Free Carbon Containing Patents (Class 204/290.15)
  • Patent number: 8815064
    Abstract: The present invention provides an ozone generator comprising an anode and a cathode provided on each side of a fluororesin type cation exchange membrane, the anode being a conductive diamond electrode having conductive diamond on the surface, wherein water is supplied to an anode compartment, DC current is supplied between the anode and the cathode to electrolyze water to evolve ozone from the anode compartment and hydrogen from a cathode compartment, the conductive diamond electrode comprising a substrate having a plurality of convexo-concave and a conductive diamond film coated on the surface of the substrate is applied as the conductive diamond electrode, and a close packed layer of ion exchange resin particles or the fluororesin type cation exchange membrane with notch is closely adhered to the surface of the anode side of the fluororesin type cation exchange membrane.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: August 26, 2014
    Assignee: Permelec Electrode Ltd.
    Inventors: Masaaki Kato, Rie Kawaguchi, Takamichi Kishi
  • 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
  • Patent number: 8641875
    Abstract: In one embodiment of the present invention an electrolytic cell is provided comprising: a containment vessel; a first electrode; a second electrode; a source of electrical current in electrical communication with the first electrode and the second electrode; an electrolyte in fluid communication with the first electrode and the second electrode; a gas, wherein the gas is formed during electrolysis at or near the first electrode; and a separator; wherein the first electrode is configured to control the location of nucleation of the gas by substantially separating the location of electron transfer and nucleation.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: February 4, 2014
    Assignee: McAlister Technologies, LLC
    Inventor: Roy Edward McAlister
  • Publication number: 20130153411
    Abstract: The negative electrode for aqueous solution electrolysis of the present invention includes a conductive substrate having a nickel surface, a mixture layer including metal nickel, a nickel oxide and carbon atoms, formed on the conductive substrate surface, and an electrode catalyst layer formed on the mixture layer surface, wherein the electrode catalyst layer is formed by a layer including a platinum group metal or a platinum group metal compound. The negative electrode for aqueous solution electrolysis of the present invention is preferably used in electrolysis of an aqueous solution of an alkali metal halide, and the like.
    Type: Application
    Filed: February 17, 2011
    Publication date: June 20, 2013
    Inventor: Sanae Ishimaru
  • Publication number: 20130068613
    Abstract: 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: Application
    Filed: March 31, 2011
    Publication date: March 21, 2013
    Inventors: Xile Hu, Daniel Merki, Heron Vrubel
  • Patent number: 8349164
    Abstract: The present invention provides a conductive diamond electrode structure for use in electrolytic synthesis of a fluorine-containing material with a fluoride ion-containing molten salt electrolytic bath, which comprises: a conductive electrode feeder; and a conductive diamond catalyst carrier comprising a conductive substrate and a conductive diamond film carried on a surface thereof, wherein the conductive diamond catalyst carrier is detachably attached to the conductive electrode feeder at a portion to be immersed in the electrolytic bath. Also disclosed is an electrolytic synthesis of a fluorine-containing material using the conductive diamond electrode structure.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: January 8, 2013
    Assignee: Permelec Electrode Ltd.
    Inventors: Tsuneto Furuta, Setsuro Ogata, Masaharu Uno
  • 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: 20120228157
    Abstract: Nanostructures comprising carbon and metal catalyst that are formed on a substrate, such as a silicon substrate, are contacted with a composition that, among other useful modifications, protects the nano structures and renders them stable in the presence of oxidizing agents in an aqueous environment. The protected nano structures are rendered stable over an extended period of time and thereby remain useful during such period as components of an electrode, for example, for detecting electrochemical species such as free chlorine, total chlorine, or both in water.
    Type: Application
    Filed: November 11, 2010
    Publication date: September 13, 2012
    Applicant: NanoSelect, Inc.
