歧化
锂(药物)
电解质
材料科学
电池(电)
无机化学
化学工程
电化学
化学
热力学
物理
有机化学
物理化学
电极
工程类
功率(物理)
催化作用
内分泌学
医学
作者
Piotr Jankowski,Rasmus Andersson,Patrik Johansson
标识
DOI:10.1002/batt.202000189
摘要
Abstract Highly concentrated electrolytes (HCEs) based on glymes, such as tetraglyme (G4), are currently the focus of much battery research, primarily due to their unique properties – especially with respect to ion transport and electrochemical stability. While the LiTFSI‐G4 and LiTDI‐G4 systems both have been studied extensively, we here design their hybrid electrolytes to answer; will the resulting properties be averages/superpositions or will there be synergies created? We find the latter to be true and demonstrate that the most performant electrolytes are obtained by introducing a minor amount of LiTDI to an LiTFSI based electrolyte, which promotes the disproportionation and formation of “free” cations and at the same to avoid large aggregates – shown comprehensively both experimentally and by different modelling approaches and analyses combined. This electrolyte composition strategy can be generalized to other salts and solvents and thus a route towards a flora of novel battery electrolytes is here suggested.
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