锂(药物)
电解质
无机化学
电化学
电导率
离子
盐(化学)
化学
离子电导率
酰亚胺
离子液体
氢
聚合物
材料科学
高分子化学
有机化学
电极
物理化学
催化作用
医学
内分泌学
作者
Heng Zhang,Uxue Oteo,Haijin Zhu,Xabier Judez,Maria Martinez-Ibañez,Itziar Aldalur,Eduardo Sanchez-Diez,Chunmei Li,Javier Carrasco,Maria Forsyth,Michel Armand
标识
DOI:10.1002/anie.201813700
摘要
The anion chemistry of lithium salts plays a pivotal role in dictating the physicochemical and electrochemical performance of solid polymer electrolytes (SPEs), thus affecting the cyclability of all-solid-state lithium metal batteries (ASSLMBs). The bis(trifluoromethanesulfonyl)imide anion (TFSI- ) has long been studied as the most promising candidate for SPEs; however, the Li-ion conductivities of the TFSI-based SPEs still remain low (Li-ion transference number: ca. 0.2). In this work, we report new hydrogen-containing anions, conceived based on theoretical considerations, as an electrolyte salt for SPEs. SPEs comprising hydrogen-containing anions achieve higher Li-ion conductivities than TFSI-based ones, and those anions are electrochemically stable for various kinds of ASSLMBs (Li-LiFePO4 , Li-S, and Li-O2 batteries). This opens up a new avenue for designing safe and high-performance ASSLMBs in the future.
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