Noble Metal (i.e., Ru, Rh, Pd, Os, Ir, Pt, Ag, Or Au) Or Compound Containing Patents (Class 204/290.14)
  • Patent number: 10107776
    Abstract: This disclosure relates to a nanoporous composition including a number of clusters of nanoparticles dispersed in a liquid, a nanoporous layer formed of the nanoporous composition, a glucose-oxidation electrode including the nanoporous layer, and a glucose-sensing device and system including the glucose-oxidation electrode. This disclosure also relates to a method of making the nanoporous composition, the nanoporous layer, the glucose-oxidation electrode and the glucose-sensing device and system. Further, this disclosure also relates to devices, systems and methods for continuous glucose monitoring (CGM) and blood glucose monitoring (BGM).
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: October 23, 2018
    Assignee: UXN Co., Ltd.
    Inventors: Hankil Boo, Joungmin Lee, Rae Kyu Chang
  • Patent number: 9958350
    Abstract: A pressure-measuring cell having a ceramic measuring membrane and a ceramic counter body, wherein the measuring membrane is joined to the counter body in such a way that a pressure chamber is formed between the measuring membrane and the counter body. The pressure-measuring cell also has a capacitive transducer for detecting a pressure-dependent deformation of the measuring membrane, which capacitive transducer has at least one membrane electrode arranged on the measuring membrane and at least one electrode on the counter body side, wherein according to the invention at least one membrane electrode comprises a titanium oxide.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: May 1, 2018
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Nils Ponath, Andreas Rossberg
  • Patent number: 9133556
    Abstract: The present invention aims to provide an activated cathode enabling a long-time stable operation with hydrogen overvoltage maintained at a low value, keeping a high remaining rate of the catalyst element after a cease of operation for a short-circuiting and after an electrolysis operation at a high current density, restricting catalyst loss to a little, and having a strong resistance to contamination caused by electrolyte impurity elements. The present invention relates to a cathode for hydrogen evolution with a catalyst layer formed on the cathode substrate, having, at least, three elements comprising platinum, cerium and palladium, as essential element, in a state of metal, metal oxide, or hydroxide, contained, where the mole fraction of respective element being x, y, and z, within a range of 5 mol %?x?90 mol %, 5 mol %?y?55 mol %, 5 mol %?z?65 mol %.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: September 15, 2015
    Assignee: PERMELEC ELECTRODE LTD.
    Inventors: Miwako Nara, Eri Miyakawa, Yoshinori Nishiki
  • Publication number: 20150114834
    Abstract: An electrode for electrochemical reduction of carbon dioxide and water forming carbon monoxide and hydrogen. The electrode includes a metal substrate. A self-assembled monolayer is bonded to the metal substrate. A selectivity of reaction products of carbon monoxide and hydrogen produced by the electrode is regulated relative to a bare metal substrate.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Hongfei Jia, Kenneth James McDonald
  • Publication number: 20150096900
    Abstract: 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: Application
    Filed: April 26, 2013
    Publication date: April 9, 2015
    Inventors: Robert Schulz, Sylvio Savoie
  • Publication number: 20150090601
    Abstract: The cathodized gold nanoparticle graphite pencil electrode is a sensitive enzymeless electrochemical glucose sensor based on the cathodization of AuNP-GPE. Cyclic voltammetry shows that advantageously, the cathodized AuNP-GPE is able to oxidize glucose partially at low potential (around ?0.27 V). Fructose and sucrose cannot be oxidized at <0.1 V, thus the glucose oxidation peak at around ?0.27 V is suitable enough for selective detection of glucose in the presence of fructose and sucrose. However, the glucose oxidation peak current at around ?0.27 V is much lower which should be enhanced to obtain low detection limit. The AuNP-GPE cathodization increases the oxidation peak current of glucose at around ?0.27 V. The dynamic range of the sensor is in the range between 0.05 to 5.0 mM of glucose with good linearity (R2=0.999). Almost no interference effect was observed for sensing of glucose in the presence of fructose, sucrose and NaCl.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 2, 2015
    Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: ABDEL-NASSER METWALLY ALY KAWDE, MD. ABDUL AZIZ
  • Publication number: 20150075978
    Abstract: The present invention aims to provide a high-load durable anode for oxygen generation and a manufacturing method for the same used for industrial electrolyses including manufacturing of electrolytic metal foils such as electrolytic copper foil, aluminum liquid contact and continuously electrogalvanized steel plate, and metal extraction, having superior durability under high-load electrolysis conditions.
    Type: Application
    Filed: December 14, 2012
    Publication date: March 19, 2015
    Inventors: Yi Cao, Akihiro Kato, Kazuhiro Hitao, Takashi Furusawa
  • Publication number: 20150053574
    Abstract: An electrowinning system is provided that is capable of suppressing accumulation of a side reaction product on an anode and a rise of an electrolysis voltage caused thereby, and an electrowinning method is provided 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: Application
    Filed: September 3, 2014
    Publication date: February 26, 2015
    Inventor: Masatsugu MORIMITSU
  • Publication number: 20150007371
    Abstract: A device is presented having reversibly changeable and optically readable optical properties. The device comprises a substrate having an electrically conductive surface and carrying a redox-active layer structure. The redox-active layer structure may be a monolayer or a multi-layer structure and is configured to have at least one predetermined electronic property including at least one of electrodensity and oxidation state. The electronic property of the layer structure defines an optical property of the structure thereby determining an optical response of the structure to certain incident light. This at least one electronic property is changeable by subjecting the redox-active layer structure to an electric field or to a redox-active material. The device thus enables effecting a change in said electronic property that results in a detectable change in the optical response of the layer structure.
    Type: Application
    Filed: September 17, 2014
    Publication date: January 1, 2015
    Inventors: Milko E. VAN DER BOOM, Atindra D. SHUKLA, David ROSENBLATT, Tarkeshwar GUPTA
  • Publication number: 20140374249
    Abstract: The present invention aims to provide an anode for oxygen generation and a manufacturing method for the same used for industrial electrolyses including manufacturing of electrolytic metal foils such as electrolytic copper foil, aluminum liquid contact and continuously electrogalvanized steel plate, and metal extraction. The present invention features an anode for oxygen generation and a manufacturing method for the same comprising a conductive metal substrate and a catalyst layer containing iridium oxide formed on the conductive metal substrate wherein the coating is baked in a high temperature region of 410° C.-450° C. in an oxidation atmosphere to form the catalyst layer co-existing amorphous and crystalline iridium oxide and the catalyst layer co-existing the amorphous and crystalline iridium oxide is post-baked in a further high temperature region of 520° C.-560° C. in an oxidation atmosphere to crystallize almost all amount of iridium oxide in the catalyst layer.
    Type: Application
    Filed: December 25, 2012
    Publication date: December 25, 2014
    Inventors: Yi Cao, Akihiro Kato, Kazuhiro Hirao, Takashi Furusawa
  • Publication number: 20140353147
    Abstract: 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: Application
    Filed: August 15, 2014
    Publication date: December 4, 2014
    Inventors: David Hillabrand, Theodore Knapp
  • Publication number: 20140353168
    Abstract: 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: Application
    Filed: February 7, 2013
    Publication date: December 4, 2014
    Inventor: Mariachiara Benedetto
  • Publication number: 20140353148
    Abstract: The present invention aims to provide an anode for oxygen generation and a manufacturing method for the same used for industrial electrolyses including manufacturing of electrolytic metal foils such as electrolytic copper foil, aluminum liquid contact and continuously electrogalvanized steel plate, and metal extraction. The present invention features an anode for oxygen generation and a manufacturing method for the same comprising a conductive metal substrate and a catalyst layer containing iridium oxide formed on the conductive metal substrate wherein the coating is baked in a low temperature region of 370° C.-400° C. in an oxidation atmosphere to form the catalyst layer containing amorphous iridium oxide and the catalyst layer containing amorphous iridium oxide is post-baked in a further high temperature region of 520° C.-600° C. in an oxidation atmosphere to crystallize almost all amount of iridium oxide in the catalyst layer.