    Inventors: Chunhong Li, Piu Francis Man, David J. Ruggieri
  • Publication number: 20120193240
    Abstract: A carbon paste electrode is modified with a chemical agent that is selective for a plurality of lanthanides and actinides (f-series) elements. The modified carbon paste electrode selectively has different voltages applied thereto where a first voltage is used to cause the deposition of one or more lanthanides or actinides from an industrial or environmental sample onto the electrode, and, subsequent to removal of the electrode from the sample and insertion into a second sample where concentration of lanthanides or actinides is preferred, a second voltage is used to cause the deposited lanthanides and/or actinides to be discharged from the electrode for concentration into the second sample.
    Type: Application
    Filed: January 20, 2012
    Publication date: August 2, 2012
    Inventors: Sue B. Clark, Paul D. Schumacher
  • Patent number: 8226806
    Abstract: The embodiments of the invention relate to an electrode for electrolysis comprising an electrode substrate and a coating of the electrode substrate with a polycrystalline diamond material, that the electrode substrate consists of a base body of carbon material and at least one contact layer of the electrode substrate carrying the coating consists of a non-metallic, electrically conductive material.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: July 24, 2012
    Assignee: Hoffmann & Co., Elektrokohle AG
    Inventors: Klaus Reiser, Conrad Reynvaan, Stefan Schneweis
  • Patent number: 8192595
    Abstract: A transition metal/carbon nanotube composite includes a carbon nanotube and a transition metal oxide coating layer disposed on the carbon nanotube. The transition metal oxide coating layer includes a nickel-cobalt oxide.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: June 5, 2012
    Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Ho-jung Yang, Hyo-rang Kang, Kwang-bum Kim, Jin-go Kim
  • Publication number: 20120085639
    Abstract: A cathode bottom for an electrolytic cell for producing aluminum, includes a material which can be disposed on at least one cathode block. The material includes a pre-compressed plate based on expanded graphite. A method for producing a cathode bottom includes providing at least one cathode block and placing a material, including at least one pre-compressed plate based on expanded graphite, on at least one surface of the at least one cathode block. The cathode bottom is used in an electrolytic cell for producing aluminum.
    Type: Application
    Filed: June 1, 2010
    Publication date: April 12, 2012
    Applicant: SGL CARBON SE
    Inventors: Oswin Oettinger, Frank Hiltmann
  • Publication number: 20120067745
    Abstract: Internally calibrated pH and other analyte sensors based on redox agents provide more accurate results when the redox active reference agent is in a constant chemical environment, yet separated from the solution being analyzed in such a way as to maintain electrical contact with the sample. Room temperature ionic liquids (RTIL) can be used to achieve these results when used as a salt bridge between the reference material and the sample being analyzed. The RTIL provides the constant chemical environment and ionic strength for the redox active material (RAM) and provides an electrolytic layer that limits or eliminates direct chemical interaction with the sample. A broad range of RAMs can be employed in a variety of configurations in such “Analyte Insensitive Electrode” devices.
    Type: Application
    Filed: March 10, 2010
    Publication date: March 22, 2012
    Applicant: Senova Systems, Inc.
    Inventors: Joseph A. Duimstra, Lee Leonard, Gregory G. Wildgoose, Eric Lee
  • Publication number: 20120037512
    Abstract: Electrodes for electrolysis of water, for encouraging growth of algae and aerobic bacteria, for removing suspended solids from wastewater during treatment, or for rendering water sterile and potable have a concrete coating over a metallic or carbon fibre core. The coating is from 2 to 50 mm thick; preferably 5 to 25 mm thick. Preferably, a DC current passed between the immersed electrodes periodically reversed but there is no visible “rusting” at the anode if the DC current is steady. The resistive nature of the concrete tends to suppress concentrations of current upon the electrode surface.
    Type: Application
    Filed: April 15, 2010
    Publication date: February 16, 2012
    Inventor: Maurice James Robertson
  • Patent number: 8105469
    Abstract: Microelectrode comprising a body formed from electrically non-conducting material and including at least one region of electrically conducting material and at least one passage extending through the body of non-conducting material and the region of conducting material, the electrically conducting region presenting an area of electrically conducting material to a fluid flowing through the passage in use. An electrochemical cell which includes such a microelectrode is also disclosed.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: January 31, 2012
    Inventors: Andrew John Whitehead, Geoffrey Alan Scarsbrook, Julie Victoria MacPherson, Mark Newton, Patrick Robert Unwin, William Joseph Yost, III
  • Publication number: 20110303554
    Abstract: An enzyme electrode that enables rapid degradation of bisphenol-A (BPA) in a contaminated sample and/or monitoring of BPA concentration in a contaminated sample. The enzyme electrode includes a working electrode having one or more selected enzymes that are capable of degrading BPA linked to the working electrode. The selected enzymes linked to the working electrode are capable of degrading BPA at an enhanced rate in response to an applied voltage. The electrode can be used to monitor BPA concentration in a contaminated sample by measuring current flow through the electrode in response to an applied voltage.
