Enhanced Lithium Ion Storage Performance of Tannic Acid in LiTFSI Electrolyte

Zheng Xu; Haijun Ye; Hongqin Li; Yazhou Xu; Chuanyi Wang; Jiao Yin; Hui Zhu

doi:10.1021/acsomega.6b00504

Enhanced Lithium Ion Storage Performance of Tannic Acid in LiTFSI Electrolyte

ACS Omega. 2017 Apr 4;2(4):1273-1278. doi: 10.1021/acsomega.6b00504. eCollection 2017 Apr 30.

Authors

Zheng Xu¹, Haijun Ye¹, Hongqin Li¹, Yazhou Xu¹, Chuanyi Wang², Jiao Yin², Hui Zhu^{1

3}

Affiliations

¹ College of Chemistry, Jiangxi Provincial Key Laboratory of New Energy Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
² Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Road, Urumqi, Xinjiang 830011, China.
³ State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625, Renmin Street, Changchun 130022, China.

Abstract

In this article, tannic acid (TA), as an earth-abundant natural polymer, has been creatively proposed as a desirable organic anode material for lithium ion batteries (LIBs). Most importantly, it has been observed that the substitution of different concentrations of lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) for lithium hexafluorophosphate (LiPF₆) can significantly restrain the dissolution of TA. This fact implies that LiTFSI, especially at high concentrations, is beneficial to accelerate electrochemical kinetics, enlarge the specific capacity, improve the rate performance, and prolong the cycling life for organic LIBs.