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AssigneeCaterpillar Industrial Inc.
InventorsArnold Z. Gordon, Ernest B. Yeager, Donald A. Tryk, M. Sohrab Hossain
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Gas diffusion electrodes, gas generating or consuming electrochemical cells utilizing such electrodes, and a method of preparing such electrodes are disclosed. The electrode comprises an electronically conductive porous body defining respective gas and electrolyte contacting surfaces. The electrode is prepared by forming the porous body, disposing the electrolyte contacting surface in contact with an electrolyte, and contacting the gas contacting surface with a gaseous atmosphere. Current is passed through the porous body at a degree of electrode polarization much higher than normal whereby modification of the electrode material is effected. If desired, a catalyst may be incorporated in the electrode and is subjected to pretreatment as well. The inventive electrodes exhibit superior voltage performance under oxygen polarization conditions.
A gas diffusion cathode adapted for use in an oxygen consuming electrochemical cell, said cathode being prepared by the method comprising the steps of:
A method of preparing a gas diffusion cathode adapted for use in an oxygen consuming electrochemical cell, said method comprising the steps of:
An electrochemical cell, comprising:
Dependencies are inferred from the claim text.