naa a22 4500 510803083 CHVBK 20180411083404.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-012-2384-z doi (NATIONALLICENCE)springer-10.1007/s11664-012-2384-z Titania Embedded with Nanostructured Sodium Titanate: Reduced Thermal Conductivity for Thermoelectric Application [Elektronische Daten] [Chengyan Liu, Lei Miao, Jianhua Zhou, Sakae Tanemura, Dongli Hu, Hui Gu] 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 N2 adsorption-desorption experiments. In thermoelectric investigations, this nanocomposite has reduced thermal conductivity, where the minimum reaches about 2.4W/mK at 700°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. TMS, 2012 Thermoelectric materials nationallicence layer-cracking nanostructures nationallicence boundary scattering nationallicence point defect scattering nationallicence thermal conductivity nationallicence Liu Chengyan Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut Miao Lei Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut Zhou Jianhua Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut Tanemura Sakae Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut Hu Dongli State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, People's Republic of China aut Gu Hui State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, People's Republic of China aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1680-1687 0361-5235 42:7<1680 2013 42 11664 https://doi.org/10.1007/s11664-012-2384-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2384-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Chengyan Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Miao Lei Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Zhou Jianhua Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Tanemura Sakae Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Hu Dongli State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, People's Republic of China aut NATIONALLICENCE 700 1- Gu Hui State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, People's Republic of China aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1680-1687 0361-5235 42:7<1680 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer