文献类型：期刊文献

英文题名：Enhanced electrochemical properties and interfacial stability of poly(ethylene oxide) solid electrolyte incorporating nanostructured Li1.3Al0.3Ti1.7(PO4)3 fillers for all solid state lithium ion batteries

作者：Zhao, Erqing[1]; Guo, Yudi[2]; Xin, Yuan[1]; Xu, Guangri[1]; Guo, Xiaowei[2]

第一作者：Zhao, Erqing

通讯作者：Guo, Yudi

机构：[1] School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China; [2] School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang, China

第一机构：School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China

通讯机构：[2]School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang, China|[11071]新乡学院;

年份：2021

卷号：45

期号：5

起止页码：6876-6887

外文期刊名：International Journal of Energy Research

收录：EI(收录号：20204909578446);Scopus(收录号：2-s2.0-85097016189)

语种：英文

外文关键词：Ethylene - Lithium-ion batteries - Lithium compounds - Electric discharges - Electrochemical properties - Solid electrolytes - Particle size - Solid-State Batteries - Filled polymers - Polyelectrolytes - Aluminum compounds - Nanoparticles - Polyethylene oxides - Calcination - Stability - Titanium compounds - Ions

摘要：Poly(ethylene oxide) (PEO) polymer electrolyte has been regarded as a potential solid electrolyte which can be applied in all-solid-state lithium-ion batteries (ASSLIBs). Nevertheless, low electrochemical properties and poor electrolyte/Li anode interfacial stability hinder its further application. In our work, the Li1.3Al0.3Ti1.7(PO4)3 (LATP) nanomaterials with Nasicon structure have been synthesized using a simple solvent-thermal method, followed by being embedded into PEO polymer to form LATP filled PEO solid composite electrolytes. Effects of LATP content and particle size on electrochemical performances of solid electrolytes have been studied. By adjusting the calcination temperature, the uniformly distributed Nasicon-type LATP powders with different sizes can be obtained. The electrochemical properties of PEO polymer electrolyte have been effectively enhanced by filling LATP nanoparticles. The composite electrolyte filled with 5 wt% LATP particles calcined at 850°C exhibits a high ionic conductivity of 5.24×10?4 S cm?1 at 55°C, which has a high electrochemical stability window of over 5 V versus Li/Li+ and a superior interfacial stability with Li metal. A LiFePO4/Li ASSLIB fabricated with the optimum composite electrolyte shows the excellent rate capability, and its discharge capacities at 0.2C, 0.5C, 1C, and 2C are 151.97, 151.56, 145.51, and 128.02 mAh·g?1. Moreover, the discharge capacity of the cell decreases from 151.69 to 130.53 mAh·g?1 after 100 charge-discharge cycles at 0.5C rate, and the corresponding capacity retention is 86.05%. These results demonstrate that LATP nanoparticles obtained via the solvent-thermal method are the alternative fillers for PEO polymer electrolyte. ? 2020 John Wiley & Sons Ltd