Solvothermal synthesis of nanosized CoSb(3) skutterudite.
Nanostructures enhance phonon scattering and improve the figure of merit of thermoelectric materials. Nanosized CoSb(3) skutterudite was synthesized by solvothermal methods using CoCl(2) and SbCl(3) as the precursors. A "two-step" model was suggested for the formation of CoSb(3) based on the X-ray diffraction analysis. The first step is the formation of cobalt diantimonide in the earlier stage during the synthesis process. Diantimonide was then combined with antimony atoms to form the skutterudite structured triantimonide, CoSb(3), in the later stage of the synthesis process as the second step. The synthesized CoSb(3) powders consist of irregular particles with sizes of about 20 nm and sheets of about 80 nm.
Xie
Jian
J
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
Zhao
Xin-Bing
XB
Mi
Jian-Li
JL
Cao
Gao-Shao
GS
Tu
Jiang-Ping
JP
D000965:Antimony / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D006358:Hot Temperature; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011208:Powders; D012997:Solvents / Q000737:chemistry
D011208:Powders; D012997:Solvents; D003035:Cobalt; D000965:Antimony