Development of double-perovskite compounds as cathode materials for low-temperature solid oxide fuel cells

Seonyoung Yoo; Areum Jun; Young Wan Ju; Dorj Odkhuu; Junji Hyodo; Hu Young Jeong; Noejung Park; Jeeyoung Shin; Tatsumi Ishihara; Guntae Kim

doi:10.1002/anie.201407006

Development of double-perovskite compounds as cathode materials for low-temperature solid oxide fuel cells

Seonyoung Yoo, Areum Jun, Young Wan Ju, Dorj Odkhuu, Junji Hyodo, Hu Young Jeong, Noejung Park, Jeeyoung Shin, Tatsumi Ishihara, Guntae Kim

Kyushu University Platform of Inter/Transdisciplinary Energy Research

Research output: Contribution to journal › Article › peer-review

177 Citations (Scopus)

Abstract

A class of double-perovskite compounds display fast oxygen ion diffusion and high catalytic activity toward oxygen reduction while maintaining excellent compatibility with the electrolyte. The astoundingly extended stability of NdBa_1-xCa_xCo₂O_5+δ (NBCaCO) under both air and CO₂-containing atmosphere is reported along with excellent electrochemical performance by only Ca doping into the A site of NdBaCo₂O_5+δ (NBCO). The enhanced stability can be ascribed to both the increased electron affinity of mobile oxygen species with Ca, determined through density functional theory calculations and the increased redox stability from the coulometric titration.

Original language	English
Pages (from-to)	13064-13067
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	53
Issue number	48
DOIs	https://doi.org/10.1002/anie.201407006
Publication status	Published - Nov 24 2014

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

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10.1002/anie.201407006

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abstract = "A class of double-perovskite compounds display fast oxygen ion diffusion and high catalytic activity toward oxygen reduction while maintaining excellent compatibility with the electrolyte. The astoundingly extended stability of NdBa1-xCaxCo2O5+δ (NBCaCO) under both air and CO2-containing atmosphere is reported along with excellent electrochemical performance by only Ca doping into the A site of NdBaCo2O5+δ (NBCO). The enhanced stability can be ascribed to both the increased electron affinity of mobile oxygen species with Ca, determined through density functional theory calculations and the increased redox stability from the coulometric titration.",

author = "Seonyoung Yoo and Areum Jun and Ju, {Young Wan} and Dorj Odkhuu and Junji Hyodo and Jeong, {Hu Young} and Noejung Park and Jeeyoung Shin and Tatsumi Ishihara and Guntae Kim",

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T1 - Development of double-perovskite compounds as cathode materials for low-temperature solid oxide fuel cells

AU - Yoo, Seonyoung

AU - Jun, Areum

AU - Ju, Young Wan

AU - Odkhuu, Dorj

AU - Hyodo, Junji

AU - Jeong, Hu Young

AU - Park, Noejung

AU - Shin, Jeeyoung

AU - Ishihara, Tatsumi

AU - Kim, Guntae

PY - 2014/11/24

Y1 - 2014/11/24

N2 - A class of double-perovskite compounds display fast oxygen ion diffusion and high catalytic activity toward oxygen reduction while maintaining excellent compatibility with the electrolyte. The astoundingly extended stability of NdBa1-xCaxCo2O5+δ (NBCaCO) under both air and CO2-containing atmosphere is reported along with excellent electrochemical performance by only Ca doping into the A site of NdBaCo2O5+δ (NBCO). The enhanced stability can be ascribed to both the increased electron affinity of mobile oxygen species with Ca, determined through density functional theory calculations and the increased redox stability from the coulometric titration.

AB - A class of double-perovskite compounds display fast oxygen ion diffusion and high catalytic activity toward oxygen reduction while maintaining excellent compatibility with the electrolyte. The astoundingly extended stability of NdBa1-xCaxCo2O5+δ (NBCaCO) under both air and CO2-containing atmosphere is reported along with excellent electrochemical performance by only Ca doping into the A site of NdBaCo2O5+δ (NBCO). The enhanced stability can be ascribed to both the increased electron affinity of mobile oxygen species with Ca, determined through density functional theory calculations and the increased redox stability from the coulometric titration.

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Development of double-perovskite compounds as cathode materials for low-temperature solid oxide fuel cells

Abstract

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