Production of Ni65Cr15P16B4 metallic glass-coated bipolar plate for fuel cell by high velocity oxy-fuel (HVOF) spray coating method

Sung Chul Kim, Shin Ichi Yamaura, Yuta Shimizu, Koji Nakashima, Takanori Igarashi, Akihiro Makino, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

In this study, the newly designed bipolar plate for proton exchange membrane fuel cells (PEMFC) was produced by spray-coating the Ni 65Cr15P16B4 metallic glassy alloy on Al plate. The Ni65Cr15P16B4 metallic glass was adopted as a coating material because of its excellent corrosion resistance and the high velocity oxy-fuel (HVOF) spray coating was used for the metallic glass deposition on the Al plates having a bipolar plate flow field. The corrosion resistance of the Ni65Cr15P 16B4 glassy alloy film produced by the HVOF spray-coating was studied under simulated PEMFC environments. As a result, the Ni 65Cr15P16B4 glassy alloy film showed lower corrosion current density than the high-corrosion-resistant stainless steel SUS316L. Then, the electricity generation tests with the single cell having the Ni65Cr15P16B4 glassy alloy-coated bipolar plates produced in this study were conducted. As a result, the single cell with the metallic glass-coated bipolar plates showed very high I-V performance as well as the cell with the carbon bipolar plates. The long time durability tests for 24 h were also conducted at the constant current density of 200mA·cm-2. As a result, the single cell with the glass-coated bipolar plates showed no voltage drop during the test. So, it was found in this study that the Ni65Cr15P16B 4 glassy alloy-coated bipolar plate produced by the HVOF spray-coating have a potential for practical use for the fuel cells.

Original languageEnglish
Pages (from-to)1609-1613
Number of pages5
JournalMaterials Transactions
Volume51
Issue number9
DOIs
Publication statusPublished - 2010 Sep

Keywords

  • Bipolar plate
  • High velocity oxygen-fuel spray coating
  • Metallic glass
  • Proton exchange membrane fuel cell

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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