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Large Thermal Conductivity Reduction Induced by La/O Vacancies in the Thermoelectric LaCoO3 System
Wang, Yang1,2; Li, Fang3; Xu, Luxiang4,5; Sui, Yu1,6; Wang, Xianjie1; Su, Wenhui1; Liu, Xiaoyang7
Corresponding AuthorWang, Yang(wang_yang@ntu.edu.sg)
2011-05-16
Source PublicationINORGANIC CHEMISTRY
ISSN0020-1669
Volume50Issue:10Pages:4412-4416
AbstractA series of compact La/O-vacant La1-xCoO3-y compounds were prepared by a cold high-pressure procedure, and their thermoelectric (TE) properties were investigated. Compared with the ion-substituted hole-type LaCoO3 systems (e.g., La1-xSrxCoO3), the thermal conduction of La1-xCoO3-y is noticeably reduced by the La/O vacancies, whereas the electric transport is less influenced, which results in an efficient ZT enhancement. We demonstrate that the large thermal conductivity reduction originates from the strong point-defect scattering, and La1-xCoO3-y can be rationalized as a partially filled solid solution: La1-x square xCoO3-y square(y), where square denotes a vacancy. Such intrinsic thermal conductivity suppression provides an effective pathway for the design of better TE materials.
DOI10.1021/ic200178x
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Inorganic & Nuclear
WOS IDWOS:000290246600031
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/104023
Collection中国科学院金属研究所
Corresponding AuthorWang, Yang
Affiliation1.Harbin Inst Technol, Dept Phys, Ctr Condensed Matter Sci & Technol CCMST, Harbin 150001, Peoples R China
2.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore
3.SW Petr Univ, Sch Petr Engn, Chengdu 610500, Peoples R China
4.Sichuan Normal Univ, Lab Low Dimens Struct Phys, Inst Solid State Phys, Chengdu 610068, Peoples R China
5.Sichuan Normal Univ, Sch Phys & Elect Engn, Chengdu 610068, Peoples R China
6.Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China
7.Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yang,Li, Fang,Xu, Luxiang,et al. Large Thermal Conductivity Reduction Induced by La/O Vacancies in the Thermoelectric LaCoO3 System[J]. INORGANIC CHEMISTRY,2011,50(10):4412-4416.
APA Wang, Yang.,Li, Fang.,Xu, Luxiang.,Sui, Yu.,Wang, Xianjie.,...&Liu, Xiaoyang.(2011).Large Thermal Conductivity Reduction Induced by La/O Vacancies in the Thermoelectric LaCoO3 System.INORGANIC CHEMISTRY,50(10),4412-4416.
MLA Wang, Yang,et al."Large Thermal Conductivity Reduction Induced by La/O Vacancies in the Thermoelectric LaCoO3 System".INORGANIC CHEMISTRY 50.10(2011):4412-4416.
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