Corrosion and conductivity properties of Ni-P/Ti4O7 coating on carbon steel as bipolar plates for proton exchange membrane fuel cells

doi:10.1108/ACMM-03-2022-2635

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	Corrosion and conductivity properties of Ni-P/Ti4O7 coating on carbon steel as bipolar plates for proton exchange membrane fuel cells
	Yu, Haiqiang 2,3; Guo, Quanzhong 3; Du, Keqin 3; Lz, Dongyun 1,3; Wang, Chuan 3; Wang, Yong 3
刊名	ANTI-CORROSION METHODS AND MATERIALS
	2022-07-08
页码	9
关键词	Bipolar plates Ni-P Ti4O7 coating Corrosion resistance Interfacial contact resistance
ISSN号	0003-5599
DOI	10.1108/ACMM-03-2022-2635
通讯作者	Du, Keqin(kqdu@imr.ac.cn)
英文摘要	Purpose The purpose of this paper is to investigate the interfacial conductivity and corrosion resistance of the Ni-P/Ti4O7 composite coating that is deposited on a carbon steel substrate as bipolar plates for proton exchange membrane fuel cells. Design/methodology/approach The Ni-P/Ti4O7 coating was prepared by electroless plating. Scanning electron microscopy, white light interference, energy dispersive spectrometry and X-ray diffraction were used, respectively, to study the surface morphology, chemical composition and phase composition of coated samples. Electrochemical impedance spectroscopy, potentiodynamic and potentiostatic polarization were used to test the electrochemical performance and corrosion behavior. The interfacial contact resistance (ICR) was measured via the standard method. Findings The surface of the Ni-P/Ti4O7 coating is complete and dense and without obvious defects. The electrochemical test results show that the Ni-P/Ti4O7 coating provides better corrosion resistance than the Ni-P coating and substrate. Compared with the Ni-P coating, the ICR of the Ni-P/Ti4O7 coating is lower by about 82.7%. This is because the coating has more conductive contact points. The more exciting thing is that the ICR of the Ni-P/Ti4O7 coating only increases to 12.38 m omega center dot cm(2) after 5 h of polarization. Originality/value This paper provides a method for achieving surface modification of metal bipolar plates. Introducing Ti4O7 particles in the Ni-P layer reduces the contact resistance before and after polarization while ensuring good corrosion resistance.
资助项目	[2022JH6/100100003]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	EMERALD GROUP PUBLISHING LTD
WOS记录号	WOS:000820960500001
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174828]
专题	金属研究所_中国科学院金属研究所
通讯作者	Du, Keqin
作者单位	1.Univ Sci & Technol China, Hefei, Peoples R China 2.Univ Sci & Technol China, Coll Mat Sci & Engn, Hefei, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Yu, Haiqiang,Guo, Quanzhong,Du, Keqin,et al. Corrosion and conductivity properties of Ni-P/Ti4O7 coating on carbon steel as bipolar plates for proton exchange membrane fuel cells[J]. ANTI-CORROSION METHODS AND MATERIALS,2022:9.
APA	Yu, Haiqiang,Guo, Quanzhong,Du, Keqin,Lz, Dongyun,Wang, Chuan,&Wang, Yong.(2022).Corrosion and conductivity properties of Ni-P/Ti4O7 coating on carbon steel as bipolar plates for proton exchange membrane fuel cells.ANTI-CORROSION METHODS AND MATERIALS,9.
MLA	Yu, Haiqiang,et al."Corrosion and conductivity properties of Ni-P/Ti4O7 coating on carbon steel as bipolar plates for proton exchange membrane fuel cells".ANTI-CORROSION METHODS AND MATERIALS (2022):9.