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Cathode characteristics of organic electron acceptors for lithium batteries

Journal Article · · J. Electrochem. Soc.; (United States)
DOI:https://doi.org/10.1149/1.2115542· OSTI ID:6589348
Discharge and charge characteristics of cathode-active materials for lithium batteries were studied. Electron acceptors of charge transfer complex with high electron affinity were examined as cathode-active materials because they were expected to have high cell voltage. These electron acceptors are 2,4,7-trinitro-9-fluorenone (TNF), 2,4,5,7-tetranitro-9-fluorenone, 7,7,8,8-tetracyanoquinodimethane, 9, 10-phenanthrenequinone, and 13 other compounds. Among these compounds, TNF showed the highest discharge capacity (1050 A-hr/kg) and the highest energy density (2030 W-hr/kg). Cycle lives of TNF were 400 and 54 times at charge-discharge capacity of 100 of A-hr/kg (1.2 electron transfer per 1 mol TNF) and 200 A-hr/kg (2.4 electron transfer per 1 mol TNF), respectively. The cycle tests indicate reversibility of TNF up to two-electron transfer. 19 references.
Research Organization:
Nippon Telegraph and Telephone Public Corp., Tokai, Japan
OSTI ID:
6589348
Journal Information:
J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 131; ISSN JESOA
Country of Publication:
United States
Language:
English