Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7740435 | Journal of Power Sources | 2013 | 5 Pages |
Abstract
The electrochemical and battery performances of a CH3-O-(C2H4O)3-CH3/LiN(SO2CF3)2 1:1 equimolar complex electrolyte were evaluated using [Li metal|Li metal], [LiFePO4|Li metal], and [LiNi1/3Mn1/3Co1/3O2|Li metal] cells. A relatively favorable surface was formed at the Li metal/electrolyte interface revealed by observation of the storage time dependence of the electrochemical impedance spectroscopy. A 3V-class [LiFePO4|Li metal] cell exhibited favorable capacity retention with little degradation after 600 cycles (2.5-4.0Â V). A 4V-class [LiNi1/3Mn1/3Co1/3O2|Li metal] cell also exhibited good capacity retention of approximately 60% of the initial discharge capacity after 400 cycles (2.7-4.2Â V), while the capacity retention decreased markedly upon increasing the upper charge cutoff voltage above 4.4Â V.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Shiro Seki, Nobuyuki Serizawa, Katsuhito Takei, Kaoru Dokko, Masayoshi Watanabe,