Retardation of Carbon Deposition on Ni-YSZ Anode in a Solid Oxide Fuel Cell by Addition of CO₂ to CH₄

• OGASA Kazuhito

  Faculty of Engineering, Nagaoka University of Technology

• SATO Kazunori

  Faculty of Engineering, Nagaoka University of Technology

• KOIDE Manabu

  Faculty of Engineering, Nagaoka University of Technology

• MATUSITA Kazumasa

  Faculty of Engineering, Nagaoka University of Technology

抄録

The effect of CO₂ addition to CH₄ on the carbon deposition has been studied at the nickel and yttria-stabilized zirconia cermet anode with the platinum-mesh current collector for a solid oxide fuel cell operated at 800°C and at a constant discharge current density. Increasing the volume ratio of CO₂ to CH₄ in a fuel-gas mixture suppressed the carbon deposition from CH₄ without a significant loss of the cell performance. The size of the platinum-mesh current collector and its structure affect the amount of carbon deposited during the cell operation and the cell performance. It was found that a small amount of CO₂ addition up to approximately 5 vol.% to CH₄ inversely acts as a promoter for the decomposition of CH₄ to form carbon over the surface of nickel particles. Carbon deposition occurring at the anode is most likely caused by the competition between the decomposition of CH₄ and the reverse disproportionation reaction of CO occurring at the electrolyte-electrode-gas triple-phase boundary.

収録刊行物

• Journal of the Ceramic Society of Japan, Supplement

  Journal of the Ceramic Society of Japan, Supplement 112 (0), S747-S751, 2004

  公益社団法人 日本セラミックス協会

キーワード

• Solid oxide fuel cell
• Methane
• Carbon dioxide
• Cermet anode

詳細情報

• CRID: 1390282680502479104
• NII論文ID: 130004610296
• DOI: 10.14852/jcersjsuppl.112.0.s747.0
• ISSN: 13492756
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可