电解质
材料科学
离子电导率
电导率
硫化物
化学工程
锂(药物)
离子键合
快离子导体
兴奋剂
无机化学
电池(电)
电极
离子
热力学
物理化学
冶金
有机化学
化学
内分泌学
功率(物理)
工程类
物理
医学
光电子学
作者
Zhao Jiang,Hongling Peng,Yu Liu,Zhongxu Li,Yu Zhong,Xiuli Wang,Xinhui Xia,Changdong Gu,J.P. Tu
标识
DOI:10.1002/aenm.202101521
摘要
Abstract Sulfide solid electrolytes (SSEs) have captured plentiful interest on account of their high ionic conductivity and appropriate mechanical strength. However, the poor air stability and cost‐intensive preparation process of SSEs limit their applications. Herein, a novel ultimate‐energy mechanical alloying (UEMA) approach is applied to rapidly synthesize the argyrodite‐type electrolytes in a one‐pot process. According to the hard‐soft‐acid‐base theory and the first‐principles density functional theory (DFT) calculation, In‐doping in Li 6 PS 5 I is attempted to enhance air stability and the experimental results demonstrate the success of this approach. The synthesized Li 6.5 In 0.25 P 0.75 S 5 I electrolyte has a high ionic conductivity (1.06 mS cm –1 ), and also presents excellent interfacial stability against Li metal, benefiting from the formation of a LiI‐rich interphase layer. The assembled Li–S battery with Li 6.5 In 0.25 P 0.75 S 5 I as an interlayer delivers a high discharge capacity (954 mAh g –1 ) and presents the capacity retention of 96% after 200 cycles. The In‐doped Li 6 PS 5 I is a novel promising electrolyte with high air stability and ionic conductivity for the application of all‐solid‐state lithium metal batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI