Solvothermal Synthesis and Thermoelectric Properties of AgPbmSbTem+2 Sub-Microwires

• 1、The State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
• 2、College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016. China

Abstract：A simple, surfactant-free, and high-efficient solvothermal approach has been developed to synthesize AgPbmSbTem+2 multicomponent thermoelectric sub-microwires. The AgPbmSbTem+2 nanostructures were prepared using Sb2(NO3)3, Pb(NO3)2, AgNO3 and Na2TeO3 as the reactants, ethylenediamine and ethylene diamine tetraacetic acid as the reducing and complexing agents. A diffusion-limited reaction mechanism was proposed to explain the formation of the nanostructures. The Seebeck coefficient of the bulk pellet pressed by the obtained AgPb18SbTe20 sub-microwires exhibits 22% enhancement over that of the corresponding bulk at room temperature. The synthetic route can be applied to gain other multicomponent telluride nanostructures.

keywords： solvothermal synthesis AgPbmSbTem+2 thermoelectric materials

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