Issue 9, 2011

Sb2Te3 and Bi2Te3 based thermopower wave sources

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

Supplementary files

Article information

Article type
Paper
Submitted
29 Mar 2011
Accepted
09 Jun 2011
First published
26 Jul 2011

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

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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