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The composite electrolyte with an insulation Sm2O3 and semiconductor NiO for advanced fuel cells
China Univ Geosci, Fac Mat Sci & Chem, Minist Educ, Engn Res Ctr Nanogeo Mat, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China..
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
China Univ Geosci, Fac Mat Sci & Chem, Minist Educ, Engn Res Ctr Nanogeo Mat, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China..
China Univ Geosci, Fac Mat Sci & Chem, Minist Educ, Engn Res Ctr Nanogeo Mat, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China..ORCID iD: 0000-0002-1252-5600
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2018 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 43, no 28, p. 12739-12747Article in journal (Refereed) Published
Abstract [en]

Novel Sm2O3-NiO composite was prepared as the functional electrolyte for the first time. The total electrical conductivity of Sm2O3-NiO is 0.38 S cm(-1) in H-2/air condition at 550 degrees C. High performance, e.g. 718 mW cm(-2), was achieved using Sm2O3-NiO composite as an electrolyte of solid oxide fuel cells operated at 550 degrees C. The electrical properties and electrochemical performance are strongly depended on Sm2O3 and NiO constituent phase of the compositions. Notably, surprisingly high ionic conductivity and fuel cell performance are achieved using the composite system constituting with insulating Sm2O3 and intrinsic p-type conductive NiO with a low conductivity of 4 x 10(-3) S cm(-1). The interfacial ionic conduction between two phases is a dominating factor giving rise to significantly enhanced proton conduction. Fuel cell performance and further ionic conduction mechanisms are under investigation.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 43, no 28, p. 12739-12747
Keywords [en]
Sm2O3-NiO, Composite electrolyte, Proton conduction, Interfacial ionic conduction, Semiconductor-ionic fuel cells
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-240211DOI: 10.1016/j.ijhydene.2018.03.184ISI: 000439678700019Scopus ID: 2-s2.0-85046168913OAI: oai:DiVA.org:kth-240211DiVA, id: diva2:1271758
Conference
Forum of Hydrogen and Fuel Cells, DEC 11-13, 2017, Hubei Univ, Wuhan, PEOPLES R CHINA
Note

QC 20181218

Available from: 2018-12-18 Created: 2018-12-18 Last updated: 2018-12-18Bibliographically approved

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Zhu, Bin

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