Process for making raney nickel coated cathode, and product...

Details Process for making raney nickel coated cathode, and product... Process for making raney nickel coated cathode, and product...

C - Chemistry, Metallurgy

25

B

204/192, 117/53

C25B 11/04 (2006.01) C23C 4/18 (2006.01) C23F 1/36 (2006.01)

Patent

CA 1235386

TITLE PROCESS FOR MAKING RANEY NICKEL COATED CATHODE, AND PRODUCT THEREOF ABSTRACT OF THE DISCLOSURE Raney-nickel coated cathodes are made by plasma spraying a nickel/aluminum composition containing 56 to 59% by wt. nickel onto an electrically conductive foraminous cathode substrate, and activating the coated substrate by leaching aluminum from the coating with caustic. The activated cathode is especially useful in chloroalkali processes, as it operates at low hydrogen overvoltage, and durable against stalling and flaking.

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