电解质
电化学
锂(药物)
氢氧化物
离子电导率
无机化学
离子液体
锂电池
材料科学
电池(电)
准固态
盐(化学)
层状双氢氧化物
离子键合
化学
化学工程
离子
电极
物理化学
有机化学
催化作用
功率(物理)
物理
内分泌学
医学
量子力学
色素敏化染料
工程类
作者
Zhijun Wu,Zhengkun Xie,Jing Wang,Tiantang Yu,Zhongde Wang,Xiaogang Hao,Abuliti Abudula,Guoqing Guan
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2020-07-28
卷期号:8 (33): 12378-12387
被引量:16
标识
DOI:10.1021/acssuschemeng.0c02362
摘要
Solid-state lithium batteries are highly promising for energy storage applications because of their high energy density and good safety. Herein, a novel solid electrolyte based on ionic-liquid-impregnated Li–Al layered double hydroxides (Li–IL@Li–Al LDH) is reported. Since the Li+ ions can be inserted into the vacant octahedral sites of the Li–Al LDH and the related anions intercalated into the interlayer for the charge balance, which can facilitate the transport of Li+ ions and avoid the interference of anions, the Li–IL@Li–Al LDH solid electrolyte with the optimized Li–IL/Li–Al LDH wight ratio of 2:1 exhibits a high ionic conductivity of 1.04 × 10–3 S·cm–1 with a Li+ transfer number of 0.35 at 40 °C. Moreover, this solid electrolyte demonstrates excellent nonflammability, good lithium stability, high electrochemical stability, and low interface resistance with electrodes. The fabricated LiFePO4/Li–IL@Li–Al LDH (2.0:1)/Li battery displays outstanding cyclability and rate capability at 40 °C, indicating that the Li–IL@Li–Al LDH SE should have great potential for applications in the solid-state lithium batteries.
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