Surface Layer Contains Electrolytically Exposed Refractory Metal Or Compound Patents (Class 204/290.13)
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Patent number: 12161385Abstract: An end effector assembly for use with an electrosurgical instrument is provided. The electrosurgical instrument includes a handle having a shaft that extends therefrom, an end effector disposed at a distal end of the shaft, at least one electrode operably coupled to the end effector and adapted to couple to a source of electrosurgical energy, a titanium nitride coating covering at least a portion of the electrode, a chromium nitride coating covering at least a portion of the electrode and/or titanium nitride coating, and a hexamethyldisiloxane plasma coating covering at least a portion of the chromium nitride coating.Type: GrantFiled: March 16, 2022Date of Patent: December 10, 2024Assignee: Covidien LPInventors: Joe D. Sartor, William E. Robinson, Todd W. Boucher
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Patent number: 12027728Abstract: A method of making an interconnect for an electrochemical cell stack includes providing the interconnect, and creep flattening the interconnect prior to placing the interconnect into the electrochemical cell stack.Type: GrantFiled: November 9, 2022Date of Patent: July 2, 2024Assignee: BLOOM ENERGY CORPORATIONInventors: Michael Gasda, Sachin Parhar, Cheng-Yu Lin, Victor Fung, Amit Nawathe, Brian Therault, Manoj Pillai
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Patent number: 11746427Abstract: An electrolyzer stack is configured for high-speed manufacturing and assembly of a plurality of scalable electrolysis cells. Each cell comprises a plurality of water windows configured to maintain a pressure loss, temperature rise and/or oxygen outlet volume fraction below predetermined thresholds. Repeating components of the cells are configured based on a desired roll web width for production and a stack compression system is configured to enable a variable quantity and variable area of said repeating cells in a single stack. A high-speed manufacturing system is configured to produce scalable cells and assemble scalable stacks at rates in excess of 1,000 MW-class stacks per year.Type: GrantFiled: February 22, 2022Date of Patent: September 5, 2023Assignee: EVOLOH, INC.Inventor: Scott Blanchet
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Patent number: 11414771Abstract: Nickel electrodes having high mechanical stability and advantageous electrochemical properties, in particular, enhanced gas evolution in water electrolysis, are described. These electrodes comprising electrically conductive nickel wire mesh or a lattice-like nickel expanded metal webs, and a layer of mutually adherent nanoporous nickel particles applied only to either the nickel mesh wires or the nickel expanded metal webs, obtainable by partially reducing the spherical nickel hydroxide particles in a reducing atmosphere between 270 to 330° C. to obtain partially reduced, spherical Ni/NiO particles, producing a paste from the Ni/NiO particles, an organic and/or inorganic binder, a surfactant and, optionally, additional adjuvants, applying the paste as a coating to the electrically conductive nickel mesh or nickel expanded metal, and annealing the coated nickel mesh or nickel expanded metal in a reducing atmosphere at 500 to 800° C. A method for manufacturing the nickel electrode is also described.Type: GrantFiled: May 9, 2018Date of Patent: August 16, 2022Assignee: ZENTRUM FÜR SONNENENERGIE- UND WASSERSTOFF-FORSCHUNG BADEN-WÜR TTEMBERT GEMEINNÜTZIGE STIFTUNGInventors: Ludwig Jörissen, Jerry Bamfo Asante, Olaf Böse
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Patent number: 11085123Abstract: An anode for generating ozone by electrolysis of water, a preparation method and use thereof, an ozone generating system, and a dental scaler are provided. The anode includes a titanium substrate and a composite oxide layer attached to a surface of the titanium substrate. The composite oxide layer is made of a metal oxide. Metal elements in the metal oxide comprise tin, ruthenium, manganese, titanium, and nickel, and a molar ratio of tin, ruthenium, manganese, titanium, and nickel is (200-500):(2.5-20):1:(1.5-7):(5-15).Type: GrantFiled: December 24, 2019Date of Patent: August 10, 2021Assignee: NICEFEEL MEDICAL DEVICE TECHNOLOGY CO., LTDInventors: Qing Zhang, Xiaowen Liu, Gang Wang, Xinquan Liu, Jinfeng Li, Gang Zhou
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Patent number: 11001935Abstract: An electrode for electrochemical processes comprises a substrate of titanium or other valve metal, an intermediate protection layer based on valve metal oxides and a catalytic layer based on oxides of tin and of iridium doped with small amounts of oxides of elements selected between bismuth, antimony, tantalum and niobium. The electrode used in electrometallurgical processes, for example in the electrowinning of metals, as anode for anodic oxygen evolution presents a reduced overvoltage and a higher duration.Type: GrantFiled: June 22, 2012Date of Patent: May 11, 2021Assignee: INDUSTRIE DE NORA S.P.A.Inventors: Fabio Timpano, Alice Calderara
