High rate, thin film, bipolar nickel zinc battery having...

Details High rate, thin film, bipolar nickel zinc battery having... High rate, thin film, bipolar nickel zinc battery having...

H - Electricity

01

M

H01M 10/30 (2006.01) H01M 4/00 (2006.01) H01M 10/02 (2006.01) H01M 10/28 (2006.01) H01M 10/52 (2006.01)

Patent

CA 2380952

A high rate, alkaline nickel zinc cell is structured as a bipolar cell having a current collector, with a positive nickel hydroxide electrode on one side and a zinc negative electrode on the other side. The current collector comprises a sheet copper substrate in contact with the negative electrode. A a sheet nickel substrate is laminated to the copper current collector, and is in contact with the positive electrode. The nickel hydroxide positive electrode is applied in a thin film to the respective face of the sheet nickel substrate. The zinc negative electrode comprises copper foam which is secured to the copper current collector at its edges, and is pasted. The copper foam is pressed so as to form a plurality of pockets which face the copper current collector when assembled. Thus, access its provided to the negative electrode for oxygen generated at the positive electrode during overcharge conditions.

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