CELL
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United States of America Patent
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Issued Date -
Dec 27, 2001
app pub date -
Jun 19, 1998
filing date -
Jun 20, 1997
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lithium cell, having positive and negative electrodes capable of occluding and releasing lithium and a non-aqueous electrolyte. The cell of the present invention includes a positive electrode, a negative electrode and a gelated electrolyte composed of a polyacrylonitrile containing high molecular material, a .gamma.-caprolactone containing non-aqueous solvent and an electrolyte salt mainly comprised of LiPF.sub.6, with the content of .gamma.-caprolactone in the gelated electrolyte being 30 mol % or less. With the gelated electrolyte composed of the polyacrylonitrile containing high molecular material, non-aqueous solvent and the electrolyte salt mainly composed of LiPF.sub.6, a carbide film is formed on the electrode surface, on contact with the flame, as a result of the carbonization of the high molecular material and the carbonization accelerating operation of LiPF.sub.6. This carbide film inhibits inflammation for realizing superior combustion retardant properties.
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