    Type: Application
    Filed: June 11, 2010
    Publication date: December 15, 2011
    Inventor: Shinobu Oguchi
  • Publication number: 20110292570
    Abstract: The invention relates to a process for coating nanoparticles with graphene, comprising the steps of (a) providing a suspension comprising a suspension medium and nanoparticles with positive surface charge, (b) adding graphene oxide particles to the suspension from step (a), the graphene oxide particles accumulating on the nanoparticles, and (c) converting the graphene oxide particles accumulated on the nanoparticles to graphene, to graphene-coated nanoparticles comprising at least one metal, a semimetal, a metal compound and/or a semimetal compound, and to the use of these graphene-coated nanoparticles in electrochemical cells and supercapacitors, and to supercapacitors and electrochemical cells comprising these nanoparticles.
    Type: Application
    Filed: May 13, 2011
    Publication date: December 1, 2011
    Applicants: Max-Planck-Gesellschaft zur Foerd. der Wisse. e. V., BASF SE
    Inventors: Sorin IVANOVICI, Shubin Yang, Xinliang Feng, Klaus Müllen
  • Publication number: 20110247929
    Abstract: A diamond electrode having an oxidation resistant diamond film which will not separate from the electrode during electrolysis with highly oxidizing materials. The thickness of the diamond film is 20 pm or more and the diamond film should preferably cover opposite side surfaces of a substrate in such a manner as to also cover end surfaces 2a of the substrate. The surfaces of the substrate are covered with a plurality of diamond layers to form the film using repeated steps of forming separate diamond layers with each diamond layer having a thickness of 10 to 30 pm on one of the surfaces of the substrate and then forming a diamond layer having a thickness of 10 to 30 pm on the other surface of the substrate. Thus, it is possible to form a nonporous surface of diamond layer and prevent deterioration of an electrode caused by the separation of a diamond film.
    Type: Application
    Filed: September 18, 2009
    Publication date: October 13, 2011
    Inventors: Tatsuo Nagai, Norihito Ikemiya, Katsuhito Yoshida, Shigeru Yoshida
  • Patent number: 7976688
    Abstract: Method for manufacturing anodes used for the production of aluminium by fused bath electrolysis, said anodes comprising an anode stem made of a conducting metal and at least one block made of carbonaceous material called an anode block, said method including at least the following steps: a) obtain an anode stem; b) obtain a new anode block; c) fix one end of the anode stem onto the anode block, so as to give good mechanical attachment and good electrical connection between said stem and said anode block; said method being characterised in that before, during or after step c), but before placement of said anode in the electrolytic cell, a protective layer with a controlled thickness, typically between 5 and 25 cm composed of a material resistant to temperature and corrosion by the medium above the electrolytic bath is at least partially deposited on the upper surface of said anode block.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: July 12, 2011
    Assignee: E.C.L.
    Inventors: Ludovic Demeulenaere, Alain Van Acker, Didier Lescarcelle
  • Publication number: 20110165458
    Abstract: Electrically conductive fibers made of carbon nanotubes that are assembled and covered by at least one deposit that includes a biopolymer, the manufacturing of these electrodes and the use of these electrodes in bioelectrochemical systems such as, for example, enzymatic or immunological biosensors, DNA, RNA, and biobatteries.
