Rational design of a water-storable hierarchical architecture decorated with amorphous barium oxide and nickel nanoparticles as a solid oxide fuel cell anode with excellent sulfur tolerance

Song, Yufei and Wang, Wei and Ge, Lei and Xu, Xiaomin and Zhang, Zhenbao and Juliao, Paulo Sergio Barros and Zhou, Wei and Shao, Zongping (2017) Rational design of a water-storable hierarchical architecture decorated with amorphous barium oxide and nickel nanoparticles as a solid oxide fuel cell anode with excellent sulfur tolerance. Advanced Science, 4 (11).

Abstract

Solid oxide fuel cells (SOFCs), which can directly convert chemical energy stored in fuels into electric power, represent a useful technology for a more sustainable future. They are particularly attractive given that they can be easily integrated into the currently available fossil fuel infrastructure to realize an ideal clean energy system. However, the widespread use of the SOFC technology is hindered by sulfur poisoning at the anode caused by the
sulfur impurities in fossil fuels. Therefore, improving the sulfur tolerance of the anode is critical for developing SOFCs for use with fossil fuels. Herein, a novel, highly active, sulfur-tolerant anode for intermediate-temperature
SOFCs is prepared via a facile impregnation and limited reaction protocol. During synthesis, Ni nanoparticles, water-storable BaZr0.4Ce0.4Y0.2O3−δ (BZCY) perovskite,
and amorphous BaO are formed in situ and deposited on the surface of a Sm0.2Ce0.8O1.9 (SDC) scaffold. More specifically, a porous SDC scaffold is impregnated with a well-designed proton-conducting perovskite oxide
liquid precursor with the nominal composition of Ba(Zr0.4Ce0.4Y0.2)0.8Ni0.2O3−δ (BZCYN), calcined and reduced in hydrogen. The as-synthesized hierarchical
architecture exhibits high H2 electro-oxidation activity, excellent operational stability, superior sulfur tolerance, and good thermal cyclability. This work demonstrates the potential of combining nanocatalysts and water-storable materials in advanced electrocatalysts for SOFCs.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 29 Mar 2018 05:30
Last Modified: 10 May 2018 04:56
Uncontrolled Keywords: anode; energy conversion; solid oxide fuel cells; sulfur tolerance; water-storable material
Fields of Research : 03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030604 Electrochemistry
09 Engineering > 0904 Chemical Engineering > 090402 Catalytic Process Engineering
Socio-Economic Objective: B Economic Development > 85 Energy > 8504 Energy Transformation > 850404 Solid Oxide Fuel Cells
Identification Number or DOI: 10.1002/advs.201700337
URI: http://eprints.usq.edu.au/id/eprint/33911

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