SOFC anodes impregnated with noble metal catalyst nanoparticles for high fuel utilization

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Redox-stable solid oxide fuel cell (SOFC) anodes are developed in order to improve durability at higher fuel utilization, as a possible alternative to conventional Ni-zirconia cermet anodes. Ce 0.9 Gd 0.1 O 2 (GDC) is utilized as a mixed ionic and electronic conductor (MIEC), in combination with Sr 0.9 La 0.1 TiO 3 (LST) as an electronic conductor. The stability of noble metals (Rh, Pt, and Pd) is analyzed via thermochemical calculation of stable phases. Noble metal catalyst nanoparticles are incorporated via co-impregnation with GDC. The electrochemical characteristics of SOFC single cells using these anode materials are investigated in highly-humidified H 2 at 800 °C. Their stability at high fuel utilization is analyzed. These co-impregnated anodes with highly dispersed noble metal catalysts on the LST-GDC conducting backbones, achieve high I[sbnd]V performance comparable to conventional Ni-cermet anodes. The co-impregnated anodes also achieve considerably high catalytic mass activity. At higher oxygen partial pressure, where the Ni catalyst can be deactivated by oxidation, these noble catalysts are thermochemically stable in the metallic state, and tolerant against oxidation. This class of alternative catalyst, impregnated with low-loading of noble metals could contribute to stable operation in the downstream region of SOFC systems. A simple cost analysis indicates a tolerance of using noble metals, provided their loading is sufficiently low.

元の言語英語
ページ(範囲)8502-8518
ページ数17
ジャーナルInternational Journal of Hydrogen Energy
44
発行部数16
DOI
出版物ステータス出版済み - 3 29 2019

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cell anodes
solid oxide fuel cells
Precious metals
Solid oxide fuel cells (SOFC)
noble metals
Anodes
anodes
Nanoparticles
catalysts
nanoparticles
Catalysts
Hubble Space Telescope
conductors
cost analysis
oxidation
Oxidation
durability
electronics
zirconium oxides
partial pressure

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

これを引用

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title = "SOFC anodes impregnated with noble metal catalyst nanoparticles for high fuel utilization",
abstract = "Redox-stable solid oxide fuel cell (SOFC) anodes are developed in order to improve durability at higher fuel utilization, as a possible alternative to conventional Ni-zirconia cermet anodes. Ce 0.9 Gd 0.1 O 2 (GDC) is utilized as a mixed ionic and electronic conductor (MIEC), in combination with Sr 0.9 La 0.1 TiO 3 (LST) as an electronic conductor. The stability of noble metals (Rh, Pt, and Pd) is analyzed via thermochemical calculation of stable phases. Noble metal catalyst nanoparticles are incorporated via co-impregnation with GDC. The electrochemical characteristics of SOFC single cells using these anode materials are investigated in highly-humidified H 2 at 800 °C. Their stability at high fuel utilization is analyzed. These co-impregnated anodes with highly dispersed noble metal catalysts on the LST-GDC conducting backbones, achieve high I[sbnd]V performance comparable to conventional Ni-cermet anodes. The co-impregnated anodes also achieve considerably high catalytic mass activity. At higher oxygen partial pressure, where the Ni catalyst can be deactivated by oxidation, these noble catalysts are thermochemically stable in the metallic state, and tolerant against oxidation. This class of alternative catalyst, impregnated with low-loading of noble metals could contribute to stable operation in the downstream region of SOFC systems. A simple cost analysis indicates a tolerance of using noble metals, provided their loading is sufficiently low.",
author = "Shotaro Futamura and Aki Muramoto and Yuya Tachikawa and Junko Matsuda and Lyth, {Stephen Matthew} and Yusuke Shiratori and Shunsuke Taniguchi and Kazunari Sasaki",
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T1 - SOFC anodes impregnated with noble metal catalyst nanoparticles for high fuel utilization

AU - Futamura, Shotaro

AU - Muramoto, Aki

AU - Tachikawa, Yuya

AU - Matsuda, Junko

AU - Lyth, Stephen Matthew

AU - Shiratori, Yusuke

AU - Taniguchi, Shunsuke

AU - Sasaki, Kazunari

PY - 2019/3/29

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N2 - Redox-stable solid oxide fuel cell (SOFC) anodes are developed in order to improve durability at higher fuel utilization, as a possible alternative to conventional Ni-zirconia cermet anodes. Ce 0.9 Gd 0.1 O 2 (GDC) is utilized as a mixed ionic and electronic conductor (MIEC), in combination with Sr 0.9 La 0.1 TiO 3 (LST) as an electronic conductor. The stability of noble metals (Rh, Pt, and Pd) is analyzed via thermochemical calculation of stable phases. Noble metal catalyst nanoparticles are incorporated via co-impregnation with GDC. The electrochemical characteristics of SOFC single cells using these anode materials are investigated in highly-humidified H 2 at 800 °C. Their stability at high fuel utilization is analyzed. These co-impregnated anodes with highly dispersed noble metal catalysts on the LST-GDC conducting backbones, achieve high I[sbnd]V performance comparable to conventional Ni-cermet anodes. The co-impregnated anodes also achieve considerably high catalytic mass activity. At higher oxygen partial pressure, where the Ni catalyst can be deactivated by oxidation, these noble catalysts are thermochemically stable in the metallic state, and tolerant against oxidation. This class of alternative catalyst, impregnated with low-loading of noble metals could contribute to stable operation in the downstream region of SOFC systems. A simple cost analysis indicates a tolerance of using noble metals, provided their loading is sufficiently low.

AB - Redox-stable solid oxide fuel cell (SOFC) anodes are developed in order to improve durability at higher fuel utilization, as a possible alternative to conventional Ni-zirconia cermet anodes. Ce 0.9 Gd 0.1 O 2 (GDC) is utilized as a mixed ionic and electronic conductor (MIEC), in combination with Sr 0.9 La 0.1 TiO 3 (LST) as an electronic conductor. The stability of noble metals (Rh, Pt, and Pd) is analyzed via thermochemical calculation of stable phases. Noble metal catalyst nanoparticles are incorporated via co-impregnation with GDC. The electrochemical characteristics of SOFC single cells using these anode materials are investigated in highly-humidified H 2 at 800 °C. Their stability at high fuel utilization is analyzed. These co-impregnated anodes with highly dispersed noble metal catalysts on the LST-GDC conducting backbones, achieve high I[sbnd]V performance comparable to conventional Ni-cermet anodes. The co-impregnated anodes also achieve considerably high catalytic mass activity. At higher oxygen partial pressure, where the Ni catalyst can be deactivated by oxidation, these noble catalysts are thermochemically stable in the metallic state, and tolerant against oxidation. This class of alternative catalyst, impregnated with low-loading of noble metals could contribute to stable operation in the downstream region of SOFC systems. A simple cost analysis indicates a tolerance of using noble metals, provided their loading is sufficiently low.

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