Effects of Bulky LATP in PEO-based Hybrid Solid Electrolytes

作     者：XUE Xi-Lai ZHANG Xiang-Xin LIN Jun-Hong CHEN Su-Jing CHEN Yuan-Qiang LIU Yong-Chuan ZHANG Yi-Ning XUE Xi-Lai;ZHANG Xiang-Xin;LIN Jun-Hong;CHEN Su-Jing;CHEN Yuan-Qiang;LIU Yong-Chuan;ZHANG Yi-Ning

作者机构：Key Laboratory of Optoelectronic Materials Chemistry and PhysicsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of SciencesBeijing 100049China Dalian National Laboratory for Clean EnergyChinese Academy of SciencesDalian 161000China 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2020年第39卷第11期

页      面：1941-1948页

核心收录：

学科分类：081704[工学-应用化学] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：the Fujian Provincial Science and Technology Program (No. 2018H0042,2019T3017) Putian Municipal Science and Technology Program (2019HJSTS009) the DNL Cooperation Fund,CAS (DNL180308) 

主　　题：hybrid solid electrolytes bulky LATP polyethylene oxide 

摘      要：Solid polymer electrolytes(SPEs) have been considered as the spotlight in recent years due to their high safety, non-flammability and good flexibility. Nonetheless, high crystallinity of polymer matrix leads to low ionic conductivity at ambient conditions and retards the practical applications of SPEs. Herein, we report hybrid solid electrolytes(HSE) containing bulky LATP in poly(ethylene oxide)(PEO) matrix, which significantly enhances the electrochemical properties. LATP has been easily obtained by an accessible solid-state method. The solid electrolyte based on 20 wt% LATP in PEO polymer matrix(abbreviated as PEO-20) exhibits an ionic conductivity of 2.1 ×10-5 S·cm-1 at 30 ℃, an order of magnitude higher than 2.9 × 10-6 S·cm-1 of the pristine PEO solid electrolyte(abbreviated as PEO-0), mainly resulting from the decline of crystallinity in polymer matrix. The electrochemical window of PEO-20 can reach 4.84 V at room temperature, compared with 4.40 V for PEO-0, which could be compatible with high-voltage cathode materials.