Industrial-grade rare-earth and perovskite oxide for high-performance electrolyte layer-free fuel cell
2016 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 307, 270-279 p.Article in journal (Refereed) PublishedText
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.
Electrolyte layer-free fuel cell, Industrial-grade material, La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), LaCePr-oxide (LCP), Mixed conductor composite
Materials Chemistry Energy Engineering
IdentifiersURN: urn:nbn:se:kth:diva-180912DOI: 10.1016/j.jpowsour.2015.12.086ISI: 000370884000034ScopusID: 2-s2.0-84953923409OAI: oai:DiVA.org:kth-180912DiVA: diva2:898685
QC 20160129. QC 201604072016-01-292016-01-252016-05-11Bibliographically approved