Thermal expansion and electrochemical properties of Ni-doped GdBaCo2O5+δ double-perovskite type oxides

Bo Wei; Zhe Lü; Dechang Jia; Xiqiang Huang; Yaohui Zhang; Wenhui Su

doi:10.1016/j.ijhydene.2010.01.079

Thermal expansion and electrochemical properties of Ni-doped GdBaCo₂O_5+δ double-perovskite type oxides

Bo Wei^*
, Zhe Lü
, Dechang Jia
, Xiqiang Huang
, Yaohui Zhang
, Wenhui Su

^*Corresponding author for this work

School of Physics

Harbin Institute of Technology
Harbin Institute of Technology
CAS - International Center for Material Physics

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

62 Scopus citations

Abstract

Layered GdBaCo_{2 -x} Ni_xO_{5 + δ} (0 ≤ x ≤ 0.3) complex oxides were synthesized and investigated as cathodes for intermediate-temperature solid oxide fuel cell (IT-SOFCs). All compositions formed an orthorhombic double-perovskite structure after calcination at 1000 °C for 5 h. The thermal expansion coefficient (TEC) was effectively decreased due to the partial substitution of Ni for Co, but the cathodic polarization resistance slightly increased with the increasing Ni content. Among the tested oxides, the GdBaCo_1.7Ni_0.3O_{5 + δ} composition showed a fairly reduced TEC (15.5 × 10^-6 K^-1) and reasonably low polarization resistances (e.g., 0.54 Ωcm² at 600 °C), which was considered as a promising candidate for IT-SOFCs.

Original language	English
Pages (from-to)	3775-3782
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	35
Issue number	8
DOIs	https://doi.org/10.1016/j.ijhydene.2010.01.079
State	Published - Apr 2010

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Electrochemical impedance spectra
Ni-doped GdBaCoO Cathodes
Solid oxide fuel cells
Thermal expansion

Access to Document

10.1016/j.ijhydene.2010.01.079

Cite this

@article{9ad42c36ffae4de78a49ad63d8dc6c3a,

title = "Thermal expansion and electrochemical properties of Ni-doped GdBaCo2O5+δ double-perovskite type oxides",

abstract = "Layered GdBaCo2 -x NixO5 + δ (0 ≤ x ≤ 0.3) complex oxides were synthesized and investigated as cathodes for intermediate-temperature solid oxide fuel cell (IT-SOFCs). All compositions formed an orthorhombic double-perovskite structure after calcination at 1000 °C for 5 h. The thermal expansion coefficient (TEC) was effectively decreased due to the partial substitution of Ni for Co, but the cathodic polarization resistance slightly increased with the increasing Ni content. Among the tested oxides, the GdBaCo1.7Ni0.3O5 + δ composition showed a fairly reduced TEC (15.5 × 10-6 K-1) and reasonably low polarization resistances (e.g., 0.54 Ωcm2 at 600 °C), which was considered as a promising candidate for IT-SOFCs.",

keywords = "Electrochemical impedance spectra, Ni-doped GdBaCoO Cathodes, Solid oxide fuel cells, Thermal expansion",

author = "Bo Wei and Zhe L{\"u} and Dechang Jia and Xiqiang Huang and Yaohui Zhang and Wenhui Su",

year = "2010",

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doi = "10.1016/j.ijhydene.2010.01.079",

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volume = "35",

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journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Thermal expansion and electrochemical properties of Ni-doped GdBaCo2O5+δ double-perovskite type oxides

AU - Wei, Bo

AU - Lü, Zhe

AU - Jia, Dechang

AU - Huang, Xiqiang

AU - Zhang, Yaohui

AU - Su, Wenhui

PY - 2010/4

Y1 - 2010/4

N2 - Layered GdBaCo2 -x NixO5 + δ (0 ≤ x ≤ 0.3) complex oxides were synthesized and investigated as cathodes for intermediate-temperature solid oxide fuel cell (IT-SOFCs). All compositions formed an orthorhombic double-perovskite structure after calcination at 1000 °C for 5 h. The thermal expansion coefficient (TEC) was effectively decreased due to the partial substitution of Ni for Co, but the cathodic polarization resistance slightly increased with the increasing Ni content. Among the tested oxides, the GdBaCo1.7Ni0.3O5 + δ composition showed a fairly reduced TEC (15.5 × 10-6 K-1) and reasonably low polarization resistances (e.g., 0.54 Ωcm2 at 600 °C), which was considered as a promising candidate for IT-SOFCs.

AB - Layered GdBaCo2 -x NixO5 + δ (0 ≤ x ≤ 0.3) complex oxides were synthesized and investigated as cathodes for intermediate-temperature solid oxide fuel cell (IT-SOFCs). All compositions formed an orthorhombic double-perovskite structure after calcination at 1000 °C for 5 h. The thermal expansion coefficient (TEC) was effectively decreased due to the partial substitution of Ni for Co, but the cathodic polarization resistance slightly increased with the increasing Ni content. Among the tested oxides, the GdBaCo1.7Ni0.3O5 + δ composition showed a fairly reduced TEC (15.5 × 10-6 K-1) and reasonably low polarization resistances (e.g., 0.54 Ωcm2 at 600 °C), which was considered as a promising candidate for IT-SOFCs.

KW - Electrochemical impedance spectra

KW - Ni-doped GdBaCoO Cathodes

KW - Solid oxide fuel cells

KW - Thermal expansion

UR - https://www.scopus.com/pages/publications/77950296516

U2 - 10.1016/j.ijhydene.2010.01.079

DO - 10.1016/j.ijhydene.2010.01.079

M3 - 文章

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