    Type: Application
    Filed: December 25, 2012
    Publication date: December 4, 2014
    Inventors: Yi Cao, Akihiro Kato, Kazuhiro Hirao, Takashi Furusawa
  • Publication number: 20140332374
    Abstract: Disclosed herein are methods of treating a semiconductor surface by nitridation and deposition of a ruthenium alloy. Also disclosed are semiconductors treated with these methods, their incorporation into photoelectrochemical cells, and their use in photoelectrochemical water splitting.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 13, 2014
    Applicant: Alliance for Sustainable Energy, LLC
    Inventors: Todd DEUTSCH, John TURNER, Jennifer LEISCH, Heli WANG, Adam WELCH, Avery LINDEMAN, Kevin O'NEILL, Andrew PINKARD, Arrelaine DAMERON, Clemens HESKE, Kyle GEORGE, Lothar WEINHARDT, Michael WEIR
  • Publication number: 20140318980
    Abstract: The present invention discloses the use of a metal nanoparticle which comprises at least one semiconductor attached to it, wherein the at least one semiconductor is an atomic quantum cluster (AQC) consisting of between 2 and 55 zero-valent transition metal atoms, as photocatalysts in photocatalytic processes and applications thereof.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 30, 2014
    Inventors: Manuel Arturo Lopez Quintela, Jose Rivas Rey
  • Publication number: 20140311915
    Abstract: 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: Application
    Filed: June 22, 2012
    Publication date: October 23, 2014
    Applicant: INDUSTRIE DE NORA S.p.A.
    Inventors: Fabio Timpano, Alice Calderara
  • Publication number: 20140261646
    Abstract: An electrode for solar conversion including a porous structure configured to contain therein at least one of a catalyst, a chromophore, and a redox couple. The porous structure has a set of electrically conductive nanoparticles adjoining each other. The set of electrically conductive nanoparticles forms a meandering electrical path connecting the nanoparticles together. The porous structure has an atomic layer by layer deposited semiconductive coating disposed conformally on the electrically conductive nanoparticles to form an exterior surface for reception of charge carriers.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 18, 2014
    Applicants: RESEARCH TRIANGLE INSTITUTE, DUKE UNIVERSITY, NORTH CAROLINA STATE UNIVERSITY, UNIVERSITY OF NORTH CAROLINA CHAPEL HILL
    Inventors: Paul G. HOERTZ, Qing PENG, Berc KALANYAN, Do Han KIM, Leila ALIBABAEI, Jie LlU, Thomas J. MEYER, Gregory N. PARSON, Jeffrey T. GLASS, Mark LOSEGO
  • Patent number: 8834688
    Abstract: An alkaline production system comprising an electrochemical unit comprising a hydrogen-oxidizing anode, a cathode compartment comprising a cathode and a hydrogen delivery system configured to deliver hydrogen gas to the anode, wherein the system configured to sequester carbon dioxide with the cathode electrolyte; and methods thereof. In another embodiment, a system comprising a hydrogen-oxidizing anode in communication with a cathode electrolyte comprising bicarbonate ion; and an hydrogen delivery system configured to deliver hydrogen gas to the anode; and methods thereof.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: September 16, 2014
    Assignee: Calera Corporation
    Inventors: Ryan J. Gilliam, Valentin Decker, Bryan Boggs, Nikhil Jalani, Thomas A. Albrecht, Matt Smith
  • Publication number: 20140224666
    Abstract: Electrocatalyst, electrode coating and an electrode for preparing chlorine and process for producing the electrode, the electrocatalyst comprising a noble metal oxide and/or a noble metal of transition groups VIIIa of the Periodic Table of the Elements and at least one finely divided pulverulent oxide of another metal, in which one or more components are doped and the base metal oxide powder is chemically stable in the presence of aqueous electrolytes.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 14, 2014
    Inventors: Jürgen KINTRUP, Andreas BULAN, Elin HAMMARBERG, Stefan SEPEUR, Gerald FRENZER, Frank GROß, Stefanie EIDEN
  • Publication number: 20140224667
    Abstract: 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: Application
    Filed: February 7, 2014
    Publication date: August 14, 2014
    Applicants: NANO-X-GMBH, BAYER MATERIALSCIENCE AG
    Inventors: Jürgen KINTRUP, Andreas BULAN, Elin HAMMARBERG, Stefan SEPEUR, Gerald FRENZER, Frank GROß
  • Publication number: 20140196180
    Abstract: A device is presented having reversibly changeable and optically readable optical properties. The device comprises a substrate having an electrically conductive surface and carrying a redox-active layer structure. The redox-active layer structure may be a monolayer or a multi-layer structure and is configured to have at least one predetermined electronic property including at least one of electrodensity and oxidation state. The electronic property of the layer structure defines an optical property of the structure thereby determining an optical response of the structure to certain incident light. This at least one electronic property is changeable by subjecting the redox-active layer structure to an electric field or to a redox-active material. The device thus enables effecting a change in said electronic property that results in a detectable change in the optical response of the layer structure.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 10, 2014
    Applicant: YEDA RESEARCH & DEVELOPMENT COMPANY LTD.
    Inventors: Milko E. VAN DER BOOM, Atindra D. Shukla, David Rosenblatt, Tarkeshwar Gupta
  • Publication number: 20140158526
    Abstract: A cathode catalyst used for conversion of a carbon dioxide gas by an electrochemical reduction includes at least one first catalyst layer and at least one second catalyst layer disposed on a surface of the at least one first catalyst layer. The at least one second catalyst layer is a porous structure. The at least one first catalyst layer and the at least one second catalyst layer are physically combined with each other, and materials of the at least one first catalyst layer and the at least one second catalyst layer are different. A cathode material and a reactor include the cathode catalyst are also provided.
    Type: Application
    Filed: March 11, 2013
    Publication date: June 12, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: JIAN-WEI GUO, CHEN-CHEN ZHAO, XIANG-MING HE, LI WANG, JIAN-JUN LI, JIAN GAO
  • Patent number: 8685594
    Abstract: A cathode catalyst for a fuel cell includes a carrier, and an active material including M selected from the group consisting of Ru, Pt, Rh, and combinations thereof, and Ch selected from the group consisting of S, Se, Te, and combinations thereof, with the proviso that the active material is not RuSe when the carrier is C.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: April 1, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Alexey AlexandrovichSerov, Chan Kwak, Myoung-Ki Min, Si-Hyun Lee
  • Publication number: 20140076734
    Abstract: An efficient and low environmental impact method is disclosed for the recovery of lithium from aqueous solution, for example, brines from high altitude salt lakes. The method comprises the use of an electrochemical reactor with electrodes which are highly selective for lithium, where lithium ions are inserted in the crystal structure of manganese oxide in the cathode, and extracted from the crystal structure of manganese oxide in the anode. Also disclosed are three-dimensional carbon electrodes embedded in manganese oxides formed by impregnating a porous support, for example a carbon felt, with a manganese oxide/carbon black slurry.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 20, 2014
    Inventors: Ernesto Julio CALVO, Florencia MARCHINI
  • Publication number: 20140008215
    Abstract: The invention relates to an electrode for electrolytic processes, particularly to a cathode suitable for hydrogen evolution in an industrial electrolysis process comprising a metal substrate coated with an external catalytic layer containing crystalline ruthenium oxide having a highly ordered rutile-type structure with Ru Ru and Ru O bond length characterised by a Debye-Waller factor lower than a critical value. The catalytic outer layer may contain rare earth oxides, such as praseodymium. The electrode may also comprise an internal catalytic thin layer platinum-based, which gives an enhanced protection against accidental current reversal events.
    Type: Application
    Filed: May 3, 2012
    Publication date: January 9, 2014
    Applicant: INDUSTRIE DE NORA S.P.A.
    Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
  • Patent number: 8580091
    Abstract: 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: Grant
    Filed: May 27, 2011
    Date of Patent: November 12, 2013
    Assignee: Water Star, Inc.
    Inventors: Marilyn J. Niksa, Andrew J. Niksa
  • Patent number: 8562795
    Abstract: A nanoscale lithographic method in which a reusable conductive mask, having a pattern of conductive surfaces and insulating surfaces, is positioned upon a substrate whose surface contains an electrically responsive resist layer over a buried conductive layer. When an electric field is applied between the conductive mask and buried conductive layer, the resist layer is altered in portions adjacent the conductive areas of the mask. Selective processing is performed on the surface of the substrate, after mask removal, to remove portions of the resist layer according to the pattern transferred from the mask. The substrate may be a target substrate, or the substrate may be utilized for a lithographic masking step of another substrate. In one aspect of the invention the electrodes to which the charge is applied are divided, such as into a plurality of rows and columns wherein any desired pattern may be created without the need to fabricate specific masks.
    Type: Grant
    Filed: October 12, 2008
    Date of Patent: October 22, 2013
    Assignee: The Regents of the University of California
    Inventor: Yong Chen
  • Publication number: 20130264198
    Abstract: The present disclosure relates to methods for producing nanoparticles. The nanoparticles may be made using ethanol as the solvent and the reductant to fabricate noble-metal nanoparticles with a narrow particle size distributions, and to coat a thin metal shell on other metal cores. With or without carbon supports, particle size is controlled by fine-tuning the reduction power of ethanol, by adjusting the temperature, and by adding an alkaline solution during syntheses. The thickness of the added or coated metal shell can be varied easily from sub-monolayer to multiple layers in a seed-mediated growth process. The entire synthesis of designed core-shell catalysts can be completed using metal salts as the precursors with more than 98% yield; and, substantially no cleaning processes are necessary apart from simple rinsing. Accordingly, this method is considered to be a “green” chemistry method.
