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Titania Embedded with Nanostructured Sodium Titanate: Reduced Thermal Conductivity for Thermoelectric Application
Liu, Chengyan1,2; Miao, Lei1; Zhou, Jianhua1; Tanemura, Sakae1,3,4; Hu, Dongli5; Gu, Hui5
2013-07-01
Source PublicationJOURNAL OF ELECTRONIC MATERIALS
Volume42Issue:7Pages:1680-1687
AbstractTitania embedded with layer-cracking nanostructures (sodium titanate) was synthesized by a hydrothermal method and a subsequent sintering process. The structure and morphology were determined by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and N-2 adsorption-desorption experiments. In thermoelectric investigations, this nanocomposite has reduced thermal conductivity, where the minimum reaches about 2.4 W/m K at 700A degrees C. This value is relatively low among the transition-metal oxides. Strong boundary scattering at the interfaces of the layered nanostructures and point defect scattering resulting from volatilization of Na+ ions seem to be main reasons for the suppression of phonon heat transfer. On the other hand, the power factor shows no apparent deterioration. Our results suggest that introduction of proper layer-cracking nanostructures into thermoelectric hosts might be effective to enhance their performance.
SubtypeArticle
KeywordThermoelectric Materials Layer-cracking Nanostructures Boundary Scattering Point Defect Scattering Thermal Conductivity
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1007/s11664-012-2384-z
WOS Subject ExtendedEngineering ; Materials Science ; Physics
WOS KeywordNANOTUBES ; PERFORMANCE ; STABILITY ; CRYSTAL ; MODES ; MERIT
Indexed BySCI
Language英语
WOS SubjectEngineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000320890800065
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10046
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Japan Fine Ceram Ctr, Atsuta Ku, Nagoya, Aichi 4568587, Japan
4.Nagoya Inst Technol, Powder Technol PJ Lab, Showa Ku, Nagoya, Aichi 4668555, Japan
5.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
Recommended Citation
GB/T 7714
Liu, Chengyan,Miao, Lei,Zhou, Jianhua,et al. Titania Embedded with Nanostructured Sodium Titanate: Reduced Thermal Conductivity for Thermoelectric Application[J]. JOURNAL OF ELECTRONIC MATERIALS,2013,42(7):1680-1687.
APA Liu, Chengyan,Miao, Lei,Zhou, Jianhua,Tanemura, Sakae,Hu, Dongli,&Gu, Hui.(2013).Titania Embedded with Nanostructured Sodium Titanate: Reduced Thermal Conductivity for Thermoelectric Application.JOURNAL OF ELECTRONIC MATERIALS,42(7),1680-1687.
MLA Liu, Chengyan,et al."Titania Embedded with Nanostructured Sodium Titanate: Reduced Thermal Conductivity for Thermoelectric Application".JOURNAL OF ELECTRONIC MATERIALS 42.7(2013):1680-1687.
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