Xun Shi
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Xun Shi has a total of 13 co-authors. Here are the top co-authors by number of shared publications:
C. Uher
University of Michigan 1 , Department of Physics, Ann Arbor, Michigan 48109, USA
2 shared publications- Lidong Chen
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
2 shared publications C.-P. Li
University of Michigan 1 , Department of Physics, Ann Arbor, Michigan 48109, USA
1 shared publication- Ctirad Uher
Department of Physics University of Michigan Ann Arbor Michigan USA
1 shared publication H. Kong
University of Michigan 1 , Department of Physics, Ann Arbor, Michigan 48109, USA
1 shared publicationH. Wang
Oak Ridge National Laboratory 4 Materials Science and Technology Division Oak Ridge, Tennessee 37831, USA
1 shared publication
Latest Publications
- 5 May 2008
- Published by AIP Publishing in Applied Physics Letters
- Vol. 92 (18) , 182101
Low thermal conductivity and high thermoelectric figure of merit in n-type BaxYbyCo4Sb12 double-filled skutterudites
Filled skutterudites are one of the most promising thermoelectric materials for power generation applications. The choice and concentration of filler atoms are key aspects for achieving high thermoelectric figure of merit values. We report on the high temperature thermoelectric properties in the double-filled skutterudites . The combination of Ba and Yb fillers inside the voids of the skutterudite structure provides a broad range of resonant phonon scattering and consequently a strong suppression in the lattice thermal conductivity is observed. A dimensionless thermoelectric figure of merit of 1.36 at is achievable for -type .- 5 May 2008
- Published by AIP Publishing in Applied Physics Letters
- Vol. 92 (18) , 182101
Low thermal conductivity and high thermoelectric figure of merit in n-type BaxYbyCo4Sb12 double-filled skutterudites
Filled skutterudites are one of the most promising thermoelectric materials for power generation applications. The choice and concentration of filler atoms are key aspects for achieving high thermoelectric figure of merit values. We report on the high temperature thermoelectric properties in the double-filled skutterudites . The combination of Ba and Yb fillers inside the voids of the skutterudite structure provides a broad range of resonant phonon scattering and consequently a strong suppression in the lattice thermal conductivity is observed. A dimensionless thermoelectric figure of merit of 1.36 at is achievable for -type .- 15 June 2007
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 101 (12) , 123525
Solid solubility of Ir and Rh at the Co sites of skutterudites
Phase diagrams for skutterudite solid solutions made by alloying at the Co site of skutterudite structure are studied by density functional theory. A limited solid solubility is observed for and , showing good agreement with experimental reports. A correlation between solubility and material preparation procedure is discussed. A simple method to synthesize skutterudite nanocomposites is proposed. Our calculations also demonstrate that is a compound with ordered structure rather than a random solid solution.- 15 June 2007
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 101 (12) , 123525
Solid solubility of Ir and Rh at the Co sites of skutterudites
Phase diagrams for skutterudite solid solutions made by alloying at the Co site of skutterudite structure are studied by density functional theory. A limited solid solubility is observed for and , showing good agreement with experimental reports. A correlation between solubility and material preparation procedure is discussed. A simple method to synthesize skutterudite nanocomposites is proposed. Our calculations also demonstrate that is a compound with ordered structure rather than a random solid solution.- 1 January 2007
- Published by Springer Nature in MRS Proceedings
- Vol. 1044
Enhanced Thermoelectric Figure of Merit in BaxYbyCo4Sb12 Skutterudites
We report on the development of an efficient n-type skutterudite based on the double-filled structure of CoSb3. The chosen filler species Ba and Yb have a large phonon contrast and this combination is very effective in lowering the lattice thermal conductivity. The highest figure of merit in excess of 1.3 is obtained near 800K and the figure of merit greater than unity persists down to temperatures of about 550K. The compounds are synthesized with high purity Co (99.998%) and Sb (99.9999%). In order to reduce the cost of the materials, we have also prepared filled skutterudites of similar composition but using less pure Co (99.8%) and Sb (99.999%). The figure of merit of these lower purity compounds reaches ZT = 1 at 800K with the materials' cost dramatically reduced.
- 1 January 2007
- Published by Springer Nature in MRS Proceedings
- Vol. 1044
Enhanced Thermoelectric Figure of Merit in BaxYbyCo4Sb12 Skutterudites
We report on the development of an efficient n-type skutterudite based on the double-filled structure of CoSb3. The chosen filler species Ba and Yb have a large phonon contrast and this combination is very effective in lowering the lattice thermal conductivity. The highest figure of merit in excess of 1.3 is obtained near 800K and the figure of merit greater than unity persists down to temperatures of about 550K. The compounds are synthesized with high purity Co (99.998%) and Sb (99.9999%). In order to reduce the cost of the materials, we have also prepared filled skutterudites of similar composition but using less pure Co (99.8%) and Sb (99.999%). The figure of merit of these lower purity compounds reaches ZT = 1 at 800K with the materials' cost dramatically reduced.