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Industrial-grade rare-earth and perovskite oxide for high-performance electrolyte layer-free fuel cell
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. Hubei Collaborative Innovation Center for Advanced Materials, Faculty of Physics and Electronic Technology, Hubei University, Wuhan, Hubei, China.ORCID iD: 0000-0002-3133-7031
Hubei Collaborative Innovation Center for Advanced Materials, Faculty of Physics and Electronic Technology, Hubei University, Wuhan, Hubei, China.
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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-δ (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°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
Elsevier, 2016. Vol. 307, 270-279 p.
Keyword [en]
Electrolyte layer-free fuel cell, Industrial-grade material, La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), LaCePr-oxide (LCP), Mixed conductor composite
National Category
Materials Chemistry Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-180912DOI: 10.1016/j.jpowsour.2015.12.086ISI: 000370884000034Scopus ID: 2-s2.0-84953923409OAI: oai:DiVA.org:kth-180912DiVA: diva2:898685
Note

QC 20160129. QC 20160407

Available from: 2016-01-29 Created: 2016-01-25 Last updated: 2016-05-11Bibliographically approved

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