期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 843, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.154915
关键词
Solid electrolyte; Al-doped; LiFePO4; Electrochemical performance; Diffusion rate
资金
- Shaanxi Province [2018GY-166, 2019TD-019]
- Xi'an Key Laboratory of Clean Energy [2019219914SYS014CG036]
- Natural Science Foundation of Xi'an [201805033YD11CG17(7)]
- Science Foundation of Shaanxi Provincial Department of Education [18JS058]
- Key Project of Shaanxi Provincial Education Department [17JS074]
A composite solid electrolyte based on Al-doped Li7-3xAlxLa3Zr2O12 (LALZO) was synthesized by the sol-gel method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) were used to characterize Li7La3Zr2O12 (LLZO) precursors with different Al doping concentrations. The results show that LLZO precursor doped with 0.4 mol% Al (LALZO-4) has high stability and good crystallinity. Further, this composite solid electrolyte was co-coated with carbon to optimize the LiFePO4 battery. Electrochemical performance tests show that the LiFePO4/C battery with 5% LALZO-4 precursor (LFP-5) exists in the form of uniformly dispersed spherical particles, and exhibits excellent cycling stability and high rate performance. In addition, the LALZO-4 coating layer can increase the diffusion rate by reducing the charge transfer resistance. (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据