High-Performance Ni/Pt Composite Catalytic Anode with Ultra-Low Pt Loading for Low-Temperature Solid Oxide Fuel Cells

Yonghyun Lim, Soonwook Hong, Kyung Lim Jang, Hwichul Yang, Sehoon Hwang, Taek Soo Kim, Young Beom Kim

Research output: Contribution to journalArticle

Abstract

In this study, we developed a Ni/Pt bilayer catalytic anode that has high electrochemical activity and significantly reduced Pt loading amount, for low-temperature solid oxide fuel cells (LT-SOFCs). The Ni/Pt bilayer anodes with various thicknesses of the Pt catalytic active layer were fabricated on yttria-stabilized zirconia substrates via the direct current sputtering technique, and their performances were evaluated for the LT-SOFCs. The optimal thickness of the Pt catalytic layer for the Ni/Pt bilayer was found to be 10 nm based on the results for the fuel cell performance and electrochemical impedance spectroscopy (EIS) analysis. The optimal Pt10/Ni140 anode showed a cell performance and polarization resistance very similar to those of a reference single-phase Pt anode, while having only 7% of the Pt loading amount of the reference Pt anode. For the detailed morphological analysis of the bilayer structure anode, we employed the pull-off delamination process to analyze both the surface and interface morphologies of the bilayer anodes and the interface morphology of the Ni/Pt bilayer anodes after the operating test was analyzed. The results presented herein indicate the suitability of the methodology for the morphological analysis of thin-film bilayer structures and contribute to reduce the cost of membrane electrode assembly fabrication for LT-SOFCs, thus facilitating the commercialization of these systems.

Original languageEnglish
Pages (from-to)141-150
Number of pages10
JournalInternational Journal of Precision Engineering and Manufacturing - Green Technology
Volume7
Issue number1
DOIs
StatePublished - 2020 Jan 1

Fingerprint

Solid oxide fuel cells (SOFC)
Anodes
Composite materials
Temperature
Fuel cell
High performance
Yttria stabilized zirconia
Electrochemical impedance spectroscopy
Delamination
Sputtering
Fuel cells
Polarization
Membranes
Fabrication
Thin films
Electrodes
Substrates
Costs

Keywords

  • Bilayer electrode
  • Catalytic activity
  • Ni anode
  • Pt loading
  • Solid oxide fuel cells

Cite this

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title = "High-Performance Ni/Pt Composite Catalytic Anode with Ultra-Low Pt Loading for Low-Temperature Solid Oxide Fuel Cells",
abstract = "In this study, we developed a Ni/Pt bilayer catalytic anode that has high electrochemical activity and significantly reduced Pt loading amount, for low-temperature solid oxide fuel cells (LT-SOFCs). The Ni/Pt bilayer anodes with various thicknesses of the Pt catalytic active layer were fabricated on yttria-stabilized zirconia substrates via the direct current sputtering technique, and their performances were evaluated for the LT-SOFCs. The optimal thickness of the Pt catalytic layer for the Ni/Pt bilayer was found to be 10 nm based on the results for the fuel cell performance and electrochemical impedance spectroscopy (EIS) analysis. The optimal Pt10/Ni140 anode showed a cell performance and polarization resistance very similar to those of a reference single-phase Pt anode, while having only 7{\%} of the Pt loading amount of the reference Pt anode. For the detailed morphological analysis of the bilayer structure anode, we employed the pull-off delamination process to analyze both the surface and interface morphologies of the bilayer anodes and the interface morphology of the Ni/Pt bilayer anodes after the operating test was analyzed. The results presented herein indicate the suitability of the methodology for the morphological analysis of thin-film bilayer structures and contribute to reduce the cost of membrane electrode assembly fabrication for LT-SOFCs, thus facilitating the commercialization of these systems.",
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High-Performance Ni/Pt Composite Catalytic Anode with Ultra-Low Pt Loading for Low-Temperature Solid Oxide Fuel Cells. / Lim, Yonghyun; Hong, Soonwook; Jang, Kyung Lim; Yang, Hwichul; Hwang, Sehoon; Kim, Taek Soo; Kim, Young Beom.

In: International Journal of Precision Engineering and Manufacturing - Green Technology, Vol. 7, No. 1, 01.01.2020, p. 141-150.

Research output: Contribution to journalArticle

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T1 - High-Performance Ni/Pt Composite Catalytic Anode with Ultra-Low Pt Loading for Low-Temperature Solid Oxide Fuel Cells

AU - Lim, Yonghyun

AU - Hong, Soonwook

AU - Jang, Kyung Lim

AU - Yang, Hwichul

AU - Hwang, Sehoon

AU - Kim, Taek Soo

AU - Kim, Young Beom

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KW - Pt loading

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