H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/94 (2006.01) H01M 12/06 (2006.01) H01M 2/10 (2006.01) H01M 6/50 (2006.01)
Patent
CA 2355535
An improved gas-diffusion cathode for use in an electrochemical cell comprising an electrically conductive cathode member having a first side communicable with an aqueous electrolyte and a second side communicable with a gaseous medium; and a water-impermeable membrane adjacent said cathode member second side to reduce passage of liquid water between said cathode member and said gaseous medium and having a membrane first side and a membrane second side wherein said membrane first side faces said cathode member and wherein said water-impermeable membrane comprises one or more portions defining one or more openable and closeable apertures the improvement wherein said apertures are associated with one or more integrally-formed resiliently flexible flaps on said membrane first side to effect said opening and closing. The batteries have reduced unwanted water vapour ingress and egress characteristics in its no-load mode.
Iarochenko Alexandre M.
Kulakov Evgeny B.
Aluminum-Power Inc.
Gowan Intellectual Property
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