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La0.1SrxCa0.9-xMnO3-delta-Sm0.2Ce0.8O1.9 composite material for novel low temperature solid oxide fuel cells
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
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2017 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 42, no 27, 17552-17558 p.Article in journal (Refereed) Published
Abstract [en]

Lowering the operating temperature of the solid oxide fuel cells (SOFCs) is one of the world R&D tendencies. Exploring novel electrolytes possessing high ionic conductivity at low temperature becomes extremely important with the increasing demands of the energy conversion technologies. In this work, perovskite La0.1SrxCa0.9-xMnO3-delta (LSCM) materials were synthesized and composited with the ionic conductor Sm0.2Ce0.8O1.9 (SDC). The LSCM SDC composite was sandwiched between two nickel foams coated with semiconductor Ni0.8Co0.15Al0.05LiO2-delta (NCAL) to form the fuel cell device. The strontium content in the LSCM and the ratios of LSCM to SDC in the LSCM-SDC composite have significant effects on the electrical properties and fuel cell performances. The best performance has been achieved from LSCM-SDC composite with a weight ratio of 2:3. The fuel cells showed OCV over 1.0 V and excellent maximum output power density of 800 mW cm(-2) at 550 degrees C. Device processes and ionic transport processes were also discussed.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 42, no 27, 17552-17558 p.
Keyword [en]
Perovskite ionic-conductor composite material, Electrolyte, Low temperature SOFCs
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-212944DOI: 10.1016/j.ijhydene.2017.05.158ISI: 000406725500064Scopus ID: 2-s2.0-85020691094OAI: oai:DiVA.org:kth-212944DiVA: diva2:1136103
Conference
2nd International Symposium on Catalytic Science and Technology in Sustainable Energy and Environment (EECAT), Oct 11-14, 2016, Tianjin, China
Funder
Swedish Research Council, 621-2011-4983
Note

QC 20170825

Available from: 2017-08-25 Created: 2017-08-25 Last updated: 2017-08-25Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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