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Issue 9, 2011
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Sb2Te3 and Bi2Te3 based thermopower wave sources

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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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Supplementary files

Article information

29 Mar 2011
09 Jun 2011
First published
26 Jul 2011

Energy Environ. Sci., 2011,4, 3558-3564
Article type

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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