Preparation of polymer electrolytes based on the polymerized imidazolium ionic liquid and their applications in lithium batteries | Zendy

Li Mingtao | Zendy; Wang Lu | Zendy; Du Tingting | Zendy

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Preparation of polymer electrolytes based on the polymerized imidazolium ionic liquid and their applications in lithium batteries

Author(s) -

Li Mingtao,

Wang Lu,

Du Tingting

Publication year - 2014

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.40928

Subject(s) - ionic liquid , electrolyte , electrochemical window , ionic conductivity , lithium (medication) , electrochemistry , materials science , polymerization , salt (chemistry) , chemical engineering , polymer , imide , conductivity , polymer chemistry , lithium battery , inorganic chemistry , ionic bonding , chemistry , organic chemistry , ion , electrode , catalysis , composite material , medicine , engineering , endocrinology

The polymer electrolytes based on a polymerized ionic liquid (PIL) as polymer host and containing 1,2‐dimethyl‐3‐butylimidazolium bis(trifluoromethanesulfonyl)imide (BMMIM‐TFSI) ionic liquid, lithium TFSI salt, and nanosilica are prepared. The PIL electrolyte presents a high ionic conductivity, and it is 1.07 × 10 −3 S cm −1 at 60°C, when the BMMIM‐TFSI content reaches 60% (the weight ratio of BMMIM‐TFSI/PIL). Furthermore, the electrolyte exhibits wide electrochemical stability window and good lithium stripping/plating performance. Preliminary battery tests show that Li/LiFePO 4 cells with the PIL electrolytes are capable to deliver above 146 mAh g −1 at 60°C with very good capacity retention. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40928.

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