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Patent number: 10914012Abstract: A membrane electrode assembly includes an anode having a first catalyst layer on a first gas-liquid diffusion layer, a cathode having a second catalyst layer on a second gas-liquid diffusion layer, and an anionic exchange membrane between the first catalyst layer of the anode and the second catalyst layer of the cathode. The first catalyst layer has a chemical structure of M?aM?bN2 or M?cM?dCe, wherein M? is Ni, Co, Fe, Mn, Cr, V, Ti, Cu, or Zn, M? is Nb, Ta, or a combination thereof, 0.7?a?1.7, 0.3?b?1.3, a+b=2, 0.24?c?1.7, 0.3?d?1.76, and 0.38?e?3.61, wherein M?aM?bN2 is a cubic crystal system and M?cM?d Ce is a cubic crystal system or amorphous.Type: GrantFiled: November 30, 2018Date of Patent: February 9, 2021Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Kuo-Hsin Lin, Li-Duan Tsai, Yu-Ming Lin, Wen-Hsuan Chao, Chiu-Ping Huang, Pin-Hsin Yang, Hsiao-Chun Huang, Jiunn-Nan Lin
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Patent number: 10829860Abstract: Nickel electrodes comprising an electrically conductive nickel sheet and a nickel layer deposited thereon which consists of spherical, porous nickel particles which adhere to each other, made by the method of partially reducing spherical nickel hydroxide particles in a reducing atmosphere at elevated temperatures to obtain partially reduced spherical Ni/NiO particles, preparing a paste from the Ni/NiO particles obtained and an organic and/or inorganic binder as well as further excipients as required, applying the paste in a layer to one or both sides of the electrically conductive nickel sheet, and tempering the coated nickel sheet in a reducing atmosphere at elevated temperatures. Self-supporting nickel layers of spherical, porous nickel particles which adhere to each other. Producing nickel electrodes and the self-supporting nickel layer, and use thereof, particularly as an electrode for water electrolysis.Type: GrantFiled: November 17, 2016Date of Patent: November 10, 2020Assignee: ZENTRUM FÜR SONNENENERGIE-UND WASSERSTOFF-FORSCHUNG BADEN-WÜRTTEMBERG GEMEINNÜTZIGE STIFTUNGInventors: Ludwig Jörissen, Jerry Bamfo Asante, Olaf Böse
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Patent number: 10714728Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises a plurality of graphene sheets and a plurality of MoP2 nanoparticles uniformly mixed with each other.Type: GrantFiled: September 27, 2018Date of Patent: July 14, 2020Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Yu-Feng Luo, Jia-Ping Wang, Shou-Shan Fan
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Patent number: 10702857Abstract: The present invention provides a monatomic metal-doped few-layer molybdenum disulfide electrocatalytic material, a preparing method thereof, and a method for electrocatalytic nitrogen fixation. The material has a few-layer ultra-thin and irregular flake-like microstructure with a length and a width of nanometer scale. A doping metal in the monatomic metal-doped few-layer molybdenum disulfide electrocatalytic material is dispersed in a form of single atoms. When the catalyst is used in electrochemical reduction of N2, a Faradic efficiency in selective reduction of N2 into NH4+ is 18% or above, and stability of the catalyst is better.Type: GrantFiled: May 6, 2018Date of Patent: July 7, 2020Assignee: CENTRAL CHINA NORMAL UNIVERSITYInventors: Lizhi Zhang, Fengjiao Quan, Shang Chen, Falong Jia
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Publication number: 20150122639Abstract: A chemically passivated photoelectrode, having a conductive substrate, a layer of conductive oxide, preferably zinc oxide (ZnO), over the conductive substrate, and an ultrathin layer of a chemically inert semiconductor material coating the conductive oxide layer, is disclosed. The ultrathin layer of chemically inert semiconductor material, which may be less than 5 nm thick, increases the efficiency of water splitting through passivation of surface charge traps and chemical stability in harsh environments, as opposed to being photoactive. A method of manufacture and a solar cell having the photoelectrode are also disclosed.Type: ApplicationFiled: October 31, 2014Publication date: May 7, 2015Inventors: Mingzhao Liu, Chang-Yong Nam, Charles T. Black
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Publication number: 20150096896Abstract: The invention relates to an electrode suitable as anode for evolution of gaseous products comprising a metal substrate coated with at least one titanium suboxide layer having an interconnected porosity and containing catalytic noble metal oxides. The invention further relates to a method of manufacturing such electrode comprising applying a mixture of titanium suboxides and noble metal oxide-based catalyst on a valve metal substrate via cold gas spray technique.Type: ApplicationFiled: May 16, 2013Publication date: April 9, 2015Applicant: INDUSTRIE DE NORA S.P.A.Inventors: Andrea Francesco Gullà, Chiara Pezzoni, Christian Urgeghe
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Publication number: 20150096900Abstract: Disclosed is an alloy of the formula: Fe3?xAl1+xMyTzTat wherein M represents at least one catalytic specie selected from the group consisting of Ru, Ir, Pd, Pt, Rh, Os, Re and Ag; T represents at least one element selected from the group consisting of Mo, Co, Cr, V, Cu, Zn, Nb, W, Zr, Y, Mn, Cd, Si, B, C, O, N, P, F, S, CI, Na and Ti; and Ta represents tantalum. Such an alloy can be used as an electrode material for the synthesis of sodium chlorate. It can also be used as a coating for protection against corrosion.Type: ApplicationFiled: April 26, 2013Publication date: April 9, 2015Inventors: Robert Schulz, Sylvio Savoie
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Publication number: 20150083585Abstract: The present invention provides molybdenum and tungsten nanostructures, for example, nanosheets and nanoparticles, and methods of making and using same, including using such nanostructures as catalysts for hydrogen evolution reactions.Type: ApplicationFiled: October 24, 2014Publication date: March 26, 2015Applicant: Brookhaven Science Associates, LLCInventors: Kotaro Sasaki, Wei-Fu Chen, James T. Muckerman, Radoslav R. Adzic
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Patent number: 8968534Abstract: A process for oxidizing water using amorphous cobalt tungstate is disclosed. A plurality of amorphous cobalt tungstate nanoparticles are supported on an electrode and are able to catalytically interact with water molecules generating oxygen. The catalyst can be used as part of a electrochemical or photo-electrochemical cell for the generation of electrical energy.Type: GrantFiled: January 31, 2012Date of Patent: March 3, 2015Assignees: Toyota Motor Egineering & Manufacturing North America, Inc., Toyota Motor CorporationInventors: Hongfei Jia, Takeshi Sekito
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Publication number: 20150027899Abstract: Provided is an anode for electroplating which uses an aqueous solution as an electrolytic solution, and the anode which is low in potential when compared with a conventional anode, able to decrease an electrolytic voltage and an electric energy consumption rate and may also be used as an anode for electroplating various types of metals, and which is low in cost. Also provided is a method for electroplating which uses an aqueous solution as an electrolytic solution, in which the anode is low in potential and electrolytic voltage, thereby making it possible to decrease the electric energy consumption rate. The anode for electroplating of the present invention is an anode for electroplating which uses an aqueous solution as an electrolytic solution, in which a catalytic layer containing amorphous ruthenium oxide and amorphous tantalum oxide is formed on a conductive substrate.Type: ApplicationFiled: August 31, 2012Publication date: January 29, 2015Applicant: THE DOSHISHAInventor: Masatsugu Morimitsu
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Publication number: 20140353147Abstract: An electrode for use with a manufacturing apparatus to deposit a material onto a carrier body with the carrier body having a first end and a second end spaced from each other with a socket disposed at each end of the carrier body. The electrode includes a shaft having a first end and a second end. The electrode also includes a head disposed on one of the ends of the shaft for coupling with the socket. The shaft and the head have an exterior surface having a contact region adapted to contact the socket. The electrode further includes an exterior surface and an exterior coating disposed on the exterior surface outside of the contact region, the exterior coating having an electrical conductivity of at least 9×106 Siemens/meter and corrosion resistance higher than silver in a galvanic series based upon room temperature sea water as an electrolyte.Type: ApplicationFiled: August 15, 2014Publication date: December 4, 2014Inventors: David Hillabrand, Theodore Knapp
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Publication number: 20140353168Abstract: The invention relates to an electrode suitable for decreasing the chemical oxygen demand of waste-water comprising: a) a permanent component; and b) a sacrificial component arranged face-to-face and releasably attached to the permanent component and in electrical contact therewith, said permanent component consisting of a Substrate of a valve metal equipped with a catalytic coating containing noble metals or oxides thereof, said sacrificial component containing elemental iron. Further the invention relates to a method for abatement of the chemical oxygen demand in an aqueous waste containing oily compounds, glycols or waxes, optionally consisting of a foundry waste, by an electrolytic process involving anodic chlorine evolution in the presence of trivalent iron. Chlorine evolution may be carried out on the surface of an anode consisting of a catalytically activated-valve metal permanent component coupled to an iron-containing sacrificial component.Type: ApplicationFiled: February 7, 2013Publication date: December 4, 2014Inventor: Mariachiara Benedetto
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Publication number: 20140291142Abstract: A photoelectrode for a photoelectrochemical cell, a method of manufacturing the same, and a photoelectrochemical cell including the same, the photoelectrode including TiO2 nanotubes, and a TiO2 layer coated on the TiO2 nanotubes.Type: ApplicationFiled: January 17, 2014Publication date: October 2, 2014Applicant: Intellectual Discovery Co., Ltd.Inventors: Hyeong tag Jeon, Giyul Ham, Hagyoung Choi, Seokyoon Shin
