Electrochemical cell electrode
AssigneeThe Dow Chemical Company
InventorsYu-Min Tsou, Robert D. Door, Glenn A. Eisman
Life of this patent
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Abstract
A supported catalyst useful in the preparation of an electrode for an electrochemical cell which comprises the residue remaining after heating at about 500.degree. to about 800.degree. C. a transition metal and a polymer such as polyvinylpyridine all adsorbed on a support material. Useful electrodes are prepared by combining the supported catalyst with a current collector.
Claims15
An electrode for an electrochemical cell comprising a current collector, a mixture of a water-repellent binder and a support material having adsorbed thereon a transition metal or noble metal catalyst comprising a residue remaining after heating of a transition or noble metal salt and a polymer selected from the group consisting of polymers and copolymers of poly(4-vinylpyridine), poly(2-vinylpyridine), poly(ethyleneimine), poly(aminostyrene), poly(vinylcarbazole), poly(acrylonitrile), poly(methacrylonitrile), and poly(allylamine) wherein said electrode is prepared by the process comprising treating said support material with a solvent solution of a mixture of a transition metal or noble metal salt and said polymer, removing said solvent, and heating said mixture under an inert atmosphere at a temperature of about 500 to about 800 degrees centigrade.
An electrochemical cell comprising electrodes consisting of an anodic electrode, a cathodic electrode, and an electrolyte and at least one of said electrodes comprising a current collector combined with a layer of a mixture of a binder and a transition metal or noble metal catalyst on a support material, said catalyst comprising a residue remaining after heating at about 500 to about 800 degrees centigrade a mixture of a transition or noble metal salt and a polymer selected from the group consisting of polymers and copolymers of poly(4-vinylpyridine), poly(2-vinylpyridine), poly(ethyleneimine), poly(aminostyrene), poly(vinylcarbazole), poly(acrylonitrile), poly(methacrylonitrile), and (poly(allylamine).
A process for preparing a supported transition metal or supported noble metal catalyst comprising:
- A. adsorbing onto a support material a mixture comprising a solvent solution of a transition or a noble metal salt and a polymer selected from the group consisting of polymers and copolymers of poly(4-vinylpyridine), poly(2-vinylpyridine), poly(ethyleneimine), poly(aminostyrene), poly(vinylcarbazole), poly(acrylonitrile), poly(methacrylonitrile), and poly(allylamine),
- B. removing said solvent, and
- C. heating said mixture at a temperature of about 500 to about 800 degrees centigrade.
An improved supported transition metal or supported noble metal catalyst comprising a residue remaining after heating a support material and a mixture of a binder, a transition or noble metal salt, and a polymer or copolymer selected from the group consisting of polymers and copolymers of poly(4-vinylpyridine), poly(2-vinylpyridine), poly(ethyleneimine), poly(aminostyrene), poly(vinylcarbazole), poly(acrylonitrile), poly(methacrylonitrile), and poly(allylamine).
Dependencies are inferred from the claim text.