Thermodynamic Investigation of Electrolytes of the Vanadium Redox Flow Battery (V): Conductivity and Ionic Dissociation of Vanadyl Sulfate in Aqueous Solution in the 278.15-318.15 K Temperature Range

IMR OpenIR

	Thermodynamic Investigation of Electrolytes of the Vanadium Redox Flow Battery (V): Conductivity and Ionic Dissociation of Vanadyl Sulfate in Aqueous Solution in the 278.15-318.15 K Temperature Range
	Li, XR; Qin, Y; Xu, WG; Liu, JG; Yang, JZ; Xu, Q; Yan, CW; Qin, Y (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2016-12-01
发表期刊	JOURNAL OF SOLUTION CHEMISTRY
ISSN	0095-9782
卷号	45 期号:12 页码:1879-1889
摘要	Precise measurements of electrical conductivities of aqueous VOSO4 solutions at various molalities were performed from 278.15 to 318.15 K in 5 K intervals. In terms of Fuoss's equation and Shedlovsky's equation, the limiting molar conductance, I > (0), and the dissociation constant, K (d), of the ion-pair [VOSO4](0) were determined. From an empirical equation for the temperature dependence of dissociation constants, the thermodynamic functions for the dissociation process of the ion-pair [VOSO4](0) were calculated. It is discovered that the reaction for ion-pair dissociation is unfavorable under normal pressure and room temperature because the standard state dissociation Gibbs energy (Delta G (0)) > 0. The calculated values of the dissociation entropy and the dissociation enthalpy are negative, indicating that the dissociation entropy opposes the dissociation process.
部门归属	[li, xiang-rong] northeastern univ, sch met, shenyang 110819, peoples r china ; [li, xiang-rong ; qin, ye ; xu, wei-guo ; liu, jian-guo ; yang, jia-zhen ; yan, chuan-wei] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [xu, wei-guo ; yang, jia-zhen] liaoning univ, coll chem, shenyang 110036, peoples r china ; [xu, qian] shanghai univ, state key lab adv special steel, shanghai 200072, peoples r china
关键词	Vanadium Redox Flow Battery Ion Pair Dissociation Constant Conductivity Dissociation Entropy Vanadyl Sulfate
学科领域	Chemistry, Physical
资助者	National Nature Science Foundation of China [21373009, 21573257]
收录类别	sci
语种	英语
WOS记录号	WOS:000388183300016
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/76164
专题	中国科学院金属研究所
通讯作者	Qin, Y (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Li, XR,Qin, Y,Xu, WG,et al. Thermodynamic Investigation of Electrolytes of the Vanadium Redox Flow Battery (V): Conductivity and Ionic Dissociation of Vanadyl Sulfate in Aqueous Solution in the 278.15-318.15 K Temperature Range[J]. JOURNAL OF SOLUTION CHEMISTRY,2016,45(12):1879-1889.
APA	Li, XR.,Qin, Y.,Xu, WG.,Liu, JG.,Yang, JZ.,...&Qin, Y .(2016).Thermodynamic Investigation of Electrolytes of the Vanadium Redox Flow Battery (V): Conductivity and Ionic Dissociation of Vanadyl Sulfate in Aqueous Solution in the 278.15-318.15 K Temperature Range.JOURNAL OF SOLUTION CHEMISTRY,45(12),1879-1889.
MLA	Li, XR,et al."Thermodynamic Investigation of Electrolytes of the Vanadium Redox Flow Battery (V): Conductivity and Ionic Dissociation of Vanadyl Sulfate in Aqueous Solution in the 278.15-318.15 K Temperature Range".JOURNAL OF SOLUTION CHEMISTRY 45.12(2016):1879-1889.