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Industrial-grade rare-earth and perovskite oxide for high-performance electrolyte layer-free fuel cell
KTH Royal Inst Technol, Dept Energy Technol, SE-10044 Stockholm, Sweden.;Hubei Univ, Fac Phys & Elect Technol, Hubei Collaborat Innovat Ctr Adv Mat, Wuhan 430062, Hubei, Peoples R China..
KTH Royal Inst Technol, Dept Energy Technol, SE-10044 Stockholm, Sweden.;Hubei Univ, Fac Phys & Elect Technol, Hubei Collaborat Innovat Ctr Adv Mat, Wuhan 430062, Hubei, Peoples R China..
Aalto Univ, Dept Appl Phys, FI-00076 Espoo, Finland..
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
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2016 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 307, 270-279 p.Article in journal (Refereed) Published
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Abstract [en]

In the present work, we report a composite of industrial-grade material LaCePr-oxide (LCP) and perovskite La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) for advanced electrolyte layer-free fuel cells (EFFCs). The microstructure, morphology, and electrical properties of the LCP, LSCF, and LCP-LSCF composite were investigated and characterized by XRD, SEM, EDS, TEM, and EIS. Various ratios of LCP to LSCF in the composite were modulated to achieve balanced ionic and electronic conductivities. Fuel cell with an optimum ratio of 60 wt% LCP to 40 wt% LSCF reached the highest open circuit voltage (OCV) at 1.01 V and a maximum power density of 745 mW cm(-2) at 575 degrees C, also displaying a good performance stability. The high performance is attributed to the interfacial mechanisms and electrode catalytic effects. The findings from the present study promote industrial-grade rare-earth oxide as a promising new material for innovative low temperature solid oxide fuel cell (LTSOFC) technology.

Place, publisher, year, edition, pages
2016. Vol. 307, 270-279 p.
Keyword [en]
Electrolyte layer-free fuel cell, Mixed conductor composite, Industrial-grade material, LaCePr-oxide (LCP), La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF)
National Category
Physical Chemistry Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-282473DOI: 10.1016/j.jpowsour.2015.12.086ISI: 000370884000034OAI: oai:DiVA.org:uu-282473DiVA: diva2:917161
Funder
Swedish Research Council, 621-2011-4983EU, FP7, Seventh Framework Programme, 303454VINNOVAEU, FP7, Seventh Framework Programme
Available from: 2016-04-05 Created: 2016-04-05 Last updated: 2017-11-30Bibliographically approved

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Cai, Yixiao

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