    Type: Application
    Filed: April 10, 2013
    Publication date: October 10, 2013
    Applicant: Brookhaven Science Associates, LLC
    Inventor: Jia Xu Wang
  • Patent number: 8540858
    Abstract: An interdigitated microelectrode (2) comprising a substrate (4), a first layer (6) of a first metal on the substrate (4), and a second layer (8) of a second metal on the substrate (4), the first layer (6) comprising a plurality of line microelectrodes (10) which are connected at a first end (12) and are not connected at a second end (14), the second layer (8) comprising a plurality of line microelectrodes (16) which are connected at a first end (18) and are not connected at a second end (20), the line microelectrodes (10) of the first layer (6) and the line microelectrodes (16) of the second layer (8) being such that they extend into each other but do not touch each other thereby to form an interdigititated microelectrode array (22), and the first metal being different from the second metal. A process for producing the interdigitated microelectrode (2) is also disclosed.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: September 24, 2013
    Assignee: Intellitect Water Limited
    Inventor: David Robert Vincent
  • Patent number: 8486238
    Abstract: Disclosed herein is a surface renewable iridium oxide-glass or ceramic composite hydrogen ion electrode and, more particularly, a surface renewable iridium oxide-glass or ceramic composite hydrogen ion electrode, which has a long life due to its excellent physical strength, pH dependency approximate to a theoretical value (59 mV/pH unit), and high surface renewability, and a method of manufacturing the same. The iridium oxide composite hydrogen ion electrode according to the present invention is effective in that, when the electrode is contaminated or inactivated, the surface of the electrode can be regenerated through a simple grinding process because the electrode has high surface renewability, unlike conventional electrodes.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 16, 2013
    Assignee: Konkuk University Industrial Cooperation Corp.
    Inventors: Jong Man Park, Ji Young Kim
  • Publication number: 20130175165
    Abstract: An electrolytic electrode includes an electrode surface layer formed by a high-temperature heat treatment under a low oxygen partial pressure of 100 Pa or less and includes a valve metal oxide film, the electrode surface layer having, just beneath, a layer which includes a valve metal and a noble metal excluding silver and the noble metal is precipitated and dispersed in a crystal grain boundary of the valve metal, wherein a crystal of the valve metal in a range of down to 30 ?m in a vertical depth direction from the electrode surface is a crystal grain being elongated in a vertical cross-section from the electrode surface and a content of the noble metal in a range of down to 10 ?m in the vertical depth direction from the electrode surface is 5 at % or less.
    Type: Application
    Filed: September 14, 2011
    Publication date: July 11, 2013
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Tsuyoshi Okazaki, Nobuyasu Ezawa
  • Patent number: 8480863
    Abstract: The invention relates to an electrode for electrolytic applications, optionally an oxygen-evolving anode, obtained on a titanium substrate and having a highly compact dual barrier layer comprising titanium and tantalum oxides and a catalytic layer. A method for forming the dual barrier layer comprises the thermal decomposition of a precursor solution applied to the substrate optionally followed by a quenching step and a lengthy thermal treatment at elevated temperature.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 9, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventors: Andrea Francesco Gullá, Sobha Abraham
  • Patent number: 8449739
    Abstract: A method of coating a carbon article with a metal by reductively electropolymerizing the metal via cyclic voltammetry on the carbon article, thereby forming a metal coating on the carbon article and the polymerized metal-coated carbon article made by the method. A polymerized metal-coated carbon article having a carbon article and a metal coating disposed on an exterior surface of the carbon article, the coating being present in an amount less than about 0.1 mg/cm2. A method of using a fuel cell by forming a fuel cell with a polymerized metal-coated carbon article as a working electrode and reducing oxygen, thereby providing power to a vehicle. A fuel cell including a polymerized metal-coated carbon article as a working electrode.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: May 28, 2013
    Assignee: Northern Illinois University
    Inventors: Rathindra N. Bose, Anima B. Bose
  • Patent number: 8440060
    Abstract: 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: Grant
    Filed: July 29, 2008
    Date of Patent: May 14, 2013
    Assignee: Second Sight Medical Products, Inc.
