Patent ID: 9564642
Date: 2017-02-07
CPC Classifications: H01M,Y02E

Claim:
1. A solid polymer electrolyte hydrogen/air fuel cell comprising a solid polymer electrolyte, a cathode side comprising a cathode, and an anode side comprising an anode and a selectively conducting metal oxide layer connected in series electrically wherein: the selectively conducting metal oxide layer is characterized by a low electrical resistance in the presence of hydrogen or fuel and a high electrical resistance in the presence of air; the electrical resistance of the selectively conducting metal oxide layer in the presence of hydrogen is more than 100 times lower than the electrical resistance in the presence of air; the cathode comprises a carbon supported PtCo alloy catalyst comprising 25-30% Pt and 2-6% Co by weight; the selectively conducting metal oxide is tin oxide (SnO, SnO