Intercalation of multiply solvated hexafluorophospate anion into graphite electrode from mixtures of methyl acetate, ethyl methyl and ethylene carbonates

• 作者: Lei Zhang Hongyu Wang
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（7）
• 页码范围: 233-236
• 页数: 4页
• 语种: 英文

摘要

Graphite is a universal host material for ion intercalation.Li+-graphite intercalation compounds (GICs) have been successfully utilized as the anode material in commercial lithium-ion batteries.Similarly, anion-graphite intercalation compounds (AGICs) have been coming into their own in dual-ion batteries [1].It is imperative to deepen an understanding of anion storage mechanisms in graphite electrode.In our previous studies on anion intercalation from traditional organic electrolyte solutions, it was found that different solvent shells attached to the same anion render discrete storage behaviors [2-4], which dramatically diversify the electrochemical performance of graphite electrode.In most of these cases,the co-intercalation of single solvent specie together with anion into graphite electrode was always witnessed [5-8], even for some solutions containing two kinds of solvents [9-16].It was only recently that the co-intercalation of anion with two solvent speciesinto graphite electrode began to attract our attention [17-21].