CARBON-CLOTH-BASED ELECTROCATALYTIC GAS DIFFUSION ELECTRODES, ASSEMBLY AND ELECTROCHEMICAL CELLS COMPRISING THE SAME

摘要

Thin gas diffusion electrodes comprising open pore carbon cloth substrates [1] provided with a uniform mixture of catalytic carbon particles and preferably Teflon particles [2, 3] 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 [4] throughout the area of the cloth and connected to external terminals for use in electrochemical cells, including metal-air batteries and zinc electrowinning cells and the like, operating at high current densities.