Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 10, Pages 8737-8741Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b16218
Keywords
Li-ion battery; poly(ethyl cyanoacrylate); in situ polymerization flexible; polymer electrolytes
Funding
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09010105]
- Shandong Provincial Natural Science Foundation, China [ZR2015QZ01]
- 135 Projects Fund of CAS-QIBEBT Director Innovation Foundation
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Polycyanoacrylate is a very promising matrix for polymer electrolyte, which possesses advantages of strong binding and high electrochemical stability owing to the functional nitrile groups. Herein, a facile and reliable in situ polymerization strategy of poly(ethyl cyanoacrylate) (PECA) based gel polymer electrolytes (GPE) via a high efficient anionic polymerization was introduced consisting of PECA and 4 M LiClO4 in carbonate solvents. The in situ polymerized PECA gel polymer electrolyte achieved an excellent ionic conductivity (2.7 x 10(-3) S cm(-1)) at room temperature, and exhibited a considerable electrochemical stability window up to 4.8 V vs Li/Li+. The LiFePO4/PECA-GPE/Li and LiNi1.5Mn0.5O4/PECAGPE/Li batteries using this in-situ-polymerized GPE delivered stable charge/discharge profiles, considerable rate capability, and excellent cycling performance. These results demonstrated this reliable in situ polymerization process is a very promising strategy to prepare high performance polymer electrolytes for flexible thin-film batteries, micropower lithium batteries, and deformable lithium batteries for special purpose.
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