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Publication number: 20140231267Abstract: The present invention concerns an electrode for oxygen evolution in electroplating plants comprising a valve metal substrate and an outer catalytic layer, the substrate consisting of a metal plate provided with slits of area ranging from 2 to 8 cm2, said slits being spaced apart by a distance of 5 to 25 cm. The invention also concerns a horizontal electrochemical cell for electro-plating processes comprising at least one of said electrodes, and an electroplating plant equipped with at least one of said cells. The invention also concerns an electroplating process comprising the step of anodically evolving oxygen on the surface of said electrode.Type: ApplicationFiled: November 23, 2012Publication date: August 21, 2014Applicant: Industrie de Nora S.P.A.Inventors: Jose Eduardo Gomes De Abreu, Takashi Oishi, Alice Calderara
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Publication number: 20140224667Abstract: A process for wet-chemical production of a catalyst coating on an electrically conductive support for electrodes for chloralkali or hydrochloric acid electrolysis with electrocatalytically active components based on noble metal oxides, in which the catalyst coating is produced by; producing a coating solution or dispersion comprising a precursor compound of a noble metal and/or a metal oxide of a noble metal, and a solvent or dispersant, with addition of one or more acids to the coating solution or dispersion, where the molar ratio of the total of the amounts of acid (in mol) present in the coating solution or dispersion to the sum of the amounts of the metals from the metal-containing components present in the coating solution or dispersion is at least 2:1; applying the coating solution or dispersion to the support; substantially freeing the layer applied of solvent or dispersant by drying; and subjecting the dried layer obtained to a thermal treatment to form the catalyst coating.Type: ApplicationFiled: February 7, 2014Publication date: August 14, 2014Applicants: NANO-X-GMBH, BAYER MATERIALSCIENCE AGInventors: Jürgen KINTRUP, Andreas BULAN, Elin HAMMARBERG, Stefan SEPEUR, Gerald FRENZER, Frank GROß
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Patent number: 8696877Abstract: The invention relates to a cathode for hydrogen evolution in electrolysis cells, for instance chlor-alkali cells or cells for producing chlorate or hypochlorite, obtained starting from a substrate of nickel or other conductive material galvanically coated with nickel co-deposited with an amorphous molybdenum oxide.Type: GrantFiled: June 2, 2011Date of Patent: April 15, 2014Assignee: Industrie de Nora S.p.A.Inventors: Nedeljko Krstajic, Vladimir Jovic, Antonio Lorenzo Antozzi
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Publication number: 20140004435Abstract: A photoelectrode (100) of the present invention includes a conductive layer (12) and a photocatalytic layer (13) provided on the conductive layer (12). The conductive layer (12) is made of a metal nitride. The photocatalytic layer (13) is made of at least one selected from the group consisting of a nitride semiconductor and an oxynitride semiconductor. When the photocatalytic layer (13) is made of a n-type semiconductor, the energy difference between the vacuum level and the Fermi level of the conductive layer (12) is smaller than the energy difference between the vacuum level and the Fermi level of the photocatalytic layer (13). When the photocatalytic layer (13) is made of a p-type semiconductor, the energy difference between the vacuum level and the Fermi level of the conductive layer (12) is larger than the energy difference between the vacuum level and the Fermi level of the photocatalytic layer (13).Type: ApplicationFiled: April 25, 2012Publication date: January 2, 2014Applicant: PANASONIC CORPORATIONInventors: Satoru Tamura, Takaiki Nomura, Takahiro Suzuki, Kenichi Tokuhiro, Noboru Taniguchi, Kazuhito Hato, Nobuhiro Miyata
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Patent number: 8580091Abstract: A composition and method of manufacture of electrodes having controlled electrochemical activity to allow the electrodes to be designed for a variety of electro-oxidation processes. The electrodes are comprised of a compact coating deposited onto a conductive substrate, the coating being formed as multiple layers of a mixture of one or more platinum group metal oxides and one or more valve metal oxides. The formation of multiple layers allows the concentrations of platinum group metal and valve metal to be varied for each layer as desired for an application. For example, an electrode structure can be manufactured for use as an anode in electroplating processes, such that the oxidation of the organic additives in the electrolyte is markedly inhibited. Another electrode can be manufactured to operate at high anodic potentials in aqueous electrolytes to generate strong oxidants, e.g., hydrogen peroxide or ozone.Type: GrantFiled: May 27, 2011Date of Patent: November 12, 2013Assignee: Water Star, Inc.Inventors: Marilyn J. Niksa, Andrew J. Niksa
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Patent number: 8440060Abstract: An electrode surface coating for manufacturing the electrode surface coating comprising a conductive substrate; and one or more surface coatings comprising one or more of the following metals titanium, niobium, tantalum, ruthenium, rhodium, iridium, palladium, or gold, or an alloy of two or more metals, or a combination of two or more alloys or metal layers thereof having an increase in the surface area of 5 times to 500 times of the corresponding surface area resulting from the basic geometric shape.Type: GrantFiled: July 29, 2008Date of Patent: May 14, 2013Assignee: Second Sight Medical Products, Inc.Inventor: Dao Min Zhou
