TY - JOUR
T1 - Production of Ni65Cr15P16B4 metallic glass-coated bipolar plate for fuel cell by high velocity oxy-fuel (HVOF) spray coating method
AU - Kim, Sung Chul
AU - Yamaura, Shin Ichi
AU - Shimizu, Yuta
AU - Nakashima, Koji
AU - Igarashi, Takanori
AU - Makino, Akihiro
AU - Inoue, Akihisa
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/9
Y1 - 2010/9
N2 - 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.
AB - 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.
KW - Bipolar plate
KW - High velocity oxygen-fuel spray coating
KW - Metallic glass
KW - Proton exchange membrane fuel cell
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U2 - 10.2320/matertrans.MAW201006
DO - 10.2320/matertrans.MAW201006
M3 - Article
AN - SCOPUS:78049495049
VL - 51
SP - 1609
EP - 1613
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 9
ER -