Preparation method of cubic structure CoSbS thermoelectric compound
A cubic structure and compound technology, which is applied in the field of preparation of CoSbS-based thermoelectric materials, can solve the problems of high overall cost, inability to obtain high symmetry cubic structure thermoelectric materials, high cost of Sb single substance, etc., and achieve cheap constituent elements and crystal structure symmetry Controllable, short material cycle results
Inactive Publication Date: 2019-04-16
HENAN POLYTECHNIC UNIV
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The invention provides a preparation method of a cubic structure CoSbS thermoelectric compound. The method comprises the steps that 1), raw materials are placed in a ball milling jar, the raw materials comprise Co powder, Sb powder and S powder which are mixed according a certain mole ratio; 2), wet process ball milling; 3), products obtained after wet-process ball milling is conducted are dried to obtain a dried powder precursor; 4), the obtained powder precursor is pressed into a block; 5), high-pressure synthesis is conducted on the pressed block to obtain the cubic structure CoSbS compound, wherein the high-pressure synthesis in step 5) is conducted on a high-temperature high-pressure device, the synthesis process comprises the steps that a block sample is wrapped with a boron nitrideinsulation tube and put into a pyrophyllite synthesis block to be synthesized under high pressure, and the adopted synthesis pressure is greater than 2 GPa. The method has the advantages that the cubic structure CoSbS thermoelectric compound can be effectively obtained, the technology is simple, and the cycle is short.
Application Domain
Selenium/tellurium compounds with other elementsCobalt compounds +1
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