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Publication number: 20130112548Abstract: The invention relates to an electrode for an electrochemical cell, which is either a piece of a monocrystal grown from doped titanium dioxide or which contains a multiplicity of monocrystals grown from doped titanium dioxide.Type: ApplicationFiled: November 2, 2012Publication date: May 9, 2013Applicant: PRO AQUA DIAMANTELEKTRODEN PRODUKTION GMBH & CO KGInventor: PRO AQUA DIAMANTELEKTRODEN PRODUKTI
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Publication number: 20130087450Abstract: The invention relates to an electrode for electrochemical generation of hypochlorite. The electrode comprises a valve metal substrate coated with a catalytic system consisting of two super-imposed layers of distinct composition and having a different activity towards hypochlorite anodic generation from chloride solutions. The electrode has a high duration in cathodic operation conditions, imparting self-cleaning characteristics thereto when used in combination with an equivalent one with periodic polarity reversal. Moreover, the deactivation of the electrode at the end of its life cycle occurs in two subsequent steps, allowing to schedule the substitution thereof with a significant notice period.Type: ApplicationFiled: June 17, 2011Publication date: April 11, 2013Applicant: Industrie De Nora S.p.A.Inventors: Antonio Lorenzo Antozzi, Mariachiara Benedetto, Alice Calderara, Chiara Pezzoni, Christian Urgeghe
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Patent number: 8404090Abstract: A multi-layer cathode block (30) for an electrolytic cell (10) has at least a surface layer (32) with a surface expansion index and a second layer (34) with a second expansion index. The surface layer (32) includes a surface wetting agent in a first total amount. The second layer (34) includes a wetting agent in a second total amount. The surface layer (32) is directly superposed to the second layer (34). The second wetting agent in the second layer (34) includes metal boride precursors that react together to generate a metal boride component in situ when the cathode block (30) is exposed to start-up and operation conditions of the electrolytic cell (10). The second total amount is lower than the first total amount and is selected so as to minimize the difference between the expansion indexes of the surface layer (32) and the second layer (34).Type: GrantFiled: April 30, 2009Date of Patent: March 26, 2013Assignee: Rio Tinto Alcan International LimitedInventors: Jean Camire, Jules Bergeron, Pierre-Yves Brisson, Simon Leclerc
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Publication number: 20130068613Abstract: The present invention relates to amorphous transition metal sulphides as electrocatalysts for hydrogen production from water or aqueous solutions and use thereof in electrodes and electrolysers.Type: ApplicationFiled: March 31, 2011Publication date: March 21, 2013Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Xile Hu, Daniel Merki, Heron Vrubel
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Patent number: 8357271Abstract: The present invention aims to provide a zinc electrowinning anode capable of inhibiting manganese compound deposition on the anode and a cobalt electrowinning anode capable of inhibiting cobalt oxyhydroxide deposition on the anode. The zinc electrowinning anode according to the present invention is a zinc electrowinning anode having an amorphous iridium oxide-containing catalytic layer formed on a conductive substrate, and the zinc electrowinning method according to the present invention is an electrowinning method using that electrowinning anode. Also, the cobalt electrowinning anode according to the present invention is an electrowinning anode having an amorphous iridium oxide or ruthenium oxide-containing catalytic layer formed on a conductive substrate, and the cobalt electrowinning method according to the present invention is an electrowinning method using that electrowinning anode.Type: GrantFiled: June 9, 2009Date of Patent: January 22, 2013Assignee: The DoshishaInventor: Masatsugu Morimitsu
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Publication number: 20120247971Abstract: The present invention has a problem aiming to provide an electrowinning system capable of suppressing accumulation of a side reaction product on an anode and a rise of an electrolysis voltage caused thereby, and also to provide an electrowinning method using the system. To solve this problem, the electrowinning system of the present invention applies predetermined electrolysis current between an anode and a cathode placed in an electrolyte, thereby depositing a desired metal on the cathode, in which the electrolyte is a sulfuric acid-based or chloride-based solution containing ions of the metal, and the anode has a catalytic layer, containing amorphous iridium oxide or amorphous ruthenium oxide, formed on a conductive substrate.Type: ApplicationFiled: November 22, 2010Publication date: October 4, 2012Inventor: Masatsugu Morimitsu
