Formulation of zinc negative electrode for rechargeable...

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H01M 4/36 (2006.01) H01M 4/24 (2006.01) H01M 4/42 (2006.01) H01M 10/26 (2006.01) H01M 4/62 (2006.01)

Patent

CA 2325637

A zinc electrode is provided for use in electrochemical cells having an alkaline electrolyte and high cycle life. The zinc electrode comprises a mixture of zinc oxide together with an inorganic fibre which contains silica and alumina. Preferably, the composition of the inorganic fibre is in the range of 80% to 99% alumina, and 1 % to 20% silica. Typically, the zinc electrode will further comprise an inorganic fibre additive in the range of 2% to 15% by weight of the zinc oxide electrode. Also, the zinc electrode will typically further include 2% up to 10% of bismuth oxide.

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