期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 166, 期 6, 页码 A1217-A1222出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.1171906jes
关键词
-
资金
- Shandong Provincial Natural Science Foundation (China) [ZR2017MB001]
- Independent Innovation Foundation of Shandong University
- Young Scholars Program of Shandong University [2016WLJH03]
- State Key Program of National Natural Science of China [61633015]
- 1000 Talent Plan program [31370086963030]
- National Natural Science Foundation of China [21371108]
- Project of the Taishan Scholar [ts201511004]
Potassium-ion batteries are now regarded as powerful competitors to lithium-ion batteries due to their merits of low-cost and abundant resource contrasted with state-of-art lithium ion batteries. However, the extremely flammable electrolytes may cause severe safety issues. Herein, we report an intrinsic non-flammable trimethyl phosphate-based potassium ion battery electrolyte. The problem of its poor electrochemical compatibility with graphite electrode is successful settled by using concentrated salt electrolyte. Graphite anode with high concentrated potassium bis(fluorosulfonyl) imide (KFSI)/trimethyl phosphate (TMP) electrolyte demonstrates high Coulombic efficiency and stable cyclability after 80 cycles. The performance enhancement mechanism is further probed via X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). The flame-retarding character of the concentrated electrolyte with stable electrochemical performance paves the way toward low cost and highly safe potassium ion batteries. (c) The Author(s) 2019. Published by ECS.
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。
推荐
暂无数据