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Title: Chemical overcharge protection of lithium and lithium-ion secondary batteries

Patent ·
OSTI ID:321253

This invention features the use of redox reagents, dissolved in non-aqueous electrolytes, to provide overcharge protection for cells having lithium metal or lithium-ion negative electrodes (anodes). In particular, the invention features the use of a class of compounds consisting of thianthrene and its derivatives as redox shuttle reagents to provide overcharge protection. Specific examples of this invention are thianthrene and 2,7-diacetyl thianthrene. One example of a rechargeable battery in which 2,7-diacetyl thianthrene is used has carbon negative electrode (anode) and spinet LiMn{sub 2}O{sub 4} positive electrode (cathode). 8 figs.

Research Organization:
US Advanced Battery Consortium
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
FC02-91CE50336
Assignee:
EIC Laboratories, Inc., Norwood, MA (United States)
Patent Number(s):
US 5,858,573/A/
Application Number:
PAN: 8-703,577
OSTI ID:
321253
Resource Relation:
Other Information: PBD: 12 Jan 1999
Country of Publication:
United States
Language:
English