    Type: Application
    Filed: June 8, 2009
    Publication date: July 7, 2011
    Applicant: Centre National De La Recherche Scientifique (CNRS)
    Inventors: Nicolas Mano, Philippe Poulin
  • Publication number: 20110157772
    Abstract: A surface-modified nano graphene platelet (NGP), comprising: (a) a nano graphene platelet having a thickness smaller than 10 nm; and (b) discrete, non-continuous, and non-metallic bumps or nodules bonded to a surface of the graphene platelet to serve as a spacer. When multiple surface-modified NGP sheets are stacked together to form an electrode, large numbers of electrolyte-accessible pores are formed, enabling the formation of large amounts of double layer charges in a supercapacitor, which exhibits an exceptionally high specific capacitance.
    Type: Application
    Filed: December 28, 2009
    Publication date: June 30, 2011
    Inventors: Aruna Zhamu, Zenning Yu, Chen-guang Liu, Bor z. Jang
  • Publication number: 20110139629
    Abstract: An electrode material, an electrode and a process for hydrogen chloride electrolysis based on platinum metal as catalyst, in which the electrode material has a nanosize mixture of platinum particles and silver particles, is described.
    Type: Application
    Filed: August 12, 2009
    Publication date: June 16, 2011
    Applicant: Bayer Material Science AG
    Inventors: Rainer Weber, Jürgen Kintrup, Wolfgang Schuhmann, Michael Bron, Artjom Maljusch, Chikka Nagaiah Tharamani
  • Patent number: 7959773
    Abstract: An electroactivated film that includes: a first electrode that is spaced apart from a second electrode, a water insoluble electrically conductive medium which is permeable to moisture and oxygen and which contacts both electrodes, an electrocatalyst which can be reversibly oxidized and reduced and which facilitates the production of a peroxide when an electrical potential is imposed across the electrodes, and optionally a peroxide-activating catalyst which converts the peroxide to an activated peroxide, wherein one or both electrodes have electrocatalyst immobilized thereupon.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: June 14, 2011
    Assignee: Lumimove, Inc.
    Inventors: Shifeng Hou, Von Howard M. Ebron, Yevgenia V. Ulyanova, Sriram Viswanathan, Patrick J. Kinlen
  • Publication number: 20110043037
    Abstract: High surface area electrodes are described here. The electrodes comprise a conductive substrate and a mesh of nanostructures disposed on the conductive substrate. The nanostructures are coated with conductive or semiconducting nanoparticles to form a high surface area electrode. Methods for making high surface area electrodes are also provided. Further, energy storage devices incorporating the high surface area electrodes are described. Related systems incorporating energy storage devices are also disclosed.
    Type: Application
    Filed: January 22, 2009
    Publication date: February 24, 2011
    Inventors: David N. Mcilroy, Grant Norton
  • Publication number: 20110024287
    Abstract: A bipolar electrode comprises an intermediate layer comprising one or more carbon materials. The bipolar electrode further comprises first and second layers disposed on opposite surfaces of the intermediate layer and configured to act as an anode and a cathode. The first and second layers comprise at least one of one or more electrically conductive carbon materials and one or more conductive polymers. A supercapacitor desalination device and a method for making the bipolar electrode are also presented.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 3, 2011
    Inventors: Liping Zheng, Hai Yang, Wei Cai, Jianyun Liu, Zhigang Deng, Hui Liu, Lin Chen, Xianguo Yu
  • Publication number: 20110008677
    Abstract: Disclosed are an electrode and a battery comprising the electrode. The electrode comprises a nano composite comprising nano particles capable of being oxidized and reduced and a carbonaceous material covering the nano particles.
    Type: Application
    Filed: March 18, 2009
    Publication date: January 13, 2011
    Inventors: Kenji Nakane, Takeshi Hattori, Taketsugu Yamamoto
  • Publication number: 20100252425
    Abstract: A carbonaceous substrate of the present invention is such that an X-ray diffraction pattern thereof is a complex profile and includes at least two (002) diffraction lines; and the substrates contains crystallites with different interlayer spacings. Further, in the X-ray diffraction pattern, (002) diffraction lines between 2?=10° and 2?=30° have an asymmetric shape; and the X-ray diffraction pattern includes at least two pattern components which are a diffraction line whose center is at 2?=26° and a diffraction line whose center is at a lower angle than 2?=26°. Further, the carbonaceous substrate contains crystals wherein the periodic distance d002 is 0.34 nm or more and the crystallite size Lc002 is 20 nm or less based on the X-ray diffraction lines. An electrodes for fluorine electrolysis of the present invention includes the carbonaceous substrate on which a conductive diamond thin film is formed.
