All-solid-state sodium-ion batteries (ASSSIBs) are widely recognized as one of the most promising candidates for the next-generation of batteries, owing to their low cost and high safety. However, their commercialization progress has been impeded by interface problems, especially those related to the electrode/electrolyte interface. Thus, addressing the urgent problem of stabilizing the electrode/electrolyte interface for more stable operation is crucial. This review aims to comprehensively analyze in-depth the issues and solutions related to the electrode/electrolyte interface. Firstly, the fundamental requirement of the solid-state electrolyte (SSE) and the underlying mechanism of electrode/electrolyte interface problems are elucidated. Subsequently, the comprehensive analysis is conducted to identify the typical electrode/electrolyte interface problems and interface engineering methods based on the type of SSEs and electrodes. Finally, various suggestions and perspectives are propos
Transforming CO2 into valuable chemicals is an inevitable trend in our current society. Among the viable end-uses of CO2, fixing CO2 as carbon or carbonates via Li-CO2 chemistry could be an efficient approach, and promising achievements have been obtained in catalyst design in the past. Even so, the critical role of anions/solvents in the formation of a robust solid electrolyte interphase (SEI) layer on cathodes and the solvation structure have never been investigated. Herein, lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in two common solvents with various donor numbers (DN) have been introduced as ideal examples. The results indicate that the cells in dimethyl sulfoxide (DMSO)-based electrolytes with high DN possess a low proportion of solvent-separated ion pairs and contact ion pairs in electrolyte configuration, which are responsible for fast ion diffusion, high ionic conductivity, and small polarization. The 3 M DMSO cell delivered the lowest polarization of 1.3 V compared t
Batteries: Passivation Layer Mystery Solved miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.
This study is led by Prof. Dong Su (Institute of Physics, Chinese Academy of Sciences). Li ion imaging by transmission electron microscopy (TEM) is the “holy grail” in the study of Li ion battery (LIB) materials.