Effect of hydrostatic pressure on the thermodynamic and kinetic behavior of metal electrode reactions

doi:10.1016/j.electacta.2022.140617

IMR OpenIR

	Effect of hydrostatic pressure on the thermodynamic and kinetic behavior of metal electrode reactions
	Ma, Rongyao 1; Shen, Yufeng 1,2; Wang, Changgang 1; Dong, Junhua 1; Ke, Wei 3
通讯作者	Wang, Changgang(cgwang@imr.ac.cn) ; Dong, Junhua(jhdong@imr.ac.cn)
	2022-08-20
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	424 页码:10
摘要	Based on the thermodynamic and dynamic theory of physical chemistry, focusing on the problem that hydrostatic pressure affects metal corrosion reaction in deep-sea environment, this paper analyzes the influence of hydrostatic pressure on partial molar volumes and activities of metals and components in deep-sea environment, deduces the relationship between hydrostatic pressure and equilibrium potential and exchange current density of different electrode reactions, and establishes a metal corrosion model under hydrostatic pressure. The results show that under the condition of ignoring the temperature change, hydrostatic pressure can change the partial molar volume and activity of metal and environmental components, and then affect the equilibrium potential and exchange current density of each electrode reaction in the corrosion process. With the increase of hydrostatic pressure, the equilibrium potential of anodic dissolution reaction of Fe, Al and Zn decreases, and the exchange current density decreases. Furthermore, it increases the equilibrium potential and decreases the exchange current density of cathodic reduction of dissolved oxygen, while it decreases equilibrium potential and increases the exchange current density of cathode hydrogen evolution reaction. Correspondingly, the corrosion potential and corrosion current density of different corrosion cells also change under the effect of hydrostatic pressure. In addition, hydrostatic pressure will amplify the activity difference of different phases in metal, which will correspondingly lead to the increase of the difference of electrode reaction equilibrium potential and exchange current density of different phases in metal, and then affect the micro galvanic corrosion between different phases.
关键词	Hydrostatic pressure Equilibrium electrode potential Exchange current density Thermodynamic Kinetic
资助者	Youth Innovation Pro-motion Association of the Chinese Academy of Sciences ; major R&D project of Liaoning Province
DOI	10.1016/j.electacta.2022.140617
收录类别	SCI
语种	英语
资助项目	Youth Innovation Pro-motion Association of the Chinese Academy of Sciences[2019193] ; major R&D project of Liaoning Province[2020JH1/10100001]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000809899400002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：5[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/321006/174369
专题	中国科学院金属研究所
通讯作者	Wang, Changgang; Dong, Junhua
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Environm Corros Ctr Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma, Rongyao,Shen, Yufeng,Wang, Changgang,et al. Effect of hydrostatic pressure on the thermodynamic and kinetic behavior of metal electrode reactions[J]. ELECTROCHIMICA ACTA,2022,424:10.
APA	Ma, Rongyao,Shen, Yufeng,Wang, Changgang,Dong, Junhua,&Ke, Wei.(2022).Effect of hydrostatic pressure on the thermodynamic and kinetic behavior of metal electrode reactions.ELECTROCHIMICA ACTA,424,10.
MLA	Ma, Rongyao,et al."Effect of hydrostatic pressure on the thermodynamic and kinetic behavior of metal electrode reactions".ELECTROCHIMICA ACTA 424(2022):10.