    Type: Application
    Filed: September 19, 2008
    Publication date: October 7, 2010
    Applicant: Toyo Tanso Co., Ltd.
    Inventors: Rie Tao, Takanori Kawano, Yoshio Shodai
  • Publication number: 20100193371
    Abstract: The present invention provides an electrode for electrolysis, wherein the electrode comprises: a substrate comprising an electrically conductive material, wherein the surface of the substrate is made of glassy carbon; and an electrically conductive diamond film with which at least part of the substrate is coated.
    Type: Application
    Filed: February 1, 2010
    Publication date: August 5, 2010
    Inventors: Akimasa TASAKA, Masaharu UNO, Yoshinori NISHIKI, Tsuneto FURUTA
  • Publication number: 20100173228
    Abstract: The present invention relates to nanostructured composites comprising a nanotube network which is at least partially embedded within a carbon layer. The present invention particularly relates to conducting nanostructured composites for use in the fields of energy conversion, energy storage and also the biomedical field. The present invention also relates to a process via CVD of carbon onto a catalyst layer on a substrate. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: December 14, 2007
    Publication date: July 8, 2010
    Applicant: University of Wollongong
    Inventors: Gordon George Wallace, Ju Chen, Andrew Ian Minett
  • Publication number: 20100038238
    Abstract: The embodiments of the invention relate to an electrode for electrolysis comprising an electrode substrate and a coating of the electrode substrate with a polycrystalline diamond material, that the electrode substrate consists of a base body of carbon material and at least one contact layer of the electrode substrate carrying the coating consists of a non-metallic, electrically conductive material.
    Type: Application
    Filed: July 17, 2009
    Publication date: February 18, 2010
    Applicant: Hoffmann & Col., Elektrokohle AG
    Inventors: Klaus Reiser, Conrad Reynvaan, Stefan Schneweis
  • Publication number: 20100038235
    Abstract: The present invention provides a diamond electrode that, in waste water treatment or production of functional water by using electrolysis, does not cause contamination of a solution or release of toxic substances, achieves enhancement of the energy efficiency, has excellent durability, and can endure prolonged use without damage. The present invention further provides a treatment device where the above electrode is used, and a method for manufacturing the above electrode. In a diamond electrode according to the present invention, the electrode includes a conductive diamond film covering one surface of a substrate. Assuming that the thickness of the substrate is T (?m) and the thickness of the conductive diamond film is t1 (?m), the ratio between them is 0.0010?t1/T?0.022 and 10?t1?70.
    Type: Application
    Filed: October 15, 2008
    Publication date: February 18, 2010
    Inventors: Shigeru Yoshida, Toshiya Takahashi, Yuichiro Seki, Katsuhito Yoshida, Fuminori Higuchi
  • Publication number: 20090211901
    Abstract: Methods for preparing flexible transparent conducting carbon nanotube (CNT) films, the CNT film prepared from said methods, a method of treating CNT film by using thionyl bromide (SOBr2) as a dopant are provided. A novel CNT film laminate with a sandwich structure are also provided, a transparent, flexible anode including the CNT film and an organic light-emitting diodes (LEDs) including the anode are also provided. The method of the present application can very quickly and completely remove the filter membrane, compared with a general immersion method. CNTs are not destroyed by the “soft method”, which will allow for expanded applications in electroluminescent or photovoltaic devices.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 27, 2009
    Inventors: Hisashi Kajiura, Yongming Li, Yu Wang, Yunqi Liu, Lingchao Cao, Dacheng Wei, Dachuan Shi, Hongliang Zhang, Gui Yu
  • Patent number: 7569765
    Abstract: An electrode according to the present invention includes a substrate, and a conductive layer containing carbon particles or platinum particles and a conductive binder for binding the carbon particles or platinum particles formed above the substrate. By binding the carbon particles or the platinum particles with the conductive binder, it is possible to form an electrode with a porous structure where spaces that communicate with a surface of the conductive layer are defined between the corresponding carbon particles or platinum particles, thereby increasing the effective area (surface area) of the electrode. The photoelectric conversion elements and the dye-sensitized photovoltaic or solar cells according to the present invention can be manufactured at a low cost and have an increased effective area, making it possible to obtain excellent photoelectric conversion efficiency.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: August 4, 2009
    Assignee: Fujikura Ltd.
