Journal
ADVANCED SCIENCE
Volume 4, Issue 11, Pages -Publisher
WILEY
DOI: 10.1002/advs.201700174
Keywords
cationic mechanism; crosslinking; in situ polymerization; poly(ethylene glycol) diglycidyl ether; solid polymer electrolytes
Categories
Funding
- Chinese Academy of Sciences [XDA09010105]
- Shandong Provincial Natural Science Foundation, China [ZR2015QZ01]
- CAS-QIBEBT Director Innovation Foundation
- Qingdao Key Lab of solar energy utilization and energy storage technology
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It is urgent to seek high performance solid polymer electrolytes (SPEs) via a facile chemistry and simple process. The lithium salts are composed of complex anions that are stabilized by a Lewis acid agent. This Lewis acid can initiate the ring opening polymerization. Herein, a self-catalyzed strategy toward facile synthesis of crosslinked poly(ethylene glycol) diglycidyl ether-based solid polymer electrolyte (C-PEGDE) is presented. It is manifested that the poly(ethylene glycol) diglycidyl ether-based solid polymer electrolyte possesses a superior electrochemical stability window up to 4.5 V versus Li/Li+ and considerable ionic conductivity of 8.9 x 10(-5) S cm(-1) at ambient temperature. Moreover, the LiFePO4/C-PEGDE/Li batteries deliver stable charge/discharge profiles and considerable rate capability. It is demonstrated that this self-catalyzed strategy can be a very effective approach for high performance solid polymer electrolytes.
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