4.6 Article

A novel boron-based ionic liquid electrolyte for high voltage lithium-ion batteries with outstanding cycling stability

期刊

ELECTROCHIMICA ACTA
卷 283, 期 -, 页码 111-120

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.06.170

关键词

Lithium ion battery; Boron-based ionic liquid; Al corrosion; High voltage; Spinel LiNi0.5Mn1.5O4

资金

  1. National Natural Science Foundation [51574166]
  2. Scientific and Technological Research and Development Foundation of Shenzhen City [JCYJ20160301145911673, JCYJ20170818093517263]

向作者/读者索取更多资源

Advanced ionic liquid-based electrolyte is herein characterized for the application in high voltage lithium-ion batteries. The electrolyte based on N-propyl-N-methylpiperidiniumdifluoro(oxalate)borate (PP13DFOB), lithium bis(trifluoromethanesulfonyl)-imide (LiTFSI) and dimethyl carbonate (DMC) is fully characterized in terms of anodic corrosion behavior, electrochemical properties and cathode-electrolyte interphase stability. Experimental and computational results show that the preferential oxidation of PP13DFOB results in a stable and low impedance solid electrolyte interface (SEI) film on the surface of LiNi0.5Mn1.5O4 (LNMO) cathode and a passivation layer on Al foil, which suppress transition metal dissolution and Al corrosion at high voltage. As a result, the Li/LNMO and Li/graphite coin cells with ionic liquid-based electrolyte achieve excellent electrochemical performance, displaying a discharge capacity of 121.2 mAh g(-1) and 369.2 mAh g(-1) after 100 cycles at 0.5 C respectively and demonstrating no distinct capacitance attenuation during charge-discharge cycles. (C) 2018 Published by Elsevier Ltd.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据