    Inventors: Hiroshi Matsui, Nobuo Tanabe
  • Patent number: 7468121
    Abstract: The present invention provides a conductive diamond electrode having: a conductive substrate; a coating layer formed on a surface of the conductive substrate, the coating layer containing one of a metal and an alloy each including at least one of niobium and tantalum; and a conductive diamond layer formed on a surface of the coating layer, and a process for producing the conductive diamond electrode.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: December 23, 2008
    Assignee: Permelec Electrode Ltd.
    Inventors: Masashi Hosonuma, Masaharu Uno, Tomoyasu Shibata, Yoshinori Nishiki, Tsuneto Furuta
  • Patent number: 7455754
    Abstract: The invention relates to a diamond electrode with synthetically produced, electrically conductive (doped) diamonds. The surface has diamond particles (5) embedded in a metal or metal alloy layer so as to produce a conductive connection to the metal or metal alloy.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 25, 2008
    Assignee: Pro Aqua Diamantelektroden Produktion GmbH & Co KEG
    Inventors: Wolfgang Wesner, Robert Hermann, Michael Schelch, Michael Kotschan, Wolfgang Staber
  • Publication number: 20080128275
    Abstract: A method of making an anode for alkaline electrolysis cells includes adsorption of precursor material on a carbonaceous material, conversion of the precursor material to hydroxide form and conversion of precursor material from hydroxide form to oxy-hydroxide form within the alkaline electrolysis cell.
    Type: Application
    Filed: November 30, 2006
    Publication date: June 5, 2008
  • Patent number: 7335285
    Abstract: The present invention provides an electrolytic anode for use in electrolytically synthesizing a fluorine-containing substance by using an electrolytic bath containing a fluoride ion including: an electroconductive substrate having a sure including an electroconductive carbonaceous material; and an electroconductive carbonaceous film having a diamond structure, the electroconductive carbonaceous film coating a part of the electroconductive carbonaceous substrate, and a method for electrolytically synthesizing a fluorine-containing substance using the electrolytic anode.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: February 26, 2008
    Assignees: Permelec Electrode Ltd., Toyo Tanso Co., Ltd.
    Inventors: Tsuneto Furuta, Masaharu Uno, Yoshinori Nishiki, Tetsuro Tojo, Hitoshi Takebayashi, Masashi Kodama
  • Patent number: 7332065
    Abstract: 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: Grant
    Filed: June 14, 2004
    Date of Patent: February 19, 2008
    Assignee: Akzo Nobel N.V.
    Inventor: Takayuki Shimamune
  • Patent number: 7309441
    Abstract: A method is disclosed, which is capable of subjecting microorganisms to sterilizing or bacteriostatic treatment with good efficiency as compared with the conventional sterilizing or bacteriostatic method using a noble metal electrode. Microorganism-containing water to be treated is electrochemically treated using an anode having conductive diamond to bring the microorganism into contact with the anode, thereby undergoing sterilization. Since the conductive diamond has a high oxidation potential as compared with other electrode substances, direct oxidation reaction due to contact between a microorganism in water to be treated, such as Legionella bacteria, and the anode surface occurs strongly as compared with other electrodes, thereby enabling effective sterilization. The conductive diamond has a high ability to generate ozone and has an excellent formation efficiency with respect to the generation of hydrogen peroxide and radicals. Accordingly, an indirect sterilizing effect can also be expected.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: December 18, 2007
    Assignee: Permelec Electrode Ltd.
