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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
发表期刊JOURNAL OF ELECTRONIC MATERIALS
卷号42期号:7页码:1680-1687
摘要Titania 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.
文章类型Article
关键词Thermoelectric Materials Layer-cracking Nanostructures Boundary Scattering Point Defect Scattering Thermal Conductivity
WOS标题词Science & Technology ; Technology ; Physical Sciences
DOI10.1007/s11664-012-2384-z
研究领域[WOS]Engineering ; Materials Science ; Physics
关键词[WOS]NANOTUBES ; PERFORMANCE ; STABILITY ; CRYSTAL ; MODES ; MERIT
收录类别SCI
语种英语
WOS类目Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号WOS:000320890800065
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10046
专题中国科学院广州能源研究所
作者单位1.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
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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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