Large Thermal Conductivity Reduction Induced by La/O Vacancies in the Thermoelectric LaCoO3 System

doi:10.1021/ic200178x

IMR OpenIR

	Large Thermal Conductivity Reduction Induced by La/O Vacancies in the Thermoelectric LaCoO3 System
	Wang, Yang 1,2; Li, Fang 3; Xu, Luxiang 4,5; Sui, Yu 1,6; Wang, Xianjie 1; Su, Wenhui 1; Liu, Xiaoyang 7
通讯作者	Wang, Yang(wang_yang@ntu.edu.sg)
	2011-05-16
发表期刊	INORGANIC CHEMISTRY
ISSN	0020-1669
卷号	50 期号:10 页码:4412-4416
摘要	A 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.
DOI	10.1021/ic200178x
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Inorganic & Nuclear
WOS记录号	WOS:000290246600031
出版者	AMER CHEMICAL SOC
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/104024
专题	中国科学院金属研究所
通讯作者	Wang, Yang
作者单位	1.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
推荐引用方式 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.