    Inventor: Dao Min Zhou
  • Publication number: 20130078536
    Abstract: A gas diffusion electrode is described, especially for use in chloralkali electrolysis, said gas diffusion electrode having finely divided components on the liquid side. The electrode is notable for a low perviosity to gases and a lower operating voltage.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 28, 2013
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Andreas Bulan, Jürgen Kintrup, Norbert Schmitz, Alexander Karpenko, Jens Aßmann
  • Patent number: 8366889
    Abstract: Subject The present invention aims to provide an anode for electrolysis by an ion exchange membrane process and the manufacturing method thereof which can show a lower concentration of by-product oxygen gas in chlorine gas and a lower overvoltage stably for a long time, compared with conventional anodes.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: February 5, 2013
    Assignee: Permelec Electrode Ltd.
    Inventor: Toshikazu Hayashida
  • Patent number: 8343329
    Abstract: The present invention provides an electrode for hydrogen generation of which the hydrogen overvoltage is sufficiently low and which is not affected by poisoning due to iron ions, and furthermore, of which the durability is superior because during operations and stop-and-start control, the hydrogen overvoltage does not rise and exfoliation of the supported material does not occur. The present invention also provides a method for manufacturing the aforementioned hydrogen generation electrode and an electrolysis method using the electrode for hydrogen generation as a cathode. An electrode for hydrogen generation is used in which a platinum alloy including platinum and one metal selected from the group consisting of nickel, cobalt, copper, silver, and iron, or an amorphous material of a transition metal element and platinum is supported on a conductive base material.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: January 1, 2013
    Assignee: Tosoh Corporation
    Inventors: Yoshinori Shirakura, Akinori Shimono
  • Patent number: 8338323
    Abstract: The present invention provides a process for producing an electrode for electrochemical reaction, wherein a conductive diamond layer is formed on an electrode substrate in the electrode; and the electrode substrate on which the conductive diamond layer is formed is kept at a temperature of 400° C. or more and 1,000° C. or less in a water vapor, thereby forming a micropore in the conductive diamond layer. Also, the present invention provides an electrode for electrochemical reaction obtained by the foregoing production process.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: December 25, 2012
    Assignees: Permelec Electrode Ltd., Shinshu University
    Inventors: Yoshio Takasu, Wataru Sugimoto, Tatsuya Ohashi, Junfeng Zhang
  • Publication number: 20120312683
    Abstract: An electrode suitable for use as hydrogen-evolving cathode in electrolytic processes is obtained by thermal decomposition of a precursor consisting of an acetic solution of nitrates of ruthenium, and optionally of rare earths. The electrode displays a low cathodic hydrogen evolution overpotential, an improved tolerance to current reversal phenomena and a high duration in industrial operating conditions.
    Type: Application
    Filed: August 21, 2012
    Publication date: December 13, 2012
    Applicant: Industrie De Nora S.p.A.
    Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
  • Publication number: 20120305389
    Abstract: The present invention aims to provide an activated cathode enabling a long-time stable operation with hydrogen overvoltage maintained at a low value, keeping a high remaining rate of the catalyst element after a cease of operation for a short-circuiting and after an electrolysis operation at a high current density, restricting catalyst loss to a little, and having a strong resistance to contamination caused by electrolyte impurity elements. The present invention relates to a cathode for hydrogen evolution with a catalyst layer formed on the cathode substrate, having, at least, three elements comprising platinum, cerium and palladium, as essential element, in a state of metal, metal oxide, or hydroxide, contained, where the mole fraction of respective element being x, y, and z, within a range of 5 mol %?x?90 mol %, 5 mol %?y?55 mol %, 5 mol %?z?65 mol %.
    Type: Application
    Filed: January 18, 2011
    Publication date: December 6, 2012
    Applicant: PERMELEC ELECTRODE LTD.
    Inventors: Miwako Nara, Eri Miyakawa, Yoshinori Nishiki
  • Patent number: 8313623
    Abstract: A cathode for electrolytic processes, particularly suitable for hydrogen evolution in chlor-alkali electrolysis comprises a metal substrate provided with a catalytic coating made of two layers containing palladium, rare earths (such as praseodymium) and a noble component selected between platinum and ruthenium. The rare earth percent amount by weight is lower in the outer layer than in the inner layer.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: November 20, 2012
    Assignee: Industrie de Nora S.p.A.
