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WFRF:(Chen Yi Bin)
 

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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005497naa a2200601 4500
001oai:DiVA.org:kth-196653
003SwePub
008161117s2016 | |||||||||||000 ||eng|
009oai:DiVA.org:uu-308808
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1966532 URI
0247 a https://doi.org/10.1039/c6ta05763b2 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3088082 URI
040 a (SwePub)kthd (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Wang, Baoyuanu KTH,Energiteknik,Hubei University, China,Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Hubei, Peoples R China.;Royal Inst Technol, Dept Energy Technol, SE-10044 Stockholm, Sweden.4 aut0 (Swepub:kth)PI000000
2451 0a Preparation and characterization of Sm and Ca co-doped ceria-La0.6Sr0.4Co0.2Fe0.8O3-delta semiconductor-ionic composites for electrolyte-layer-free fuel cells
264 c 2016
264 1b Royal Society of Chemistry,c 2016
338 a print2 rdacarrier
500 a QC 20161122
520 a A series of Sm and Ca co-doped ceria, i.e. Ca0.04Ce0.96-xSmxO2-delta (x = 0, 0.09, 0.16, and 0.24) (SCDC), were synthesized by a co-precipitation method. Detailed morphology, composition, crystal structure and electrochemical properties of the prepared materials were characterized. The results revealed that Sm and Ca co-doping could enhance the ionic conductivity in comparison with that of single Ca-doped samples. The composition as Ca0.04Ce0.80Sm0.16O2-delta exhibited a highest ionic conductivity of 0.039 S cm(-1) at 600 degrees C in comparison with the rest of the series, and the optimal ionic conductivity can be interpreted by the coupling effect of oxygen vacancies and mismatch between the dopant ionic radius and critical radius. Composite formation between the semiconductor La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) and the as-prepared SCDC contributed to a remarkable improvement in the ionic conductivity, an unexpectedly high ionic conductivity of 0.188 S cm(-1) was obtained for LSCF-SCDC composites at 600 degrees C, which was four times higher than that of pure SCDC. Using transmission electron microscopy and spectroscopy approaches, we detected an enrichment of oxygen in the LSCF-SCDC interface region and a depletion of oxygen vacancies in LSCF-SCDC and LSCF-LSCF grain boundaries was significantly mitigated, which resulted in the enhancement of ionic conductivity of semiconductor-ionic LSCF-SCDC composites. The electrolyte-layer-free fuel cell (EFFC) fabricated from the LSCF-SCDC semiconductor-ionic membrane demonstrated excellent performances, e.g. 814 mW cm(-2) at 550 degrees C for using the LSCF-Ca0.04Ce0.80Sm0.16O2-delta (SCDC2).
650 7a NATURVETENSKAPx Kemix Materialkemi0 (SwePub)104032 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Materials Chemistry0 (SwePub)104032 hsv//eng
653 a Calcium
653 a Crystal structure
653 a Doping (additives)
653 a Electrolytes
653 a Fuel cells
653 a Grain boundaries
653 a High resolution transmission electron microscopy
653 a Ionic conductivity
653 a Oxygen
653 a Precipitation (chemical)
653 a Semiconductor doping
653 a Semiconductor insulator boundaries
653 a Transmission electron microscopy
7001 a Wang, Yiu Max Planck Inst Solid State Res MPI FKF, Stuttgart Ctr Electron Microscopy StEM, Heisenbergstr 1, D-70569 Stuttgart, Germany.4 aut
7001 a Fan, Liangdongu Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Hubei, Peoples R China.;Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Guangdong, Peoples R China.4 aut
7001 a Cai, Yixiaou Uppsala universitet,Tillämpad materialvetenskap4 aut0 (Swepub:uu)yixca796
7001 a Xia, Chenu KTH,Energiteknik,Hubei University, China,Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Hubei, Peoples R China.;Royal Inst Technol, Dept Energy Technol, SE-10044 Stockholm, Sweden.4 aut0 (Swepub:kth)u158xmoe
7001 a Liu, Yanyanu KTH,Energiteknik,Royal Inst Technol, Dept Energy Technol, SE-10044 Stockholm, Sweden.4 aut0 (Swepub:kth)u1plmvom
7001 a Raza, Rizwanu COMSATS Inst Informat Technol, Dept Phys, Islamabad, Pakistan.4 aut
7001 a van Aken, Peter A.u Max Planck Inst Solid State Res MPI FKF, Stuttgart Ctr Electron Microscopy StEM, Heisenbergstr 1, D-70569 Stuttgart, Germany.4 aut
7001 a Wang, Haou Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Hubei, Peoples R China.4 aut
7001 a Zhu, Binu KTH,Energiteknik,Hubei University, China,Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Hubei, Peoples R China.;Royal Inst Technol, Dept Energy Technol, SE-10044 Stockholm, Sweden.4 aut0 (Swepub:kth)u1ybbo7e
7102 a KTHb Energiteknik4 org
7730 t Journal of Materials Chemistry Ad : Royal Society of Chemistryg 4:40, s. 15426-15436q 4:40<15426-15436x 2050-7488x 2050-7496
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-196653
8564 8u https://doi.org/10.1039/c6ta05763b
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-308808

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