Synthesis and thermoelectric properties of p-type- and n-type-filled skutterudite RyMxCo4−xSb12(R:Ce,Ba,Y;M:Fe,Ni)

2005 ◽  
Vol 97 (9) ◽  
pp. 093712 ◽  
Author(s):  
Xinfeng Tang ◽  
Qingjie Zhang ◽  
Lidong Chen ◽  
Takashi Goto ◽  
Toshio Hirai
Keyword(s):  
Thermoelectric Properties ◽  
Filled Skutterudite ◽  
P Type

Microstructure Investigation of Non-equilibrium Synthesized Filled Skutterudite CeFe4Sb12

2010 ◽  
Vol 1267 ◽  
Author(s):  
Juan Zhou ◽  
Qing Jie ◽  
Qiang Li
Keyword(s):  
Electron Microscopy ◽  
Grain Size ◽  
Grain Boundaries ◽  
Thermoelectric Properties ◽  
Conventional Solid State Reaction ◽  
Filled Skutterudite ◽  
Filled Skutterudites ◽  
Higher Carrier Mobility ◽  
P Type ◽  
Non Equilibrium

AbstractWe have prepared a variety of filled skutterudites through non-equilibrium synthesis by converting melt-spun ribbons into single phase polycrystalline bulk under pressure. In general, better thermoelectric properties are found in these samples. In this work, we performed microstructure characterization of non-equilibrium synthesized p-type filled skutterudite CeFe4Sb12 by X-ray diffraction, scanning electron microscopy and transmission electron microscopy in order to understand the structural origin of the improved thermoelectric properties. It is found that the non-equilibrium synthesized samples have smaller grain size and cleaner grain boundaries when compared to the samples prepared by the conventional solid-state reaction plus long term annealing. While smaller grain size can help reduce the lattice thermal conductivity, cleaner grain boundaries ensure higher carrier mobility and subsequently, higher electrical conductivity at the application temperatures.

Thermoelectric properties of P-type Yb-filled skutterudite YbxFeyCo4-ySb12

2011 ◽  
Vol 19 (10) ◽  
pp. 1390-1393 ◽  
Author(s):  
Chen Zhou ◽  
Donald Morelli ◽  
Xiaoyuan Zhou ◽  
Guoyu Wang ◽  
Ctirad Uher
Keyword(s):  
Thermoelectric Properties ◽  
Filled Skutterudite ◽  
P Type

scholarly journals Synthesis and thermoelectric properties of Ce(Ru0.67Rh0.33)4Sb12.

2003 ◽  
Vol 793 ◽  
Author(s):  
Geoff D. Staneff ◽  
Paul D. Asimow ◽  
Thierry Caillat
Keyword(s):  
Solid State ◽  
Thermoelectric Properties ◽  
Solid State Reaction ◽  
Temperature Limit ◽  
Nominal Composition ◽  
Charge Balance ◽  
Filled Skutterudite ◽  
Synthesis Routes ◽  
Carrier Charge ◽  
P Type

ABSTRACTExotic filled skutterudite compositions show promise for thermoelectric applications. Current work was undertaken with a nominal composition of Ce(Ru0.67Rh0.33)4Sb12 to experimentally verify its potential as an n-type thermoelectric material. Nominal electroneutrality was expected at 0.89 cerium filling and fully filled materials were expected to be strongly n-type. Filled precursors of the nominal composition were synthesized using straightforward solid state reaction techniques, but standard synthesis routes failed to produce a fully-filled homogenous phase. Instead, the filled thermoelectric Ce(Ru0.67Rh0.33)4Sb12 was synthesized using a combination of solid state reaction of elemental constituents and high pressure hot pressing. A range of pressure-temperature conditions was explored; the upper temperature limit of filled skutterudite in this system decreases with increasing pressure and disappears by 12 GPa. The optimal synthesis was performed in multi-anvil devices at 4–6 GPa pressure and dwell temperatures of 350–700 °C. rutheniumThe result of this work, a Ce(Ru0.67Rh0.33)4Sb12 fully filled skutterudite material, exhibited unexpected p-type conductivity and an electrical resistance of 1.755 mΩ-cm that increased with temperature. Thermal conductivity, Seebeck coefficient, and resistivity were measured on single phase samples. In this paper, we report the details of the synthesis routeand measured thermoelectric properties, speculate on the deviation from expected carrier charge balance, and discuss implications for other filled skutterudite systems.

