Secondary battery having a separator
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United States of America Patent
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Mar 24, 1987
Issued Date -
N/A
app pub date -
Jan 13, 1986
filing date -
Jun 17, 1983
priority date (Note) -
Expired
status (Latency Note)
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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 connecting portion of the sheet and the projection.
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