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Patent number: 8263290Abstract: The invention is directed to iridium oxide based catalysts for use as anode catalysts in PEM water electrolysis. The claimed composite catalyst materials comprise iridium oxide (IrO2) and optionally ruthenium oxide (RuO2) in combination with a high surface area inorganic oxide (for example TiO2, Al2O3, ZrO2 and mixtures thereof). The inorganic oxide has a BET surface area in the range of 50 to 400 m2/g, a water solubility of lower than 0.15 g/l and is present in a quantity of less than 20 wt. % based on the total weight of the catalyst. The claimed catalyst materials are characterized by a low oxygen overvoltage and long lifetime in water electrolysis. The catalysts are used in electrodes, catalyst-coated membranes and membrane-electrode-assemblies for PEM electrolyzers as well as in regenerative fuel cells (RFC), sensors, and other electrochemical devices.Type: GrantFiled: June 1, 2011Date of Patent: September 11, 2012Assignee: Umicore AG & Co. KGInventors: Marco Lopez, Andreas Schleunung, Peter Biberbach
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Patent number: 8070924Abstract: The present invention provides an electrode for generation of hydrogen comprising: a conductive substrate; a catalytic layer formed on the conductive substrate and containing at least one platinum group metal selected from the group consisting of Pt, Ir, Ru, Pd and Rh; and a hydrogen adsorption layer formed on the catalytic layer. The present invention also provides an electrode for generation of hydrogen comprising: a conductive substrate, a catalytic layer formed on the conductive substrate and containing: at least one platinum group metal selected from the group consisting of Pt, Ir, Ru, Pd and Rh and/or at least one oxide of said platinum group metals; and at least one metal selected from the group consisting of lanthanum series metals, valve metals, iron series metals and silver and/or at least one oxide of said metals; and a hydrogen adsorption layer formed on the catalytic layer.Type: GrantFiled: March 24, 2008Date of Patent: December 6, 2011Assignee: Permelec Electrode Ltd.Inventors: Takeo Ohsaka, Shunsuke Sata, Miwako Nara, Yoshinori Nishiki
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Patent number: 8022004Abstract: Various embodiments provide an electrode comprising a conductive substrate, a first layer of a mixture comprising iridium oxide in a crystalline phase and tantalum oxide in an amorphous phase on a portion of an outer surface of the conductive substrate, and a second layer of the mixture comprising iridium oxide in an amorphous phase and tantalum oxide in an amorphous phase on an outer surface of the first layer.Type: GrantFiled: April 29, 2009Date of Patent: September 20, 2011Assignee: Freeport-McMoran CorporationInventors: Scot P Sandoval, Michael D Waite, Masatsugu Morimitsu, Casey J Clayton
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Patent number: 8021799Abstract: The embodiments generally relate to a high performance ceramic anode which will increase flexibility in the types of fuels that may be used with the anode. The embodiments further relate to high-performance, direct-oxidation SOFC utilizing the anodes, providing improved electro-catalytic activity and redox stability. The SOFCs are capable of use with strategic fuels and other hydrocarbon fuels. Also provided are methods of making the high-performance anodes and solid oxide fuel cells comprising the anodes exhibiting improved electronic conductivity and electrochemical activity.Type: GrantFiled: July 12, 2007Date of Patent: September 20, 2011Assignee: The Trustees Of The University Of PennsylvaniaInventors: Raymond J. Gorte, John M. Vohs, Michael D. Gross
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Patent number: 7976989Abstract: The invention is directed to iridium oxide based catalysts for use as anode catalysts in PEM water electrolysis. The claimed composite catalyst materials comprise iridium oxide (IrO2) and optionally ruthenium oxide (RuO2) in combination with a high surface area inorganic oxide (for example TiO2, Al2O3, ZrO2 and mixtures thereof). The inorganic oxide has a BET surface area in the range of 50 to 400 m2/g, a water solubility of lower than 0.15 g/l and is present in a quantity of less than 20 wt. % based on the total weight of the catalyst. The claimed catalyst materials are characterised by a low oxygen overvoltage and long lifetime in water electrolysis. The catalysts are used in electrodes, catalyst-coated membranes and membrane-electrode-assemblies for PEM electrolyzers as well as in regenerative fuel cells (RFC), sensors, and other electrochemical devices.Type: GrantFiled: October 29, 2004Date of Patent: July 12, 2011Assignee: Umicore AG & Co. KGInventors: Marco Lopez, Andreas Schleunung, Peter Biberbach
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Patent number: 7961452Abstract: The semiconductor photoelectrode of the present invention includes a metallic substrate having irregularities in a surface and a semiconductor layer which is formed on the surface of the metallic substrate and composed of a photocatalytic material. This can increase the light absorption efficiency and, furthermore, prevent recombination of charges.Type: GrantFiled: March 29, 2006Date of Patent: June 14, 2011Assignee: Nissan Motor Co., Ltd.Inventors: Takashi Oi, Yasukazu Iwasaki, Kazuhiro Sayama
