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Organic additives for the electrolytes of rechargeable lithium batteries

Authors
Journal
Journal of Power Sources
0378-7753
Publisher
Elsevier
Publication Date
Volume
26
Identifiers
DOI: 10.1016/0378-7753(89)80182-x

Abstract

Abstract The effects of some organic additives containing hetero-atoms on the charge—discharge characteristics of lithium have been investigated in propylene carbonate- or dimethylsulfoxide-based electrolytes. The addition of thiophene to propylene carbonate-based electrolytes improved the coulombic efficiency of the cycle, and the addition of pyrrole was effective for cycling in LiPF 6/dimethylsulfoxide. The effect of the addition of 2-methylfuran was significant in the solutions containing LiPF 6. The a.c. impedance behavior at the electrode/electrolyte interphase suggested that the addition effects are related to changes in the interphase structure.

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