电解质
金属锂
阳极
环氧乙烷
锂(药物)
材料科学
电化学
阴极
聚合物
金属
聚合物电解质
氧化物
电化学窗口
电导率
离子电导率
离子键合
化学工程
准固态
快离子导体
电化学电池
枝晶(数学)
无机化学
固态
化学
离子
电极
复合材料
有机化学
冶金
共聚物
物理化学
内分泌学
工程类
医学
色素敏化染料
数学
几何学
作者
Ruyi Fang,Biyi Xu,Nicholas S. Grundish,Yang Xia,Yutao Li,Chengwei Lu,Yijie Liu,Nan Wu,John B. Goodenough
标识
DOI:10.1002/anie.202106039
摘要
Abstract The integration of Li 2 S 6 within a poly(ethylene oxide) (PEO)‐based polymer electrolyte is demonstrated to improve the polymer electrolyte's ionic conductivity because the strong interplay between O 2− (PEO) and Li + from Li 2 S 6 reduces the crystalline volume within the PEO. The Li/electrolyte interface is stabilized by the in situ formation of an ultra‐thin Li 2 S/Li 2 S 2 layer via the reaction between Li 2 S 6 and lithium metal, which increases the ionic transport at the interface and suppresses lithium dendrite growth. A symmetric Li/Li cell with the Li 2 S 6 ‐integrated composite electrolyte has excellent cyclability and a high critical current density of 0.9 mA cm −2 at 40 °C. Impressive electrochemical performance is demonstrated with all‐solid‐state Li/LiFePO 4 and high‐voltage Li/LiNi 0.8 Mn 0.1 Co 0.1 O 2 cells at 40 °C.
科研通智能强力驱动
Strongly Powered by AbleSci AI