Method of forming a separator for alkaline electrolyte secondary electric cell
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United States of America Patent
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Mar 28, 2000
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N/A
app pub date -
Oct 2, 1997
filing date -
Oct 3, 1996
priority date (Note) -
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Abstract
An alkaline electrolyte secondary electric cell comprises at least one positive electrode and one negative electrode positioned either side of a separator composed of polyolefin fibers grafted with a vinyl monomer. The cell contains a device for absorbing and retaining nitrogen in a strongly basic medium, with a pH of at least 12. This device is constituted by the separator. A vinyl monomer solution is forced into the pores of the separator by drawing the solution through the separator, for example by using a suction pump.
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