Secondary battery having the separator

Details Secondary battery having the separator Secondary battery having the separator

H - Electricity

01

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319/49

H01M 10/02 (2006.01) H01M 2/18 (2006.01) H01M 8/24 (2006.01) H01M 10/36 (2006.01)

Patent

CA 1222281

ABSTRACT A secondary battery prevents a localized formation of dendritic metal zinc during a charging and increases a current efficiency as far as possible. The secondary battery includes a negatively active material of a metallic ion, a positive electrode, a negative electrode and a separator having an metallic-ion-permeable sheet, a plurality of projections formed with a nonsymmetrical shape on opposite sides of the sheet and a diffusing means for diffusing a flow of zinc ion current flowing around the projection, and the diffusing means is provided in a vicinity of a connect- ing portion of the sheet and the projection.

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