6-2-3 固体酸化物形燃料電池用A-サイト欠陥型(Pr_<0.4>)_xSr_<0.6>Co_<0.2>Fe_<0.7>Nb_<0.1>O_<3-σ>アノード材料の特性(6-2 省エネ技術・材料,Session 6 省エネルギー)

• 張 鵬

  弘前大

• Khaerudini Deni S.

  弘前大

• 官 国清

  弘前大

• 阿布 里提

  弘前大

• 葛西 祐

  青森県産技研

書誌事項

タイトル別名

• 6-2-3 Performance of (Pr_<0.4>)_xSr_<0.6>Co_<0.2>Fe_<0.7>Nb_<0.1>O_<3-σ> with A-site deficiency as cathode material for SOFC

抄録

Electrochemical properties of (Pr_<0.4>)_xSr_<0.6>Co_<0.2>Fe_<0.7>Nb_<0.1>O_<3-σ> (PSCFN, x=0.9, 0.95, 1.0, 1.05 and 1.1) as cathode materials for solid oxide fuel cells were investigated. Powder samples were prepared using traditional solid sate reaction method. For all as-prepared PSCFN powders, it is found that cubic perovskite phase was formed after sintered at 1050 ℃ for 10 h. Effect of A-site nonstoichiometry on coefficient of thermal expansion, electrical conductivity, polarization resistance and cell performance were investigated. The coefficient of thermal expansion decreased and the electrical conductivity increased with the increase in A-site deficiency. AC impedance revealed that (Pr_<0.4>)_xSr_<0.6>Co_<0.2>Fe_<0.7>Nb_<0.1>O_<3-σ> (P_<0.42>SCFN, x=1.05) had better electrochemical performance than that without A-site deficiency. The maximum power density of P_<0.42>SCFN was as high as 1133 mW cm^<-2> when wet H_2 was used as fuel at 900 ℃, suggesting that PSCFN with A-site deficiency is a potential electrode material for SOFC.

収録刊行物

• 日本エネルギー学会大会講演要旨集

  日本エネルギー学会大会講演要旨集 22 (0), 246-247, 2013

  一般社団法人 日本エネルギー学会

詳細情報

• CRID: 1390001205813810304
• NII論文ID: 110009799371
• DOI: 10.20550/jietaikaiyoushi.22.0_246
• ISSN: 24238325
• ISSN: 24238317
• 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