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Issue 9, 2011
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Sb2Te3 and Bi2Te3 based thermopower wave sources†

Sumeet Walia,*a   Rodney Weber,b   Sharath Sriram,a   Madhu Bhaskaran,a   Kay Latham,c   Serge Zhuiykovd  and  Kourosh Kalantar-zadeha  
Author affiliations

* Corresponding authors

a RMIT University, School of Electrical & Computer Engineering, Melbourne, Australia
E-mail: sumeet.walia@rmit.edu.au
Fax: +613 9925 2007
Tel: +613 99253254

b University of New South Wales at Australian Defence Force Academy, School of Physical, Environmental and Mathematical Sciences, Canberra, Australia

c RMIT University, School of Applied Sciences, Applied Chemistry, Melbourne, Australia

d Commonwealth Scientific Industrial Research Organisation (CSIRO), Material Science and Engineering Division, Melbourne, Australia

Abstract

Exothermic chemical reactions from nitrocellulose are coupled onto Sb2Te3 (antimony telluride) and Bi2Te3 (bismuth telluride) layers to generate self-propagating oscillating thermopower waves. P-type Sb2Te3 and N-type Bi2Te3 are employed due to their large Seebeck coefficients, high electrical conductivities and their complementary semiconducting properties. Sources based on both materials exhibit high power to mass ratios: up to 0.6 kW kg−1 for Sb2Te3 and 1.0 kW kg−1 for Bi2Te3. Having both P- and N-type semiconductors in the system, the combination of the outputs can be used for generating sources with polarities alternating in time.

Graphical abstract: Sb2Te3 and Bi2Te3 based thermopower wave sources

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Article information

https://doi.org/10.1039/C1EE01370J
Submitted
29 Mar 2011
Accepted
09 Jun 2011
First published
26 Jul 2011
Energy Environ. Sci., 2011,4, 3558-3564
Article type
Paper
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Sb2Te3 and Bi2Te3 based thermopower wave sources

S. Walia, R. Weber, S. Sriram, M. Bhaskaran, K. Latham, S. Zhuiykov and K. Kalantar-zadeh, Energy Environ. Sci., 2011, 4, 3558
DOI: 10.1039/C1EE01370J

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