An easily sintered, chemically stable, barium zirconate-based proton conductor for high-performance proton-conducting solid oxide fuel cells

Handle URI:
http://hdl.handle.net/10754/566071
Title:
An easily sintered, chemically stable, barium zirconate-based proton conductor for high-performance proton-conducting solid oxide fuel cells
Authors:
Sun, Wenping; Shi, Zhen; Liu, Mingfei; Bi, Lei; Liu, Wei
Abstract:
Yttrium and indium co-doped barium zirconate is investigated to develop a chemically stable and sintering active proton conductor for solid oxide fuel cells (SOFCs). BaZr0.8Y0.2-xInxO3- δ possesses a pure cubic perovskite structure. The sintering activity of BaZr0.8Y0.2-xInxO3- δ increases significantly with In concentration. BaZr0.8Y0.15In0.05O3- δ (BZYI5) exhibits the highest total electrical conductivity among the sintered oxides. BZYI5 also retains high chemical stability against CO2, vapor, and reduction of H2. The good sintering activity, high conductivity, and chemical stability of BZYI5 facilitate the fabrication of durable SOFCs based on a highly conductive BZYI5 electrolyte film by cost-effective ceramic processes. Fully dense BZYI5 electrolyte film is successfully prepared on the anode substrate by a facile drop-coating technique followed by co-firing at 1400 °C for 5 h in air. The BZYI5 film exhibits one of the highest conductivity among the BaZrO3-based electrolyte films with various sintering aids. BZYI5-based single cells output very encouraging and by far the highest peak power density for BaZrO3-based proton-conducting SOFCs, reaching as high as 379 mW cm-2 at 700 °C. The results demonstrate that Y and In co-doping is an effective strategy for exploring sintering active and chemically stable BaZrO3-based proton conductors for high performance proton-conducting SOFCs. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
Wiley-Blackwell
Journal:
Advanced Functional Materials
Issue Date:
25-Jul-2014
DOI:
10.1002/adfm.201401478
Type:
Article
ISSN:
1616301X
Sponsors:
This work was supported by the Ministry of Science and Technology of China (Grant No. 2012CB215403).
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSun, Wenpingen
dc.contributor.authorShi, Zhenen
dc.contributor.authorLiu, Mingfeien
dc.contributor.authorBi, Leien
dc.contributor.authorLiu, Weien
dc.date.accessioned2015-08-12T09:27:01Zen
dc.date.available2015-08-12T09:27:01Zen
dc.date.issued2014-07-25en
dc.identifier.issn1616301Xen
dc.identifier.doi10.1002/adfm.201401478en
dc.identifier.urihttp://hdl.handle.net/10754/566071en
dc.description.abstractYttrium and indium co-doped barium zirconate is investigated to develop a chemically stable and sintering active proton conductor for solid oxide fuel cells (SOFCs). BaZr0.8Y0.2-xInxO3- δ possesses a pure cubic perovskite structure. The sintering activity of BaZr0.8Y0.2-xInxO3- δ increases significantly with In concentration. BaZr0.8Y0.15In0.05O3- δ (BZYI5) exhibits the highest total electrical conductivity among the sintered oxides. BZYI5 also retains high chemical stability against CO2, vapor, and reduction of H2. The good sintering activity, high conductivity, and chemical stability of BZYI5 facilitate the fabrication of durable SOFCs based on a highly conductive BZYI5 electrolyte film by cost-effective ceramic processes. Fully dense BZYI5 electrolyte film is successfully prepared on the anode substrate by a facile drop-coating technique followed by co-firing at 1400 °C for 5 h in air. The BZYI5 film exhibits one of the highest conductivity among the BaZrO3-based electrolyte films with various sintering aids. BZYI5-based single cells output very encouraging and by far the highest peak power density for BaZrO3-based proton-conducting SOFCs, reaching as high as 379 mW cm-2 at 700 °C. The results demonstrate that Y and In co-doping is an effective strategy for exploring sintering active and chemically stable BaZrO3-based proton conductors for high performance proton-conducting SOFCs. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.description.sponsorshipThis work was supported by the Ministry of Science and Technology of China (Grant No. 2012CB215403).en
dc.publisherWiley-Blackwellen
dc.subjectAcceptor-doped barium zirconateen
dc.subjectElectrical conductivityen
dc.subjectHigh-temperature proton conductorsen
dc.subjectSintering abilityen
dc.subjectSolid oxide fuel cellsen
dc.titleAn easily sintered, chemically stable, barium zirconate-based proton conductor for high-performance proton-conducting solid oxide fuel cellsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalAdvanced Functional Materialsen
dc.contributor.institutionCAS Key Laboratory of Materials for Energy, Conversion and Collaborative Innovation Center of Suzhou Nano Science and Technology University of Science and Technology of China (USTC) Hefei 230026 P.R. Chinaen
dc.contributor.institutionSchool of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singaporeen
dc.contributor.institutionKey Laboratory of Materials Physics, Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 P. R. Chinaen
dc.contributor.institutionCenter for Innovative Fuel Cell and Battery Technologies School of Materials Science and Engineering Georgia Institute of Technology Atlanta, GA 30332 USAen
kaust.authorBi, Leien
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