Robust SOFC anode materials with La-doped SrTiO3 backbone structure

Xuesong Shen; Kazunari Sasaki

doi:10.1016/j.ijhydene.2016.08.024

Robust SOFC anode materials with La-doped SrTiO₃ backbone structure

Xuesong Shen, Kazunari Sasaki

Hydrogen Utilization Engineering

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

14 Citations (Scopus)

Abstract

Redox-stable Sr_0.9La_0.1TiO₃ (SLT) with Ce_0.9Gd_0.1O₂ (GDC) and (Sc₂O₃)_0.1(CeO₂)_0.01(ZrO₂)_0.89 (SSZ) was used to fabricate robust anodes for zirconia-based electrolyte-supported SOFCs. The anode consisted of three layers: a layer of 60wt% GDC-40wt% SLT or 40wt% SSZ-60wt% SLT as a functional layer and two layers of SLT as current conducting layers. An impregnation method has been employed to decorate nano-sized Ni and CeO₂ into the ceramic anode to improve electrochemical performance and redox stability. It was found that the catalyst impregnated ceramic anode has improved redox stability compared with the conventional Ni-SSZ cermet. The incorporation of the oxide catalyst, CeO₂, during co-impregnation process was found to even further improve redox stability of the anode, since CeO₂ particles have a lower tendency to aggregate during redox cycling.

Original language	English
Pages (from-to)	17044-17052
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	41
Issue number	38
DOIs	https://doi.org/10.1016/j.ijhydene.2016.08.024
Publication status	Published - Oct 15 2016

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

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@article{d8983928315745a8bb2c8ec524b1b1af,

title = "Robust SOFC anode materials with La-doped SrTiO3 backbone structure",

abstract = "Redox-stable Sr0.9La0.1TiO3 (SLT) with Ce0.9Gd0.1O2 (GDC) and (Sc2O3)0.1(CeO2)0.01(ZrO2)0.89 (SSZ) was used to fabricate robust anodes for zirconia-based electrolyte-supported SOFCs. The anode consisted of three layers: a layer of 60wt% GDC-40wt% SLT or 40wt% SSZ-60wt% SLT as a functional layer and two layers of SLT as current conducting layers. An impregnation method has been employed to decorate nano-sized Ni and CeO2 into the ceramic anode to improve electrochemical performance and redox stability. It was found that the catalyst impregnated ceramic anode has improved redox stability compared with the conventional Ni-SSZ cermet. The incorporation of the oxide catalyst, CeO2, during co-impregnation process was found to even further improve redox stability of the anode, since CeO2 particles have a lower tendency to aggregate during redox cycling.",

author = "Xuesong Shen and Kazunari Sasaki",

note = "Funding Information: This work was supported by Japan Science and Technology Agency (JST) through its “Center of Innovation Science and Technology based Radical Innovation and Entrepreneurship Program (COI Program)”. We thank Assistant Prof. Dr. George Harrington, Kyushu University, for carefully reading the manuscript. Publisher Copyright: {\textcopyright} 2016 Hydrogen Energy Publications LLC Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2016",

month = oct,

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doi = "10.1016/j.ijhydene.2016.08.024",

language = "English",

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AU - Shen, Xuesong

AU - Sasaki, Kazunari

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PY - 2016/10/15

Y1 - 2016/10/15

N2 - Redox-stable Sr0.9La0.1TiO3 (SLT) with Ce0.9Gd0.1O2 (GDC) and (Sc2O3)0.1(CeO2)0.01(ZrO2)0.89 (SSZ) was used to fabricate robust anodes for zirconia-based electrolyte-supported SOFCs. The anode consisted of three layers: a layer of 60wt% GDC-40wt% SLT or 40wt% SSZ-60wt% SLT as a functional layer and two layers of SLT as current conducting layers. An impregnation method has been employed to decorate nano-sized Ni and CeO2 into the ceramic anode to improve electrochemical performance and redox stability. It was found that the catalyst impregnated ceramic anode has improved redox stability compared with the conventional Ni-SSZ cermet. The incorporation of the oxide catalyst, CeO2, during co-impregnation process was found to even further improve redox stability of the anode, since CeO2 particles have a lower tendency to aggregate during redox cycling.

AB - Redox-stable Sr0.9La0.1TiO3 (SLT) with Ce0.9Gd0.1O2 (GDC) and (Sc2O3)0.1(CeO2)0.01(ZrO2)0.89 (SSZ) was used to fabricate robust anodes for zirconia-based electrolyte-supported SOFCs. The anode consisted of three layers: a layer of 60wt% GDC-40wt% SLT or 40wt% SSZ-60wt% SLT as a functional layer and two layers of SLT as current conducting layers. An impregnation method has been employed to decorate nano-sized Ni and CeO2 into the ceramic anode to improve electrochemical performance and redox stability. It was found that the catalyst impregnated ceramic anode has improved redox stability compared with the conventional Ni-SSZ cermet. The incorporation of the oxide catalyst, CeO2, during co-impregnation process was found to even further improve redox stability of the anode, since CeO2 particles have a lower tendency to aggregate during redox cycling.

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