Method for preparing an air breathing electrode
Abstract
Abstract A METHOD FOR PREPARING AN AIR BREATHING ELECTRODE WHICH COMPRISES APPLYING A CATALYST COMPOSITION TO A METALLIC GRID MEMBER, APPLYING A FLUOROCARBON POLYMER SHEET MATERIAL CONTAINING A POREFORMING AGENT ONTO THE SIDE OF THE CATALYST COMPOSITION AND THEREAFTER REMOVING THE PORE-FORMER FROM THE FLUOROCARBON POLYMER SHEET MATERIAL TO RENDER IT MICROPOROUS. THE FLUOROCARBON POLYMER SHEET MATERIAL IS APPLIED TO THE CATALYST COMPOSITION BY HOT PRESSING TO FIRMLY ATTACH IT THERETO. THE METALLIC SALT CORE-FORMER IS REMOVED FROM THE FLUOROCARBON POLYMER SHEET MATERIAL AFTER IT IS APPLIED TO THE CATALYST COMPOSITION, AND THE PORE-FORMER MAY BE REMOVED BY CONTACTING THE ELECTRODE WITH A LEACHING SOLVENT. AN ALTERNATIVE PROCEDURE COMPRISES APPLYING A LAYER OF A CATALYST COMPOSITION ONTO A FLUOROCARBON POLYMER SHEET MATERIAL CONTAINING A PORE FORMER, PLACING A METALLIC GRID ONTO THE CATALYST LAYER, HOT PRESSING THE GRID/CATALYST/FLUOROCARBON POLYMER TO FORM A UNITARY STRUCTURE, AND THEN REMOVING THE POREFORMER.
Inventors
- 👤 David P Boden
- 👤 Jack C Sklarchuk
Bibliographic Details
Claims Analysis
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