Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel Cell
For improving the corrosion resistance and surface conductibility of stainless steel bipolar plates, a Ni/Cr - C coating was prepared on the surface of 304 stainless steel by nickel preplating and trivalent chromium plating. The performance of coatings was characterized by FE - SEM, EDS, XPS, XRD an...
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Editorial Department of Materials Protection
2021-05-01
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| Series: | Cailiao Baohu |
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| Online Access: | http://www.mat-pro.com/fileup/1001-1560/PDF/20210513.pdf |
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| author | ZHANG Yan - na, WANG Li - da, SUN Wen, LI Rui, HE Yong - peng, SHU Xiang - quan, LIU Gui - chang |
| author_facet | ZHANG Yan - na, WANG Li - da, SUN Wen, LI Rui, HE Yong - peng, SHU Xiang - quan, LIU Gui - chang |
| author_sort | ZHANG Yan - na, WANG Li - da, SUN Wen, LI Rui, HE Yong - peng, SHU Xiang - quan, LIU Gui - chang |
| collection | DOAJ |
| description | For improving the corrosion resistance and surface conductibility of stainless steel bipolar plates, a Ni/Cr - C coating was prepared on the surface of 304 stainless steel by nickel preplating and trivalent chromium plating. The performance of coatings was characterized by FE - SEM, EDS, XPS, XRD and contact angle measurement. Results showed that at the deposition potential of -1.8 V(vs SCE), the Cr - C coating prepared from trivalent chromium plating bath was an amorphous coating without obvious micro - defects, and the water contact angle of the coating was 92.6°, indicating that the coating had a certain degree of hydrophobicity. The potentiodynamic test was performed at 70 ℃ in a simulated environment (0.5 mol/L H2SO4 + 2 mg/L HF), indicating that the corrosion current density of the stainless steel bipolar plate after the modification of the amorphous Cr - C coating was 0.8 μA/cm2, which was about 2 orders of magnitude lower than that of the original 304 stainless steel substrate. Meanwhile, the contact resistance of stainless steel bioplar plate was 4.5 mΩ·cm2 at a pressure of 140 N/cm2, and the conductivity was significantly improved. |
| format | Article |
| id | doaj-art-127b1eced44a414e962b74f83bf54d7d |
| institution | Kabale University |
| issn | 1001-1560 |
| language | zho |
| publishDate | 2021-05-01 |
| publisher | Editorial Department of Materials Protection |
| record_format | Article |
| series | Cailiao Baohu |
| spelling | doaj-art-127b1eced44a414e962b74f83bf54d7d2025-08-20T03:28:29ZzhoEditorial Department of Materials ProtectionCailiao Baohu1001-15602021-05-01545727710.16577/j.cnki.42-1215/tb.2021.05.013Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel CellZHANG Yan - na, WANG Li - da, SUN Wen, LI Rui, HE Yong - peng, SHU Xiang - quan, LIU Gui - chang0(1. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China；2. Shandong Chambroad Petrochemicals Co., Ltd., Binzhou 256500, China)For improving the corrosion resistance and surface conductibility of stainless steel bipolar plates, a Ni/Cr - C coating was prepared on the surface of 304 stainless steel by nickel preplating and trivalent chromium plating. The performance of coatings was characterized by FE - SEM, EDS, XPS, XRD and contact angle measurement. Results showed that at the deposition potential of -1.8 V(vs SCE), the Cr - C coating prepared from trivalent chromium plating bath was an amorphous coating without obvious micro - defects, and the water contact angle of the coating was 92.6°, indicating that the coating had a certain degree of hydrophobicity. The potentiodynamic test was performed at 70 ℃ in a simulated environment (0.5 mol/L H2SO4 + 2 mg/L HF), indicating that the corrosion current density of the stainless steel bipolar plate after the modification of the amorphous Cr - C coating was 0.8 μA/cm2, which was about 2 orders of magnitude lower than that of the original 304 stainless steel substrate. Meanwhile, the contact resistance of stainless steel bioplar plate was 4.5 mΩ·cm2 at a pressure of 140 N/cm2, and the conductivity was significantly improved.http://www.mat-pro.com/fileup/1001-1560/PDF/20210513.pdffuel cell; stainless steel bioplar plates; trivalent chromium; cr - c coating; corrosion resistance; contact resistance |
| spellingShingle | ZHANG Yan - na, WANG Li - da, SUN Wen, LI Rui, HE Yong - peng, SHU Xiang - quan, LIU Gui - chang Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel Cell Cailiao Baohu fuel cell; stainless steel bioplar plates; trivalent chromium; cr - c coating; corrosion resistance; contact resistance |
| title | Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel Cell |
| title_full | Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel Cell |
| title_fullStr | Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel Cell |
| title_full_unstemmed | Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel Cell |
| title_short | Preparation and Performance of Ni/Cr - C Coating on Stainless Steel Bipolar Plate of Fuel Cell |
| title_sort | preparation and performance of ni cr c coating on stainless steel bipolar plate of fuel cell |
| topic | fuel cell; stainless steel bioplar plates; trivalent chromium; cr - c coating; corrosion resistance; contact resistance |
| url | http://www.mat-pro.com/fileup/1001-1560/PDF/20210513.pdf |
| work_keys_str_mv | AT zhangyannawanglidasunwenliruiheyongpengshuxiangquanliuguichang preparationandperformanceofnicrccoatingonstainlesssteelbipolarplateoffuelcell |