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Measurement and accurate prediction of surface tension for VOSO4-H2SO4-H2O ternary electrolyte system at high-concentration in vanadium redox flow batteries

文献类型：期刊论文

作者Qin, Ye1; Qi, Peixia1; Zhao, Jinling4; Li, Xiangrong3; Wang, Na1; Li, Qingpeng1; Ge, Jing2; Liu, Jianguo5; Yang, Jiazhen5; Yan, Chuanwei5
刊名JOURNAL OF MOLECULAR LIQUIDS
出版日期2022-11-01
卷号365页码:8
ISSN号0167-7322
关键词Vanadium redox flow battery Electrolyte Surface tension Vanadyl sulfate Molar surface Gibbs free energy Eotvos equation
DOI10.1016/j.molliq.2022.120079
通讯作者Qin, Ye(qinye@syuct.edu.cn) ; Li, Xiangrong(xrli@imr.ac.cn)
英文摘要Surface tension is an important thermodynamic parameter for vanadium redox flow battery (VRFB) however its related theoretical study for multicomponent systems containing sulfuric acid at high concentration is rare due to the complexity of ion interaction in the electrolyte. In this work, the surface tension and density of VOSO4-H2SO4-H2O electrolyte solution were firstly measured at different temperatures from 283.15 to 313.15 K over a wide range of solute concentration. The average molar volume (V) was calculated according to above experimental data, and then the new definition of molar surface Gibbs free energy (g(s)) and improved Eotvos equation for VOSO4-H2SO4-H2O ternary solution has been derived based on Li's theory. Simultaneously, several thermodynamic data of this ternary solution were obtained, such as the value of molar surface entropy, s, molar surface enthalpy, h, and Eotvos empirical parameter. In addition, the high-accuracy and semi-empirical equation was established to predict the surface tension of the VOSO4-H2SO4-H2O ternary solution based on the new g(s) definition. The results revealed that predicted values are in good agreement with the experimental values and correlation coefficient is 0.9993. This work provides basic data for mass transfer and heat transfer analysis of the VRFB and it also provides convenience for evaluating the interface effect between the electrolyte and other components when optimizing the composition of electrolyte and improving battery performance. (C) 2022 Elsevier B.V. All rights reserved.
资助项目Educa-tional Department of Liaoning Province, China[LZ2020002] ; Organization Department of Liaoning Province, China[XLYC2005002] ; Organization Department of Liaoning Province, China[XLYC2007157] ; Department of Science & Technology of Liaoning Province, China[2019JH3/30100012] ; Department of Science & Technology of Liaoning Province, China[2021JH1/10400091] ; Shenyang Bureau of Science & Tech-nology, Liaoning Province, China[20-202-1-15]
WOS研究方向Chemistry ; Physics
语种英语
出版者ELSEVIER
WOS记录号WOS:000861200200009
资助机构Educa-tional Department of Liaoning Province, China ; Organization Department of Liaoning Province, China ; Department of Science & Technology of Liaoning Province, China ; Shenyang Bureau of Science & Tech-nology, Liaoning Province, China
源URL[http://ir.imr.ac.cn/handle/321006/175975]  
专题金属研究所_中国科学院金属研究所
通讯作者Qin, Ye; Li, Xiangrong
作者单位1.Shenyang Univ Chem Technol, Shenyang 110142, Peoples R China
2.Shenyang Inst Ind Technol Co Ltd, Adv Coating Mat, Shenyang 110326, Peoples R China
3.Liaoning Univ, Light Ind Coll, Shenyang 110036, Peoples R China
4.Shenyang Kejin Adv Mat Co Ltd, Shenyang 110015, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Qin, Ye,Qi, Peixia,Zhao, Jinling,et al. Measurement and accurate prediction of surface tension for VOSO4-H2SO4-H2O ternary electrolyte system at high-concentration in vanadium redox flow batteries[J]. JOURNAL OF MOLECULAR LIQUIDS,2022,365:8.
APA Qin, Ye.,Qi, Peixia.,Zhao, Jinling.,Li, Xiangrong.,Wang, Na.,...&Yan, Chuanwei.(2022).Measurement and accurate prediction of surface tension for VOSO4-H2SO4-H2O ternary electrolyte system at high-concentration in vanadium redox flow batteries.JOURNAL OF MOLECULAR LIQUIDS,365,8.
MLA Qin, Ye,et al."Measurement and accurate prediction of surface tension for VOSO4-H2SO4-H2O ternary electrolyte system at high-concentration in vanadium redox flow batteries".JOURNAL OF MOLECULAR LIQUIDS 365(2022):8.

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来源：金属研究所

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