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Research Article Open Access

Solvothermal synthesis of nanosized cobalt antimonide for thermoelectrics

Nidhi Puri1, Raj K. Gupta1, Akhyaya K. Pattanaik2, Navin C. Mehra3, Ajit K. Mahapatro1,*,
Ram P. Tandon1,†

 

 

1Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India

2Department of Physics, Veer Surendra Sai University of Technology, Burla, Orissa, 768018India

3Department of Geology, University of Delhi, Delhi 10007, India

Adv. Mater. Proc., 2018, 3 (2), 99-102

DOI: 10.5185/amp.2018/846

Publication Date (Web):05 February 2018

Copyright © IAAM-VBRI Press

Abstract


Abstract

The present paper highlights the synthesis of cobalt antimonide (CoSb3) micro/nanostructures by following solvothermal technique with water as solvent. Recipe is optimized for preparation of refined CoSb3 compounds and demonstrated that a high processing temperature of 500 °C and long duration of 72 hr indicates presence of CoSb3 phase. The microstructures and composition of the as synthesized CoSb3 nanocomposites are characterized to achieve the optimized phase.
The morphologies as imaged using field emission scanning electron microscope resemble granules for the as-synthesized CoSb3. The phase purity and crystallographic structure of the as-synthesized CoSb3 nanocomposites as determined by XRD indicates the formation of the cubic phase of CoSb3 and agrees well with the JCPDS data mentioned for the highly pure CoSb3. The EDX estimates the elemental composition of Co and Sb in 1:3 stoichiometric ratio for the as-synthesized CoSb3. The currently prepared nanosized skutterudite CoSb3 material synthesized by solvothermal method could be utilized as active material for the development of highly ef´Čücient thermoelectric devices. Copyright © 2018 VBRI Press.

Keywords


Cobalt antimonide, solvothermal synthesis, thermoelectric materials.