Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar Plates
To improve corrosion resistance and electronic conductivity of bipolar plates for proton exchange membrane fuel cell (PEMFC), coatings of TiNb and TiNbN on 316L stainless steel (SS) were prepared by magnetron sputtering. X-ray diffraction (XRD) measurements confirmed the existence of metallic nitrid...
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MDPI AG
2019-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/12/2568 |
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| author | Kun Shi Xue Li Yang Zhao Wei-Wei Li Shu-Bo Wang Xiao-Feng Xie Li Yao Jens Oluf Jensen Qing-Feng Li |
| author_facet | Kun Shi Xue Li Yang Zhao Wei-Wei Li Shu-Bo Wang Xiao-Feng Xie Li Yao Jens Oluf Jensen Qing-Feng Li |
| author_sort | Kun Shi |
| collection | DOAJ |
| description | To improve corrosion resistance and electronic conductivity of bipolar plates for proton exchange membrane fuel cell (PEMFC), coatings of TiNb and TiNbN on 316L stainless steel (SS) were prepared by magnetron sputtering. X-ray diffraction (XRD) measurements confirmed the existence of metallic nitrides in the TiNbN coating. Scanning electron microscope (SEM) tests showed that the deposited coatings provided smooth surfaces. Further electrochemical measurements indicated that the corrosion resistance of TiNb coating was significantly higher than that of substrate. At 0.19 V vs MSE, the long-term stabilized current density of TiNb/316L SS was lower than 1 μA·cm<sup>−2</sup>. The interfacial contact resistance (ICR) values between coating and carbon paper suggested that TiNb and TiNbN films had better contact conductivity than 316L SS substrate. In conclusion, TiNb coated 316L SS metallic bipolar plate material is a promising option for PEMFC. |
| first_indexed | 2024-12-20T20:07:02Z |
| format | Article |
| id | doaj.art-b4c9b2cc84024fcebaba0348358a662a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-20T20:07:02Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-b4c9b2cc84024fcebaba0348358a662a2022-12-21T19:27:55ZengMDPI AGApplied Sciences2076-34172019-06-01912256810.3390/app9122568app9122568Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar PlatesKun Shi0Xue Li1Yang Zhao2Wei-Wei Li3Shu-Bo Wang4Xiao-Feng Xie5Li Yao6Jens Oluf Jensen7Qing-Feng Li8Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, ChinaAdvanced Technology Department, SAIC Motor Corporation Limited, Shanghai 201804, ChinaDepartment of Energy Conversion and Storage, Technical University of Denmark, 2800 Lyngby, DenmarkDepartment of Energy Conversion and Storage, Technical University of Denmark, 2800 Lyngby, DenmarkTo improve corrosion resistance and electronic conductivity of bipolar plates for proton exchange membrane fuel cell (PEMFC), coatings of TiNb and TiNbN on 316L stainless steel (SS) were prepared by magnetron sputtering. X-ray diffraction (XRD) measurements confirmed the existence of metallic nitrides in the TiNbN coating. Scanning electron microscope (SEM) tests showed that the deposited coatings provided smooth surfaces. Further electrochemical measurements indicated that the corrosion resistance of TiNb coating was significantly higher than that of substrate. At 0.19 V vs MSE, the long-term stabilized current density of TiNb/316L SS was lower than 1 μA·cm<sup>−2</sup>. The interfacial contact resistance (ICR) values between coating and carbon paper suggested that TiNb and TiNbN films had better contact conductivity than 316L SS substrate. In conclusion, TiNb coated 316L SS metallic bipolar plate material is a promising option for PEMFC.https://www.mdpi.com/2076-3417/9/12/2568coatingmetallic bipolar platePEMFCTiNbTiNbN |
| spellingShingle | Kun Shi Xue Li Yang Zhao Wei-Wei Li Shu-Bo Wang Xiao-Feng Xie Li Yao Jens Oluf Jensen Qing-Feng Li Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar Plates Applied Sciences coating metallic bipolar plate PEMFC TiNb TiNbN |
| title | Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar Plates |
| title_full | Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar Plates |
| title_fullStr | Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar Plates |
| title_full_unstemmed | Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar Plates |
| title_short | Corrosion Behavior and Conductivity of TiNb and TiNbN Coated Steel for Metallic Bipolar Plates |
| title_sort | corrosion behavior and conductivity of tinb and tinbn coated steel for metallic bipolar plates |
| topic | coating metallic bipolar plate PEMFC TiNb TiNbN |
| url | https://www.mdpi.com/2076-3417/9/12/2568 |
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