A promising cathode for proton-conducting intermediate temperature solid oxide fuel cells: Y0.8Ca0.2BaCo4O7+δ

Qun Shao; Wujie Ge; Xiaoyong Lu; Yonghong Chen; Yanzhi Ding; Bin Lin; Yihan Ling

doi:10.1016/j.ceramint.2015.01.090

A promising cathode for proton-conducting intermediate temperature solid oxide fuel cells: Y_0.8Ca_0.2BaCo₄O_7+δ

Qun Shao, Wujie Ge, Xiaoyong Lu, Yonghong Chen, Yanzhi Ding, Bin Lin, Yihan Ling^*

^*Corresponding author for this work

Physical Sciences and Engineering

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

19 Scopus citations

Abstract

Y_0.8Ca_0.2BaCo₄O_7+δ (YCBC4) was synthesized and investigated as a cathode for proton-conducting intermediate temperature solid oxide fuel cells (IT-SOFCs). Low thermal expansion coefficient (TEC) (~9.9×10^-6 K^-1) can provide good thermal expansion compatibility with the standard SOFC electrolyte materials. Laboratory-sized quad-layer cells, consisting of NiO-BaZr_0.1Ce_0.7Y_0.2O_3-δ (BZCY)/NiO-BZCY/BZCY/YCBC4, were fabricated by a one-step dry-pressing/co-firing process and tested from 550 to 700 °C with humidified hydrogen (~3% H₂O) as the fuel and static air as the oxidant, respectively. An excellent power density of 472 mW cm^-2 and a low electrode polarization resistance of 0.121 Ω cm² were obtained at 700 °C. Preliminary results demonstrated that the YCBC4 can be a promising cathode material for proton-conducting IT-SOFCs.

Original language	English (US)
Pages (from-to)	6687-6692
Number of pages	6
Journal	Ceramics International
Volume	41
Issue number	5
DOIs	https://doi.org/10.1016/j.ceramint.2015.01.090
State	Published - Jun 1 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Keywords

Intermediate temperature solid oxide fuel cells
Low thermal expansion coefficient
One-step dry-pressing/co-firing process
Polarization resistance

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2015.01.090

Cite this

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title = "A promising cathode for proton-conducting intermediate temperature solid oxide fuel cells: Y0.8Ca0.2BaCo4O7+δ",

abstract = "Y0.8Ca0.2BaCo4O7+δ (YCBC4) was synthesized and investigated as a cathode for proton-conducting intermediate temperature solid oxide fuel cells (IT-SOFCs). Low thermal expansion coefficient (TEC) (~9.9×10-6 K-1) can provide good thermal expansion compatibility with the standard SOFC electrolyte materials. Laboratory-sized quad-layer cells, consisting of NiO-BaZr0.1Ce0.7Y0.2O3-δ (BZCY)/NiO-BZCY/BZCY/YCBC4, were fabricated by a one-step dry-pressing/co-firing process and tested from 550 to 700 °C with humidified hydrogen (~3% H2O) as the fuel and static air as the oxidant, respectively. An excellent power density of 472 mW cm-2 and a low electrode polarization resistance of 0.121 Ω cm2 were obtained at 700 °C. Preliminary results demonstrated that the YCBC4 can be a promising cathode material for proton-conducting IT-SOFCs.",

keywords = "Intermediate temperature solid oxide fuel cells, Low thermal expansion coefficient, One-step dry-pressing/co-firing process, Polarization resistance",

author = "Qun Shao and Wujie Ge and Xiaoyong Lu and Yonghong Chen and Yanzhi Ding and Bin Lin and Yihan Ling",

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AU - Shao, Qun

AU - Ge, Wujie

AU - Lu, Xiaoyong

AU - Chen, Yonghong

AU - Ding, Yanzhi

AU - Lin, Bin

AU - Ling, Yihan

PY - 2015/6/1

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N2 - Y0.8Ca0.2BaCo4O7+δ (YCBC4) was synthesized and investigated as a cathode for proton-conducting intermediate temperature solid oxide fuel cells (IT-SOFCs). Low thermal expansion coefficient (TEC) (~9.9×10-6 K-1) can provide good thermal expansion compatibility with the standard SOFC electrolyte materials. Laboratory-sized quad-layer cells, consisting of NiO-BaZr0.1Ce0.7Y0.2O3-δ (BZCY)/NiO-BZCY/BZCY/YCBC4, were fabricated by a one-step dry-pressing/co-firing process and tested from 550 to 700 °C with humidified hydrogen (~3% H2O) as the fuel and static air as the oxidant, respectively. An excellent power density of 472 mW cm-2 and a low electrode polarization resistance of 0.121 Ω cm2 were obtained at 700 °C. Preliminary results demonstrated that the YCBC4 can be a promising cathode material for proton-conducting IT-SOFCs.

AB - Y0.8Ca0.2BaCo4O7+δ (YCBC4) was synthesized and investigated as a cathode for proton-conducting intermediate temperature solid oxide fuel cells (IT-SOFCs). Low thermal expansion coefficient (TEC) (~9.9×10-6 K-1) can provide good thermal expansion compatibility with the standard SOFC electrolyte materials. Laboratory-sized quad-layer cells, consisting of NiO-BaZr0.1Ce0.7Y0.2O3-δ (BZCY)/NiO-BZCY/BZCY/YCBC4, were fabricated by a one-step dry-pressing/co-firing process and tested from 550 to 700 °C with humidified hydrogen (~3% H2O) as the fuel and static air as the oxidant, respectively. An excellent power density of 472 mW cm-2 and a low electrode polarization resistance of 0.121 Ω cm2 were obtained at 700 °C. Preliminary results demonstrated that the YCBC4 can be a promising cathode material for proton-conducting IT-SOFCs.

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