Effect of carbon dioxide additive on the characteristics of a deep eutectic solvent (DES) electrolyte for non-aqueous redox flow batteries

被引：22
作者：
Xu, Q. [1 ]
Ji, Y. N. [1 ,2 ]
Qin, L. Y. [1 ,2 ]
Leung, P. K. [3 ]
Shah, A. A. [4 ]
Li, Y. S. [5 ]
Su, H. N. [1 ]
Li, H. M. [1 ]
机构：
[1] Jiangsu Univ, Inst Energy Res, 301 Xuefu Rd, Zhenjiang 212013, Peoples R China
[2] Jiangsu Univ, Sch Energy & Power Engn, 301 Xuefu Rd, Zhenjiang 212013, Peoples R China
[3] Univ Oxford, Dept Mat, Oxford OX 3PH, England
[4] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England
[5] Beihang Univ, Sch Econ & Management, Beijing 100191, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2018年 / 708卷
基金：
中国博士后科学基金;
关键词：
deep eutectic solvent (DES); Iron ions redox couple; Redox flow battery; Gas additive; Physicochemical characteristics; IONIC LIQUIDS; RENEWABLE ENERGY; AQUEOUS MIXTURES; SOLUBILITY; PERFORMANCE; VISCOSITY; STORAGE; COUPLE; CO2;
D O I：
10.1016/j.cplett.2018.07.060
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 effects of CO2 on physical and electrochemical properties of deep eutectic solvent (DES) containing Fe (II)/Fe(III) redox couple were studied. At 25 degrees C, the viscosity of the DES decreased from 690.4 cP to 620 cP (10.1% decrease), and the ohmic resistance reduced from 1867 Omega to 1409 Omega (24.5% decrease) with saturated CO2. The magnitude of the changes reduces with the increase of temperature. Moreover, the cyclic voltammetry curve shows that the addition of CO2 has no remarkable influence on the reaction kinetics of redox couple in DES. The results reported here imply that CO2 has positive effects on the physicochemical characteristics of DES, while further studies are needed for being used in a DES electrolyte flow battery. (C) 2018 Elsevier B.V. All rights reserved.
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收藏
页码：48 / 53
页数：6
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