Carbon-cloth-based electrocatalytic gas diffusion electrodes, assembly and electrochemical cells comprising the same
AssigneePrototech Company
InventorsRobert Lindstrom, Robert J. Allen, Walter Juda
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Abstract
This disclosure is concerned with improved thin gas diffusion electrodes comprising open pore carbon cloth substrates provided with a uniform mixture of catalytic carbon particles and preferably Teflon particles adhered within the cloth pores and to the yarns of the cloth, formed into an electrode assembly with a plurality of closely spaced preferably noble metal current collecting contacts throughout the area of the cloth and connected to external terminals for use in electrochemical cells, including metal-air batteries and zinc electro-winning cells and the like, operating at high current densities.
Claims17
A thin electrocatalytic gas diffusion electrode and current collector assembly comprising an open pore electrically conducting carbon cloth having a coating of a uniform mixture of catalytic carbon particles and hydrophobic binder particles evenly deposited on said cloth, with said mixture of particles adhered within the cloth pores and to the yarns of the cloth, and a plurality of metallic current-collecting means electrically contacting said cloth and throughout the area thereof and connected to common electric terminal means for external connections, said metallic current-collecting means comprising at least one of highly conductive metal ribbons interwoven with said cloth, metal pins fitted into said cloth, metal grids applied to said cloth, and metal layering upon the yarns of said cloth.
Dependencies are inferred from the claim text.