Aromatic monomer gassing agents for protecting non-aqueous lithi

Details Aromatic monomer gassing agents for protecting non-aqueous lithi Aromatic monomer gassing agents for protecting non-aqueous lithi

1996-10-08

1998-07-07

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

429 57, 429194, H01M 200

Patent

active

057766274

ABSTRACT:
Non-aqueous rechargeable lithium batteries are often equipped with internal electrical disconnect devices to protect against overcharge abuse. At the abnormally high voltages of overcharge, these devices can be activated by gasses generated as a result of the electrochemical polymerization of suitable monomer additives incorporated in the electrolyte. Aromatic compounds such as biphenyl are particularly suitable aromatic additives for LiCoO.sub.2 based lithium ion batteries.

REFERENCES:
patent: 4943497 (1990-07-01), Oishi et al.
patent: 5567539 (1996-10-01), Takahashi et al.
J. Electrochem. Soc., 131(6), Jun. 1984, pp. 1452-1456.

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