    Inventors: Philippe Rychen, Laurent Pupunat, Tsuneto Furuta, Masao Sekimoto, Hozumi Tanaka, Yoshinori Nishiki, Shuhei Wakita
  • Patent number: 7285194
    Abstract: A conductive diamond electrode including a conductive substrate comprising a carbonaceous material, a conductive diamond catalyst layer formed on a surface of the conductive substrate, and a carbon fluoride formed on an exposed portion present on the surface of the conductive substrate. The formed carbon fluoride prevents the conductive substrate from contacting with an electrolytic solution, thereby suppressing corrosion of the substrate. A long life of the electrode can be attained.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: October 23, 2007
    Assignees: Permelec Electrode Ltd., Toyo Tanso Co., Ltd.
    Inventors: Masaharu Uno, Yoshinori Nishiki, Tsuneto Furuta, Miho Ohashi, Tetsuro Tojo, Hitoshi Takebayashi, Tateki Kurosu
  • Patent number: 7018568
    Abstract: The invention is directed to conductive polymer compositions, catalytic ink compositions (e.g., for use in screen-printing), electrodes produced by deposition of an ink composition, methods of making, and methods of using thereof. An exemplary ink material comprises platinum black and/or platinum-on-carbon as the catalyst, graphite as a conducting material, a polymer binding material, and an organic solvent. The polymer binding material is typically a copolymer of hydrophilic and hydrophobic monomers. The conductive polymer compositions of the present invention can be used, for example, to make electrochemical sensors. Such sensors can be used in a variety of analyte monitoring devices to monitor analyte amount or concentrations in subjects, for example, glucose monitoring devices to monitor glucose levels in subjects with diabetes.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: March 28, 2006
    Assignee: Animas Technologies LLC
    Inventor: Michael J. Tierney
  • Publication number: 20040069622
    Abstract: An oxygen-depolarised cathode for aqueous hydrchloric acid electrolysis membrane cells is described, the cathode being in contact with the membrane and capable of preventing the release of hydrogen into oxygen even at the highest current densities. Hydrochloric acid may also be of technical grade with a concentration limited to 15%, whereas the operating temperature must not exceed 60° C. The cathode contains a mixture of rhodium sulphide and a metal of the platinum group applied in a single layer or alternatively applied separately in two distinct layers.
    Type: Application
    Filed: July 17, 2003
    Publication date: April 15, 2004
    Inventors: Gian Nicola Martelli, Fulvio Federico
  • Publication number: 20040053050
    Abstract: The invention concerns modified graphite particles obtained from graphite or based on graphite, said particles having impurities in their internal structure and having, at the surface, a low, even nil, rate of an impurity or several impurities. Said particles further comprise at least one of the following characteristics: a tab density ranging between 0.3 and 1.5 g/cc; the shape of a potato; and a size distribution such that the D90/D10 ratio varies between 2 and 5 and the particles have a size ranging between 1 and 50 &mgr;m. Said particles are useful for fuel cells, electrochemical generators or moisture sensor and/or oxygen sensor and they have interesting electrochemical properties. The resulting electrochemical cells and batteries are stable and safe.
    Type: Application
    Filed: September 26, 2003
    Publication date: March 18, 2004
    Inventors: Abdelbast Guerfi, Fernand Brochu, Kimio Kinoshita, Karim Zaghib
  • Publication number: 20040045817
    Abstract: A field emission array adopting carbon nanotubes as an electron emitter source, wherein the array includes a rear substrate assembly including cathodes formed as stripes over a rear substrate and carbon nanotubes; a front substrate assembly including anodes formed as stripes over a front substrate with phosphors being deposited on the anodes, a plurality of openings separated by a distance corresponding to the distance between the anodes in a nonconductive plate, and gates formed as stripes perpendicular to the stripes of anodes on the nonconductive plate with a plurality of emitter openings corresponding to the plurality of openings. The nonconductive plate is supported and separated from the front substrate using spacers. The rear substrate assembly is combined with the front substrate assembly such that the carbon nanotubes on the cathodes project through the emitter openings.