Low-temperature thermoelectric properties of p-type and n-type filled skutterudite compounds Sm y (Fe1−x Ni x )4Sb12 prepared under high pressure

2020 ◽  
Vol 59 (6) ◽  
pp. 061004 ◽  
Author(s):  
Atchariya Phuangyod ◽  
Jun-ichi Hayashi ◽  
Yukihiro Kawamura ◽  
Cristina Artini ◽  
Giovanna Latronico ◽  
...  
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Thermoelectric Properties ◽  
Filled Skutterudite ◽  
P Type

Enhancing thermoelectric properties of p-type CoSb3 skutterudite by Fe doping

2021 ◽  
Vol 127 ◽  
pp. 105721
Author(s):  
Suchitra Yadav ◽  
Sujeet Chaudhary ◽  
Dinesh K. Pandya
Keyword(s):  
Thermoelectric Properties ◽  
Fe Doping ◽  
P Type

scholarly journals Giant Tuning of Electronic and Thermoelectric Properties by Epitaxial Strain in p-Type Sr-Doped LaCrO3 Transparent Thin Films

2021 ◽  
Author(s):  
Dong Han ◽  
Rahma Moalla ◽  
Ignasi Fina ◽  
Valentina M. Giordano ◽  
Marc d’Esperonnat ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermoelectric Properties ◽  
Epitaxial Strain ◽  
P Type

Optimization of the Thermoelectric Properties of p-Type Mg2–yLiyGe1–xSnx and Mg2–yLiyGe1–zSiz with x, z = 0.1 and 0.2

2021 ◽  
Author(s):  
Vidushi Galwadu Arachchige ◽  
Hasbuna Kamila ◽  
Aryan Sankhla ◽  
Léo Millerand ◽  
Silvana Tumminello ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
P Type

scholarly journals Mechanosynthesis and Thermoelectric Properties of Fe, Zn, and Cd-Doped P-Type Tetrahedrite: Cu12-xMxSb4S13

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3448
Author(s):  
Francisco Arturo López Cota ◽  
José Alonso Díaz-Guillén ◽  
Oscar Juan Dura ◽  
Marco Antonio López de la Torre ◽  
Joelis Rodríguez-Hernández ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Figure Of Merit ◽  
Powder Processing ◽  
High Energy ◽  
Secondary Phases ◽  
Ambient Conditions ◽  
Cadmium Sulfate ◽  
Electrical Conductivities ◽  
Compositional Changes ◽  
P Type

This contribution deals with the mechanochemical synthesis, characterization, and thermoelectric properties of tetrahedrite-based materials, Cu12-xMxSb4S13 (M = Fe2+, Zn2+, Cd2+; x = 0, 1.5, 2). High-energy mechanical milling allows obtaining pristine and substituted tetrahedrites, after short milling under ambient conditions, of stoichiometric mixtures of the corresponding commercially available binary sulfides, i.e., Cu2S, CuS, Sb2S3, and MS (M = Fe2+, Zn2+, Cd2+). All the target materials but those containing Cd were obtained as single-phase products; some admixture of a hydrated cadmium sulfate was also identified by XRD as a by-product when synthesizing Cu10Cd2Sb4S13. The as-obtained products were thermally stable when firing in argon up to a temperature of 350–400 °C. Overall, the substitution of Cu(II) by Fe(II), Zn(II), or Cd(II) reduces tetrahedrites’ thermal and electrical conductivities but increases the Seebeck coefficient. Unfortunately, the values of the thermoelectric figure of merit obtained in this study are in general lower than those found in the literature for similar samples obtained by other powder processing methods; slight compositional changes, undetected secondary phases, and/or deficient sintering might account for some of these discrepancies.

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