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    • 3. 发明授权
    • Process of making a gas diffusion electrode
    • 制造气体扩散电极的方法
    • US3663303A
    • 1972-05-16
    • US3663303D
    • 1969-04-16
    • BOSCH GMBH ROBERT
    • DIETZ HERMANN
    • H01M4/88H01M13/04
    • H01M4/8842
    • A porous gas diffusion electrode which is composed of a gaspermeable support and an electrically conductive catalyst layer of electrocatalytically active metal is made by applying the catalyst layer to the support in the form of a pigmented lacquer containing a metal compound forming a precursor of said catalyst, then drying or hardening the lacquer while on the support so as to adhere it thereto and thereafter subjecting the catalyst precursor compound to an activation treatment to convert the compound to the active metal and to provide the necessary porosity to the layer. The invention also comprises a diffusion electrode which is composed of a gas-permeable, electrolyte-impermeable porous support and a porous lacquer adhered to the support and, finely distributed through said lacquer layer, a conductive material that is resistant to the conditions of operation and an electrocatalytically active metal. The electrode of the invention is useful in fuel cells or metalair cells, in particular as a self-breathing hydrophobic gas electrode, for the electrochemical reaction of reactive gases.
    • 通过将透气性载体和电催化活性金属的导电催化剂层构成的多孔气体扩散电极通过将催化剂层以含有金属化合物的形式的着色漆的形式施加到载体上,形成前述所述 催化剂,然后在载体上干燥或硬化,以便将其粘附在其上,然后使催化剂前体化合物进行活化处理以将化合物转化为活性金属并为该层提供必要的孔隙率。