Hybrid electrode for metal-air cells - contg. a metal structure packed with carbon, coated on one side with nickel and on the other with PTFE

摘要

Hybrid electrode for metal/air cells comprises on the electrolyte side a hydrophilic layer of Ni for separation of the oxygen, on the gas side a hydrophobic layer of plastic matl. and between the two layers, for dissolving the oxygen a hydrophobic layer of catalytic carbon enclosing a metallic structure which is rigidly in contact with the Ni layer on the electrolyte side and, on the gas side penetrates beyond the carbon into the plastic layer. Improved mechanical stability and strength. The electrode can withstand more readily the cyclic changes due to dissoln. of oxygen and sepn. of oxygen.