A reactive-sputter-deposited TiSiN nanocomposite coating for the protection of metallic bipolar plates in proton exchange membrane fuel cells

doi:10.1016/j.ceramint.2019.09.263

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	A reactive-sputter-deposited TiSiN nanocomposite coating for the protection of metallic bipolar plates in proton exchange membrane fuel cells
	Peng S 1; Xu J 1,2; Li ZY(李正阳)3 ; Jiang SY 4; Munroe Pl 5; Xie ZH 6,7; Lu H 8
通讯作者	Xu, Jiang(xujiang73@nuaa.edu.cn)
发表期刊	CERAMICS INTERNATIONAL
	2020-02-15
卷号	46 期号:3 页码:2743-2757
ISSN	0272-8842
摘要	To meet the needs of corrosion resistance and electrically conductivity for metallic bipolar plates that are employed in proton exchange membrane fuel cells (PEMFCs), a TiSiN nanocomposite coating was fabricated on to a Ti-6Al-4V substrate using reactive sputter-deposition through the double cathode glow discharge plasma technique. The microstructure of the TiSiN coating comprised nanocrystallite TiN grains embedded in an amorphous Si3N4 matrix. Electrochemical measurements were employed to investigate the corrosion behavior of the TiSiN coating in the simulated operating environments of a PEMFC, specifically 0.5 M H2SO4 solution containing different HF concentrations (namely 2, 4 and 6 ppm) at 70 degrees C pumped with H-2 at the anode and air at the cathode. With increasing HF concentration, a higher corrosion current density and lower corrosion potential were observed from both the coating and the uncoated substrate, indicating that the addition of HF accelerated their corrosion rates under these conditions. Compared to the uncoated substrate, the TiSiN coating showed a markedly higher corrosion resistance at all HF concentrations. The passive film that formed on the TiSiN coating, with a resistance of the order of magnitude of similar to 10(7) Omega cm(2), displayed good electrochemical stability and was less affected by changes in HF concentration. For the TiSiN coating, the values of interfacial contact resistance (101) were 14.7 m Omega cm(-2) and 18.3 m Omega cm(-2), respectively, before and after 2.5 h potentiostatic polarization with 6 ppm HF under cathodic conditions under a compaction pressure of 140 N cm(-2). Both values are much lower than those for the bare substrate. Moreover, the TiSiN coating was shown to improve the hydrophobicity of Ti-6Al-4V that would help facilitate water management in the PEMFC operating environment. This coating, which exhibited excellent corrosion resistance, electro-conductivity and hydrophobicity, is therefore a promising material for protecting metallic bipolar plates from corrosive attack.
关键词	Proton exchange membrane fuel cell (PEMFC) Bipolar plate Titanium alloy TiSiN coating Corrosion resistance
DOI	10.1016/j.ceramint.2019.09.263
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000508752000019
关键词[WOS]	ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY ; INTERFACIAL CONTACT RESISTANCE ; NACL AQUEOUS-SOLUTION ; 316L STAINLESS-STEEL ; PVD COATED STEELS ; MECHANICAL-PROPERTIES ; CORROSION BEHAVIOR ; TITANIUM NITRIDE ; CRN COATINGS ; MILD-STEEL
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
资助项目	General Program of the National Natural Science Foundation of China[51675267] ; Key Program of the National Natural Science Foundation of China[51635004] ; Australian Research Council through the Discovery Projects program[DP150102417]
项目资助者	General Program of the National Natural Science Foundation of China ; Key Program of the National Natural Science Foundation of China ; Australian Research Council through the Discovery Projects program
论文分区	一类
力学所作者排名	3
RpAuthor	Xu, Jiang
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81515
专题	先进制造工艺力学实验室
作者单位	1.Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Peoples R China; 2.Wuhan Inst Technol, Sch Mech & Elect Engn, 693 Xiongchu Ave, Wuhan 430073, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 4.Southeast Univ, Dept Mech Engn, 2 Si Pai Lou, Nanjing 210096, Peoples R China; 5.UNSW Sydney, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia; 6.Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia; 7.Edith Cowan Univ, Sch Engn, Perth, WA 6027, Australia; 8.Xin Jiang Yihe Biol Co Ltd, Regiment Headquarters Crops 66, Cocodala 835219, Peoples R China
推荐引用方式 GB/T 7714	Peng S,Xu J,Li ZY,et al. A reactive-sputter-deposited TiSiN nanocomposite coating for the protection of metallic bipolar plates in proton exchange membrane fuel cells[J]. CERAMICS INTERNATIONAL,2020,46,3,:2743-2757.
APA	Peng S.,Xu J.,李正阳.,Jiang SY.,Munroe Pl.,...&Lu H.(2020).A reactive-sputter-deposited TiSiN nanocomposite coating for the protection of metallic bipolar plates in proton exchange membrane fuel cells.CERAMICS INTERNATIONAL,46(3),2743-2757.
MLA	Peng S,et al."A reactive-sputter-deposited TiSiN nanocomposite coating for the protection of metallic bipolar plates in proton exchange membrane fuel cells".CERAMICS INTERNATIONAL 46.3(2020):2743-2757.

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