Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7732318 | Journal of Power Sources | 2015 | 5 Pages |
Abstract
An organo gel with only 6Â wt % tetra-armed poly(ethylene glycol), TetraPEG, was prepared and applied as a novel gel electrolyte for Li ion batteries (LIBs). The TetraPEG gel electrolyte containing 1.0Â M LiPF6 in binary or ternary mixtures, i.e., ECÂ +Â DEC and ECÂ +Â DECÂ +Â TFEP (EC: ethylene carbonate, DEC: diethyl carbonate and TFEP: tris(2,2,2-trifluoroethyl)phosphate showed high ionic conductivity required for the use in LIB systems. The TetraPEG gel based on ternary ECÂ +Â DECÂ +Â TFEP system acts as a nonflammable gel electrolyte at the TFEP content higher than 20 vol%. In cyclic voltammetry and charge/discharge cycling tests, the TetraPEG gel electrolytes showed good reversibility for a graphite negative electrode.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Taisuke Hazama, Kenta Fujii, Takamasa Sakai, Masahiro Aoki, Hideyuki Mimura, Hisao Eguchi, Yanko Todorov, Nobuko Yoshimoto, Masayuki Morita,