Structural, Electrical, and Electrochemical Characteristics of LnBa0.5Sr0.5Co1.5Fe0.5O5+δ (Ln=Pr, Sm, Gd) as Cathode Materials in Intermediate-Temperature Solid Oxide Fuel Cells

Donghwi Jeong, Areum Jun, Young Wan Ju, Junji Hyodo, Jeeyoung Shin, Tatsumi Ishihara, Tak Hyoung Lim, Guntae Kim

研究成果: Contribution to journalArticle査読

12 被引用数 (Scopus)

抄録

Layered perovskite oxides have received great attention as prospective cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs) because of their high electrical conductivities and fast oxygen kinetics. Herein, we focus on the structural, electrical, and electrochemical properties of layered perovskites LnBa0.5Sr0.5Co1.5Fe0.5O5+δ (LnBSCF, Ln=Pr, Sm, and Gd) as a cathode material for IT-SOFCs. Among the evaluated perovskites, PrBa0.5Sr0.5Co1.5Fe0.5O5+δ (PBSCF) showed the highest electrical conductivity, the highest oxygen content, and the highest values of the oxygen bulk diffusion coefficient (D*) and surface exchange coefficient (k) measured by using isotope oxygen exchange. The composite cathode of PBSCF and gadolinium-doped ceria is the most suitable cathode material for IT-SOFCs among the materials investigated because of its excellent electrochemical properties and fast oxygen kinetics.

本文言語英語
ページ(範囲)1337-1343
ページ数7
ジャーナルEnergy Technology
5
8
DOI
出版ステータス出版済み - 8 2017

All Science Journal Classification (ASJC) codes

  • Energy(all)

フィンガープリント 「Structural, Electrical, and Electrochemical Characteristics of LnBa<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>1.5</sub>Fe<sub>0.5</sub>O<sub>5+δ</sub> (Ln=Pr, Sm, Gd) as Cathode Materials in Intermediate-Temperature Solid Oxide Fuel Cells」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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