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Publication number: 20110073470Abstract: A multi-layer cathode block (30) for an electrolytic cell (10) has at least a surface layer (32) with a surface expansion index and a second layer (34) with a second expansion index. The surface layer (32) includes a surface wetting agent in a first total amount. The second layer (34) includes a wetting agent in a second total amount. The surface layer (32) is directly superposed to the second layer (34). The second wetting agent in the second layer (34) includes metal boride precursors that react together to generate a metal boride component in situ when the cathode block (30) is exposed to start-up and operation conditions of the electrolytic cell (10). The second total amount is lower than the first total amount and is selected so as to minimize the difference between the expansion indexes of the surface layer (32) and the second layer (34).Type: ApplicationFiled: April 30, 2009Publication date: March 31, 2011Applicant: RIO TINTO ALCAN INTERNATIONAL LIMITEDInventors: Jean Camiré, Jules Bergeronère, Pierre-Yves Brisson, Simon Leclerc
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Patent number: 7905993Abstract: Mixed-metal-oxide (MMO) coated precious-metal tape is installed directly on concrete surfaces using an electrically conductive adhesive, thereby obviating the need for slots, holes, cementitious grout or additional concrete. The electrically conductive adhesive is preferably formed by disposing mixed-metal-oxide (MMO) coated precious-metal particles in an adhesive layer. The tape anodes may be installed on the concrete surfaces including a shallow concrete cover or congested reinforcing steel without developing an electrical short circuit between the anode and the reinforcing steel. Overall the invention provides for quick and low cost installation on many concrete structures. Interconnections between the tape anodes and bare metal distribution elements may be made with conductive adhesive or spot welding.Type: GrantFiled: November 20, 2007Date of Patent: March 15, 2011Inventor: Miki Funahashi
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Patent number: 7811426Abstract: Disclosed is an oxygen evolution anode for evolving oxygen without chlorine evolution in electrolysis of aqueous solutions of sodium chloride having high performance and durability with decreased amount of the precious metal(s) in the intermediate layer to decrease manufacturing cost and to ease problem of the resources. The oxygen evolution anode comprises an electroconductive substrate, an intermediate layer and an electrocatalyst. The intermediate layer prepared by calcination consists of multiple oxide of the platinum group element(s), Sn and Sb, with the Sn/Sb ratio of 1-40 and with the sum of Sn and Sb of 90 cationic % or less. The electrocatalyst is prepared by anodic deposition and consists of 0.1-3 cationic % of Sn, 0.2-20 cationic % of Mo and/or W and the balance of Mn.Type: GrantFiled: October 25, 2007Date of Patent: October 12, 2010Assignees: Daiki Ataka Engineering Co., Ltd.Inventors: Koji Hashimoto, Ahmed Abd El-Moneim, Naokazu Kumagai
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Patent number: 7803260Abstract: Disclosed is an oxygen evolution electrode for formation of only oxygen without formation of chlorine at anode in the performance and the durability of the anode is so high that they are, even in strong acid, at the same level as that in neutral solution. The electrode is prepared by anodic deposition of multiple oxide consisting of Mn—Mo—Sn, Mo—W—Sn or Mn—Mo—W—Sn on an IrO2-coated titanium substrate. The multiple oxide are composed of Mn as the main component, 0.1-3 cationic % of Sn and 0.2-20 cationic % of Mo and/or W.Type: GrantFiled: October 25, 2007Date of Patent: September 28, 2010Assignees: Daiki Ataka Engineering Co., Ltd., Koji HashimotoInventors: Koji Hashimoto, Ahmed Abd El-Moneim, Naokazu Kumagai
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Publication number: 20100119920Abstract: An apparatus is provided according to embodiments of the present invention which includes a reaction chamber having a wall defining an interior of the reaction chamber and an exterior of the reaction chamber; exoelectrogenic bacteria disposed in the interior of the reaction chamber; an aqueous medium having a pH in the range of 3-9, inclusive, the aqueous medium including an organic substrate oxidizable by exoelectrogenic bacteria and the medium disposed in the interior of the reaction chamber. An inventive apparatus further includes an anode at least partially contained within the interior of the reaction chamber; and a brush or mesh cathode including stainless steel, nickel or titanium, the cathode at least partially contained within the interior of the reaction chamber.Type: ApplicationFiled: December 30, 2009Publication date: May 13, 2010Applicant: The Penn State Research FoundationInventors: Bruce Logan, Douglas Call, Matthew Merrill, Shaoan Cheng
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Publication number: 20100096260Abstract: A water chlorinator includes an aqueous chloride ion source; and a pair of dual functional electrodes configured to electrolyze the aqueous chloride ion source, each one of the pair of dual functional electrodes comprising a titanium substrate and a mixed metal oxide coating deposited thereon and consisting essentially of ruthenium oxide and titanium oxide having a molar ratio of 5:95 to 25:75, respectively.Type: ApplicationFiled: October 16, 2008Publication date: April 22, 2010Applicant: FINNCHEM USA INCInventors: Yuanwu Xie, Dennis Frederick Dong
