In Situ Generation of Poly (Vinylene Carbonate) Based Solid Electrolyte with Interfacial Stability for LiCoO2 Lithium Batteries. Issue 2 (10th November 2016)

• Record Type: Journal Article
• Authors: Chai, Jingchao; Liu, Zhihong; Ma, Jun; Wang, Jia; Liu, Xiaochen; Liu, Haisheng; Zhang, Jianjun; Cui, Guanglei; Chen, Liquan
• Is Part Of: Advanced science. Volume 4:Issue 2(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-11-10
• Subjects: in situ generation -- interfacial stability -- lithium batteries -- poly (vinylene carbonate) -- solid electrolyte; Science -- Periodicals; 505
• DOI: 10.1002/advs.201600377
• Languages: English
• ISSNs: 2198-3844

Abstract

Abstract : Nowadays it is extremely urgent to seek high performance solid polymer electrolyte that possesses both interfacial stability toward lithium/graphitic anodes and high voltage cathodes for high energy density solid state batteries. Inspired by the positive interfacial effect of vinylene carbonate additive on solid electrolyte interface, a novel poly (vinylene carbonate) based solid polymer electrolyte is presented via a facile in situ polymerization process in this paper. It is manifested that poly (vinylene carbonate) based solid polymer electrolyte possess a superior electrochemical stability window up to 4.5 V versus Li/Li + and considerable ionic conductivity of 9.82 × 10 −5 S cm −1 at 50 °C. Moreover, it is demonstrated that high voltage LiCoO2 /Li batteries using this solid polymer electrolyte display stable charge/discharge profiles, considerable rate capability, excellent cycling performance, and decent safety characteristic. It is believed that poly (vinylene carbonate) based electrolyte can be a very promising solid polymer electrolyte candidate for high energy density lithium batteries. Abstract : A kind of novel poly (vinylene carbonate)‐based solid electrolyte with good interfacial compatibility for high voltage lithium batteries is generated via a facile in situ polymerization process. LiCoO2 /Li battery using this poly (vinylene carbonate)‐based solid electrolyte displays stable charge/discharge profiles, considerable rate capability, excellent cycling performance, and decent safety characteristic.