    Inventors: Antonio Lorenzo Antozzi, Alice Calderara, Marianna Brichese
  • Patent number: 8313624
    Abstract: An inert anode material for use in electrolytic processes comprises calcium ruthenate. [Note that the nominal formula for this compound is CaRuO3, although different stoichiometries may apply in practice].
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: November 20, 2012
    Assignee: Green Metals Limited
    Inventors: Derek John Fray, Gregory Russlan Doughty
  • Publication number: 20120279853
    Abstract: The present invention provides a cathode that has a conductive substrate and a catalyst layer formed on the conductive substrate. The catalyst layer comprises a first layer and a second layer. The first layer at least includes palladium element and platinum element. The second layer at least includes iridium element and platinum element. The first layer is located on the conductive substrate, and the second layer is located on the first layer. The cathode is useful because it has a low hydrogen overvoltage and degradation and peel-off of the catalysis layer is reduced against reverse current generated when electrolysis is stopped.
    Type: Application
    Filed: December 24, 2010
    Publication date: November 8, 2012
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Akiyasu Funakawa, Toshinori Hachiya
  • Publication number: 20120247971
    Abstract: 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: Application
    Filed: November 22, 2010
    Publication date: October 4, 2012
    Inventor: Masatsugu Morimitsu
  • Publication number: 20120205240
    Abstract: A process is described for the production of graphite electrodes coated predominantly with noble metal for electrolytic processes, especially for the electrolysis of hydrochloric acid, wherein the surface of a graphite electrode is coated with an aqueous solution of a noble metal compound and then tempered at 150 to 650° C. in the presence of reducing and/or extensively oxygen-free gases.
    Type: Application
    Filed: April 24, 2012
    Publication date: August 16, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Rainer Weber, Jürgen Kintrup, Matthias Weis, Odo Muddemann, Gerhard Moormann, Frank Rauscher
  • Publication number: 20120199473
    Abstract: A cathode for electrolytic processes, particularly suitable for hydrogen evolution in chlor-alkali electrolysis comprises a metal substrate provided with a catalytic coating made of two layers containing palladium, rare earths (such as praseodymium) and a noble component selected between platinum and ruthenium. The rare earth percent amount by weight is lower in the outer layer than in the inner layer.
    Type: Application
    Filed: April 5, 2012
    Publication date: August 9, 2012
    Applicant: Industrie De Nora S.p.A.
    Inventors: Antonio Lorenzo Antozzi, Marianna Brichese, Alice Calderara
  • Patent number: 8221599
    Abstract: Embodiments of the present disclosure include an anode, devices and systems including the anode (e.g., electrochemical devices and photo-electrochemical devices), methods of using the anode, methods of producing H2 and O2 from H2O, Cl2, oxidixed organic feedstocks, oxidation for the detection and quantification of chemical species, and the like.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: July 17, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Christopher E. D. Chidsey, Paul C. McIntyre
  • Patent number: 8221598
    Abstract: A system for plating according to one embodiment includes a plating cell containing plating solution; an anode in contact with the plating solution; a cathode in contact with the plating solution; and a hydrogen electrode in contact with the plating solution.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: July 17, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Wolfgang Diel, Richard M. Peekema, Murali Ramasubramanian
  • Publication number: 20120175270
    Abstract: The invention relates to a cathode for electrolytic processes provided with a catalytic coating based on ruthenium crystallites with highly controlled size falling in a range of 1-10 nm. The coating can be produced by physical vapour deposition of a ruthenium or ruthenium oxide layer.
    Type: Application
    Filed: March 22, 2012
    Publication date: July 12, 2012
    Applicant: Industrie De Nora S.p.A.
    Inventors: Christian Urgeghe, Stefania Mora, Antonio Lorenzo Antozzi
  • Patent number: 8187433
    Abstract: A sensing element adapted to, at least in part, be inserted into a mammalian body. The sensing element is made up of a core of a structurally robust metal and a plated portion made of an electrochemically active metal conjoined to at least a portion of the core. This sensing element may be used as part of a method for the continuous or intermittent monitoring of an analyte within a mammalian body. The method includes inserting at least a portion of the sensing element into the mammalian body and measuring any electric current produced by at least of portion of the sensor.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: May 29, 2012
    Assignee: iSense Corporation
    Inventors: W. Kenneth Ward, Richard G. Sass