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

Wang, Zhicheng, Wang, Siqi, Jiao, Shiyan, Weng, Wenjian, Cheng, Kui, Qian, Bin, Yu, Hailin and Chao, Yimin (2017) A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane. Journal of Alloys and Compounds, 702. 186–192. ISSN 0925-8388

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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.

Item Type: Article
Uncontrolled Keywords: hierarchical porous microstructure,ni1-xcux alloy-based anode,solid oxide fuel cells,methane,long-term stability
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Pure Connector
Date Deposited: 01 Feb 2017 02:17
Last Modified: 22 Apr 2020 02:36
URI: https://ueaeprints.uea.ac.uk/id/eprint/62259
DOI: 10.1016/j.jallcom.2017.01.212

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