Hexafluorophosphate anion intercalation into graphite electrode from methyl propionate

被引：56
作者：
Fan, Hui [1 ,2 ]
Qi, Li [1 ]
Wang, Hongyu [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, 5625 Renmin St, Changchun 130022, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
SOLID STATE IONICS | 2017年 / 300卷
基金：
中国国家自然科学基金;
关键词：
Hexafluorophosphate anion; Dual-ion cells; Methyl propionate; Graphite intercalation compounds; Solvation co-intercalation; HIGHLY CONCENTRATED ELECTROLYTE; LI-ION BATTERIES; ELECTROCHEMICAL INTERCALATION; ETHYL-ACETATE; NONAQUEOUS ELECTROLYTES; IN-SITU; SOLVENT; CARBONATE; PROPANOATE; SOLVATION;
D O I：
10.1016/j.ssi.2016.12.032
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The electrochemical intercalation of hexafluorophosphate anion into a graphite positive electrode from methyl propionate (MP) has been investigated by conventional electrochemical techniques in conjunction with in situ Raman spectroscopy and ex situ X-ray diffraction. Graphite electrodes could deliver stable reversible specific capacities higher than 100 mAh g(-1), in MP-based solutions at room temperature. Furthermore, the storage/release of PF6- anion into/from graphite electrodes becomes facilitated in MP-based solutions at a very low temperature, as compared with Other solvents, such as propylene carbonate (PC) and ethyl methyl carbonate (EMC). The effect of LiPF6 concentration has also been addressed. The solvation states of the anion in the MP solutions were analyzed by nuclear magnetic resonance and infrared spectroscopy. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：169 / 174
页数：6
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