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Publication number: 20090288958Abstract: Accordingly, in various embodiments, the present invention provides methods for making electrochemically active materials. Methods include making an electrochemically active material by reacting a platinum group metal salt in a organic solvent to yield a mixture, then heating the mixture to create a metal-organic solvent complex and an acid, followed by removing at least a portion of the acid, and yielding an electrochemically active material comprising the metal-organic solvent complex. In an exemplary embodiment, the resulting electrochemically active material may be used for coating an electrode.Type: ApplicationFiled: April 29, 2009Publication date: November 26, 2009Applicant: PHELPS DODGE CORPORATIONInventors: Scot P. Sandoval, Michael D. Waite, Casey J. Clayton
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Patent number: 7494583Abstract: An electrode having a valve metal substrate and an electrocatalytic surface composition comprising titanium dioxide doped with bismuth is provided, and an electrolytic water purification process utilizing this electrode, wherein organic substances dissolved or dispersed in water are oxidized and degraded in a nonselective manner with good current efficiency.Type: GrantFiled: June 29, 2006Date of Patent: February 24, 2009Inventor: Oleh Weres
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Publication number: 20080237036Abstract: The invention relates to a method of forming an electrocatalytic surface on an electrode in a simple way, in particular on a lead anode used in the electrolytic recovery of metals. The catalytic coating is formed by a spraying method which does not essentially alter the characteristics of the coating powder during spraying. Transition metal oxides are used as the coating material. After the spray coating the electrode is ready for use without further treatment. The invention also relates to an electrode onto which an electrocatalytic surface is formed.Type: ApplicationFiled: September 26, 2006Publication date: October 2, 2008Applicant: OUTOTEC OYJInventors: Michael Harold Barker, Olli Hyvarinen, Karri Osara
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Patent number: 7378005Abstract: An object is to provide an electrode for electrolysis which is preferable in generation of ozone water usable in cleaning and sterilizing of water and sewage, or cleaning in a semiconductor device manufacturing process by an electrolysis process, and a method of manufacturing this electrode for electrolysis. The surface of a conductive substrate constituting the electrode for electrolysis is coated with a noble metal such as platinum or a noble metal oxide to form an intermediate layer, further a surface layer is constituted of a dielectric material on the surface of the intermediate layer, and the surface layer is provided with holes.Type: GrantFiled: August 18, 2005Date of Patent: May 27, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuhiro Kaneda, Mineo Ikematsu, Yurika Koizumi, Tsuyoshi Rakuma, Daizo Takaoka
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Publication number: 20080116065Abstract: Disclosed is an oxygen evolution electrode for formation of only oxygen without formation of chlorine at anode in the performance and the durability of the anode is so high that they are, even in strong acid, at the same level as that in neutral solution. The electrode is prepared by anodic deposition of multiple oxide consisting of Mn—Mo—Sn, Mo—W—Sn or Mn—Mo—W—Sn on an IrO2-coated titanium substrate. The multiple oxide are composed of Mn as the main component, 0.1-3 cationic % of Sn and 0.2-20 cationic % of Mo and/or W.Type: ApplicationFiled: October 25, 2007Publication date: May 22, 2008Applicants: Daiki Ataka Engineering Co., Ltd., Koji HashimotoInventors: Koji Hashimoto, Ahmed Abd El-Moneim, Naokazu Kumagai
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Patent number: 7374647Abstract: A device of an electrode is disclosed, comprising a core and a surface coating of electrically-conductive material, and it is characterized by that the surface coating comprises one or several layers with a pore-free surface, each with a thickness of 0.005 mm to 0.050 mm, and formed by spraying, especially with a vacuum plasma spray technique.Type: GrantFiled: October 8, 2002Date of Patent: May 20, 2008Assignee: ORO ASInventors: Atle Mundheim, Lasse Kroknes
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Patent number: 7332065Abstract: The present invention relates to a process for manufacturing an electrode comprising depositing on an electrode substrate a binder dispersion comprising a precursor of a conductive or semiconductive oxide, forming a conductive or semiconductive oxide coating from the precursor on the electrode substrate, depositing an electroconductive titanium oxide and electrode particles on the conductive or semiconductive oxide coating, adhering the electroconductive titanium oxide and the electrode particles to the formed conductive or semiconductive oxide coating. The invention also relates to an electrode obtainable by the process, and the use thereof in an electrolytic cell.Type: GrantFiled: June 14, 2004Date of Patent: February 19, 2008Assignee: Akzo Nobel N.V.Inventor: Takayuki Shimamune