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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 S1; Xu J1,2; Li ZY(李正阳)3; Jiang SY4; Munroe Pl5; Xie ZH6,7; Lu H8
Corresponding AuthorXu, Jiang(xujiang73@nuaa.edu.cn)
Source PublicationCERAMICS INTERNATIONAL
2020-02-15
Volume46Issue:3Pages:2743-2757
ISSN0272-8842
AbstractTo 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.
KeywordProton exchange membrane fuel cell (PEMFC) Bipolar plate Titanium alloy TiSiN coating Corrosion resistance
DOI10.1016/j.ceramint.2019.09.263
Indexed BySCI ; EI
Language英语
WOS IDWOS:000508752000019
WOS KeywordELECTROCHEMICAL 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 Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
Funding ProjectGeneral 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]
Funding OrganizationGeneral 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
Classification一类
Ranking3
ContributorXu, Jiang
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81515
Collection先进制造工艺力学实验室
Affiliation1.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
Recommended Citation
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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