A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane

Zhicheng Wang; Siqi Wang; Shiyan Jiao; Wenjian Weng; Kui Cheng; Bin Qian; Hailin Yu; Yimin Chao

doi:10.1016/j.jallcom.2017.01.212

A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane

Zhicheng Wang, Siqi Wang, Shiyan Jiao, Wenjian Weng, Kui Cheng, Bin Qian, Hailin Yu, Yimin Chao

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

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Abstract

A series of Ni1-xCux/Sm-doped ceria (Ni1-xCux/SDC) anodes have been prepared through introducing a soluble pore former with the co-pressing and co-sintering process. Uniform hierarchical porous microstructures are formed in Ni0.9Cu0.1/SDC anode with interconnected large pores of 2–5 μm and 100–300 nm small pores on the wall. The solid oxide fuel cell (SOFC) based on such anode exhibits exceptional electrochemical catalytic activity for dry CH4 oxidation and a maximum power density of 379 mW cm−2 is acquired at 600 °C. Durability test results show only 2.4% power density drop is observed after 72 h operation under a constant cell voltage of 0.5 V. The results have demonstrated that the optimization of anode microstructures is an effective way to improve the performance and long-term stability of Ni1-xCux alloy-based anode-supported SOFC.

Original language	English
Pages (from-to)	186–192
Journal	Journal of Alloys and Compounds
Volume	702
Early online date	21 Jan 2017
DOIs	https://doi.org/10.1016/j.jallcom.2017.01.212
Publication status	Published - 25 Apr 2017

Keywords

Hierarchical porous microstructure
Ni1-xCux alloy-based anode
Solid oxide fuel cells
Methane
Long-term stability

Access to Document

10.1016/j.jallcom.2017.01.212

Accepted manuscriptAccepted author manuscript, 2.28 MBLicence: CC BY-NC-ND

Cite this

@article{9b81863b1e2b419394326157015dfea3,

title = "A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane",

abstract = "A series of Ni1-xCux/Sm-doped ceria (Ni1-xCux/SDC) anodes have been prepared through introducing a soluble pore former with the co-pressing and co-sintering process. Uniform hierarchical porous microstructures are formed in Ni0.9Cu0.1/SDC anode with interconnected large pores of 2–5 μm and 100–300 nm small pores on the wall. The solid oxide fuel cell (SOFC) based on such anode exhibits exceptional electrochemical catalytic activity for dry CH4 oxidation and a maximum power density of 379 mW cm−2 is acquired at 600 °C. Durability test results show only 2.4% power density drop is observed after 72 h operation under a constant cell voltage of 0.5 V. The results have demonstrated that the optimization of anode microstructures is an effective way to improve the performance and long-term stability of Ni1-xCux alloy-based anode-supported SOFC.",

keywords = "Hierarchical porous microstructure, Ni1-xCux alloy-based anode, Solid oxide fuel cells, Methane, Long-term stability",

author = "Zhicheng Wang and Siqi Wang and Shiyan Jiao and Wenjian Weng and Kui Cheng and Bin Qian and Hailin Yu and Yimin Chao",

year = "2017",

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doi = "10.1016/j.jallcom.2017.01.212",

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journal = "Journal of Alloys and Compounds",

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T1 - A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane

AU - Wang, Zhicheng

AU - Wang, Siqi

AU - Jiao, Shiyan

AU - Weng, Wenjian

AU - Cheng, Kui

AU - Qian, Bin

AU - Yu, Hailin

AU - Chao, Yimin

PY - 2017/4/25

Y1 - 2017/4/25

N2 - A series of Ni1-xCux/Sm-doped ceria (Ni1-xCux/SDC) anodes have been prepared through introducing a soluble pore former with the co-pressing and co-sintering process. Uniform hierarchical porous microstructures are formed in Ni0.9Cu0.1/SDC anode with interconnected large pores of 2–5 μm and 100–300 nm small pores on the wall. The solid oxide fuel cell (SOFC) based on such anode exhibits exceptional electrochemical catalytic activity for dry CH4 oxidation and a maximum power density of 379 mW cm−2 is acquired at 600 °C. Durability test results show only 2.4% power density drop is observed after 72 h operation under a constant cell voltage of 0.5 V. The results have demonstrated that the optimization of anode microstructures is an effective way to improve the performance and long-term stability of Ni1-xCux alloy-based anode-supported SOFC.

AB - A series of Ni1-xCux/Sm-doped ceria (Ni1-xCux/SDC) anodes have been prepared through introducing a soluble pore former with the co-pressing and co-sintering process. Uniform hierarchical porous microstructures are formed in Ni0.9Cu0.1/SDC anode with interconnected large pores of 2–5 μm and 100–300 nm small pores on the wall. The solid oxide fuel cell (SOFC) based on such anode exhibits exceptional electrochemical catalytic activity for dry CH4 oxidation and a maximum power density of 379 mW cm−2 is acquired at 600 °C. Durability test results show only 2.4% power density drop is observed after 72 h operation under a constant cell voltage of 0.5 V. The results have demonstrated that the optimization of anode microstructures is an effective way to improve the performance and long-term stability of Ni1-xCux alloy-based anode-supported SOFC.

KW - Hierarchical porous microstructure

KW - Ni1-xCux alloy-based anode

KW - Solid oxide fuel cells

KW - Methane

KW - Long-term stability

U2 - 10.1016/j.jallcom.2017.01.212

DO - 10.1016/j.jallcom.2017.01.212

M3 - Article

VL - 702

SP - 186

EP - 192

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -