Corrosion behavior and conductivity of TiNb and TiNbN Coated Steel For Metallic Bipolar Plates

Kun Shi, Xue Li, Yang Zhao, Wei Wei Li, Shu Bo Wang*, Xiao Feng Xie, Li Yao, Jens Oluf Jensen, Qing Feng Li

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

To improve corrosion resistance and electronic conductivity of bipolar plates for proton exchange membrane fuel cells (PEMFC), coatings of TiNb and TiNbN on 316L stainless steel (SS) were prepared by magnetron sputtering. X-ray diffraction measurements confirmed the existence of metallic nitrides in the TiNbN coating. Scanning electron microscope tests showed that the deposited coatings provided smooth surfaces. Further electrochemical measurements indicated that the corrosion resistance of the TiNb coating was significantly higher than that of the substrate. At 0.19 V vs MSE, the long-term stabilized current density of TiNb/316L SS was lower than 1 μA·cm-2. The interfacial contact resistance values between coating and carbon paper suggested that TiNb and TiNbN films had better contact conductivity than the 316L SS substrate. In conclusion, TiNb coated 316L SS metallic bipolar plate material is a promising option for PEMFC.
Original languageEnglish
Article number2568
JournalApplied Sciences (switzerland)
Volume9
Issue number12
Number of pages12
ISSN2076-3417
DOIs
Publication statusPublished - 2019

Keywords

  • Coating
  • Metallic bipolar plate
  • PEMFC
  • TiNb
  • TiNbN

Cite this

Shi, Kun ; Li, Xue ; Zhao, Yang ; Li, Wei Wei ; Wang, Shu Bo ; Xie, Xiao Feng ; Yao, Li ; Jensen, Jens Oluf ; Li, Qing Feng. / Corrosion behavior and conductivity of TiNb and TiNbN Coated Steel For Metallic Bipolar Plates. In: Applied Sciences (switzerland). 2019 ; Vol. 9, No. 12.
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title = "Corrosion behavior and conductivity of TiNb and TiNbN Coated Steel For Metallic Bipolar Plates",
abstract = "To improve corrosion resistance and electronic conductivity of bipolar plates for proton exchange membrane fuel cells (PEMFC), coatings of TiNb and TiNbN on 316L stainless steel (SS) were prepared by magnetron sputtering. X-ray diffraction measurements confirmed the existence of metallic nitrides in the TiNbN coating. Scanning electron microscope tests showed that the deposited coatings provided smooth surfaces. Further electrochemical measurements indicated that the corrosion resistance of the TiNb coating was significantly higher than that of the substrate. At 0.19 V vs MSE, the long-term stabilized current density of TiNb/316L SS was lower than 1 μA·cm-2. The interfacial contact resistance values between coating and carbon paper suggested that TiNb and TiNbN films had better contact conductivity than the 316L SS substrate. In conclusion, TiNb coated 316L SS metallic bipolar plate material is a promising option for PEMFC.",
keywords = "Coating, Metallic bipolar plate, PEMFC, TiNb, TiNbN",
author = "Kun Shi and Xue Li and Yang Zhao and Li, {Wei Wei} and Wang, {Shu Bo} and Xie, {Xiao Feng} and Li Yao and Jensen, {Jens Oluf} and Li, {Qing Feng}",
year = "2019",
doi = "10.3390/app9122568",
language = "English",
volume = "9",
journal = "Applied Sciences",
issn = "2076-3417",
publisher = "MDPI AG",
number = "12",

}

Corrosion behavior and conductivity of TiNb and TiNbN Coated Steel For Metallic Bipolar Plates. / Shi, Kun; Li, Xue; Zhao, Yang; Li, Wei Wei; Wang, Shu Bo; Xie, Xiao Feng; Yao, Li; Jensen, Jens Oluf; Li, Qing Feng.

In: Applied Sciences (switzerland), Vol. 9, No. 12, 2568, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Corrosion behavior and conductivity of TiNb and TiNbN Coated Steel For Metallic Bipolar Plates

AU - Shi, Kun

AU - Li, Xue

AU - Zhao, Yang

AU - Li, Wei Wei

AU - Wang, Shu Bo

AU - Xie, Xiao Feng

AU - Yao, Li

AU - Jensen, Jens Oluf

AU - Li, Qing Feng

PY - 2019

Y1 - 2019

N2 - To improve corrosion resistance and electronic conductivity of bipolar plates for proton exchange membrane fuel cells (PEMFC), coatings of TiNb and TiNbN on 316L stainless steel (SS) were prepared by magnetron sputtering. X-ray diffraction measurements confirmed the existence of metallic nitrides in the TiNbN coating. Scanning electron microscope tests showed that the deposited coatings provided smooth surfaces. Further electrochemical measurements indicated that the corrosion resistance of the TiNb coating was significantly higher than that of the substrate. At 0.19 V vs MSE, the long-term stabilized current density of TiNb/316L SS was lower than 1 μA·cm-2. The interfacial contact resistance values between coating and carbon paper suggested that TiNb and TiNbN films had better contact conductivity than the 316L SS substrate. In conclusion, TiNb coated 316L SS metallic bipolar plate material is a promising option for PEMFC.

AB - To improve corrosion resistance and electronic conductivity of bipolar plates for proton exchange membrane fuel cells (PEMFC), coatings of TiNb and TiNbN on 316L stainless steel (SS) were prepared by magnetron sputtering. X-ray diffraction measurements confirmed the existence of metallic nitrides in the TiNbN coating. Scanning electron microscope tests showed that the deposited coatings provided smooth surfaces. Further electrochemical measurements indicated that the corrosion resistance of the TiNb coating was significantly higher than that of the substrate. At 0.19 V vs MSE, the long-term stabilized current density of TiNb/316L SS was lower than 1 μA·cm-2. The interfacial contact resistance values between coating and carbon paper suggested that TiNb and TiNbN films had better contact conductivity than the 316L SS substrate. In conclusion, TiNb coated 316L SS metallic bipolar plate material is a promising option for PEMFC.

KW - Coating

KW - Metallic bipolar plate

KW - PEMFC

KW - TiNb

KW - TiNbN

U2 - 10.3390/app9122568

DO - 10.3390/app9122568

M3 - Journal article

VL - 9

JO - Applied Sciences

JF - Applied Sciences

SN - 2076-3417

IS - 12

M1 - 2568

ER -