    Type: Application
    Filed: September 10, 2003
    Publication date: March 11, 2004
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Won-Bong Choi, Min-Jae Yun, Yong-Wan Jin
  • Patent number: 6475358
    Abstract: A method of treating a carbonaceous cell component of an electrolyte cell for the production of aluminum, to impart protection against deterioration during operation of the cell. A liquid suspension of a refractory material dispersed in a lignosulfonate binder solution is prepared and applied as a protective coating to the surface of carbonaceous cell components and allowed to dry.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: November 5, 2002
    Assignee: Alcan International Limited
    Inventors: Amir A. Mirtchi, Jules Bergeron
  • Patent number: 6447667
    Abstract: A cermet anode of an electrolytic cell is protected from thermal shock during cell start-up by coating an outer surface portion of the anode with a coating composition comprising carbon or aluminum or a mixture thereof. A particularly preferred coating composition includes an aluminum underlayer adjacent the outer surface portion of the anode, and a carbon overlayer overlying the underlayer. A support structure assembly supporting the cermet anode includes a high alumina ceramic material. In a preferred embodiment, the high alumina ceramic material is protected from thermal shock and corrosion by the coating composition of the invention.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: September 10, 2002
    Assignee: Alcoa Inc.
    Inventors: Calvin Bates, Patricia A. Stewart, Larry F. Wieserman
  • Patent number: 6423193
    Abstract: An electrode (22) formed from a layer (24) of tetrahedral carbon doped with nitrogen (taC:N) has both electroanalytical and electrosynthetic applications. The electrode includes a substrate material (26), such as a silicon wafer, for supporting the taC:N layer. The electrode has good durability under a high anodic potential and high selectivity for conversion of chloride ions to chlorine, and for other electron transfer reactions. The electrode is readily formed at ambient temperatures by vacuum deposition of carbon and nitrogen ions on to the substrate. Masking of the substrate during deposition allows the formation of microelectrode arrays.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: July 23, 2002
    Assignee: Case Western Reserve University
    Inventors: Barry Miller, Rafi Kalish, Xu Shi
  • Patent number: 6368476
    Abstract: Gas Diffusion Electrodes (GDEs) play a pivotal role in clean energy production as well as in electrochemical processes and sensors. These gas-consuming electrodes are typically designed for liquid electrolyte systems, and are commercially manufactured by hand or in a batch process. However, CDEs using the new electrolytes demand improved electrode structures. This invention pertains to GDEs and gas diffusion media with new structures for systems using membrane electrode assemblies (MEAs), and automated methods of manufacture that lend themselves to continuous mass production. Unexpected improvements in gas and vapor transport through the electrode are realized by incorporating a new dispersion process in the construction, reformulating the applied mix with solution additives, and creating a novel coating structure on a conductive web. Furthermore, combining these changes with a judicious choice in coating methodology allows one to produce these materials in a continuous, automated fashion.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: April 9, 2002
    Inventors: Michael DeMarinis, Emory S. De Castro, Robert J. Allen, Khaleda Shaikh
  • Publication number: 20020009638
    Abstract: A coated composite electrode for supporting an anodic electrochemical reaction includes a substrate composed of an electrically conductive metal and a mixture composed of lead and manganese oxides of between about 70 and 90 weight percent and of binders and extenders together being of between about 10 and 30 weight percent. The mixture is in the form of a coating on the substrate which constitutes a site of electrochemical oxidation. The coating is pressed above about 1500 psi pressure and at a temperature within the range of about 25 to 230 degrees C. The composite electrode provides corrosion inhibition for the lead alloy and improved current efficiency in systems with iron, such as copper electrowinning.
    Type: Application
    Filed: June 22, 2001
    Publication date: January 24, 2002
    Inventors: Marion Dattilo, Leonard J. Lutz
  • Publication number: 20010035347
    Abstract: A method of treating a carbonaceous cell component of an electrolyte cell for the production of aluminum, to impart protection against deterioration during operation of the cell. A liquid suspension of a refractory material dispersed in a lignosulfonate binder solution is prepared and applied as a protective coating to the surface of carbonaceous cell components and allowed to dry.
    Type: Application
    Filed: February 6, 2001
    Publication date: November 1, 2001
    Inventors: Amir A. Mirtchi, Jules Bergeron