Electrochemical cell comprising stable hydride- forming...

Details Electrochemical cell comprising stable hydride- forming... Electrochemical cell comprising stable hydride- forming...

H - Electricity

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319/80

H01M 4/38 (2006.01) C01B 3/00 (2006.01) H01M 10/34 (2006.01)

Patent

CA 1235739

ABSTRACT: "Electrochemical cell comprising stable hydride-forming materials." An electrochemical cell having a negative elec- trode comprising a compound derived from LaNi5, in which La is optionally substituted by a plateau pressure-in- creasing element and in which Ni is substituted entirely or partly by a plateau pressure-reducing element, for example, Co and/or Cu, with the object of considerably reducing volume steps and hence crack formation of the intermetallic compound during charging and discharging. Moreover, the corrosion of the intermetallic compound is counteracted by adding small quantities of Al, Cr and/or Si, which metals enhance the formation of a protecting oxide layer.

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