A wearable thermoelectric generator fabricated on a glass fabric

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Optimization of the thermoelectric figure of merit in the conducting polymer poly(3,4-ethylenedioxythiophene).

Olga Bubnova, Zia Ullah Khan, Abdellah Malti … (2011)

Thermoelectric generators (TEGs) transform a heat flow into electricity. Thermoelectric materials are being investigated for electricity production from waste heat (co-generation) and natural heat sources. For temperatures below 200 °C, the best commercially available inorganic semiconductors are bismuth telluride (Bi(2)Te(3))-based alloys, which possess a figure of merit ZT close to one. Most of the recently discovered thermoelectric materials with ZT>2 exhibit one common property, namely their low lattice thermal conductivities. Nevertheless, a high ZT value is not enough to create a viable technology platform for energy harvesting. To generate electricity from large volumes of warm fluids, heat exchangers must be functionalized with TEGs. This requires thermoelectric materials that are readily synthesized, air stable, environmentally friendly and solution processable to create patterns on large areas. Here we show that conducting polymers might be capable of meeting these demands. The accurate control of the oxidation level in poly(3,4-ethylenedioxythiophene) (PEDOT) combined with its low intrinsic thermal conductivity (λ=0.37 W m(-1) K(-1)) yields a ZT=0.25 at room temperature that approaches the values required for efficient devices. © 2011 Macmillan Publishers Limited. All rights reserved

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Quantum dot superlattice thermoelectric materials and devices.

T. C. Harman, P J Taylor, M Walsh … (2002)

PbSeTe-based quantum dot superlattice structures grown by molecular beam epitaxy have been investigated for applications in thermoelectrics. We demonstrate improved cooling values relative to the conventional bulk (Bi,Sb)2(Se,Te)3 thermoelectric materials using a n-type film in a one-leg thermoelectric device test setup, which cooled the cold junction 43.7 K below the room temperature hot junction temperature of 299.7 K. The typical device consists of a substrate-free, bulk-like (typically 0.1 millimeter in thickness, 10 millimeters in width, and 5 millimeters in length) slab of nanostructured PbSeTe/PbTe as the n-type leg and a metal wire as the p-type leg.

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High-performance flat-panel solar thermoelectric generators with high thermal concentration.

Thomas Kraemer, Bed Poudel, Hsien-Ping Feng … (2011)

The conversion of sunlight into electricity has been dominated by photovoltaic and solar thermal power generation. Photovoltaic cells are deployed widely, mostly as flat panels, whereas solar thermal electricity generation relying on optical concentrators and mechanical heat engines is only seen in large-scale power plants. Here we demonstrate a promising flat-panel solar thermal to electric power conversion technology based on the Seebeck effect and high thermal concentration, thus enabling wider applications. The developed solar thermoelectric generators (STEGs) achieved a peak efficiency of 4.6% under AM1.5G (1 kW m(-2)) conditions. The efficiency is 7-8 times higher than the previously reported best value for a flat-panel STEG, and is enabled by the use of high-performance nanostructured thermoelectric materials and spectrally-selective solar absorbers in an innovative design that exploits high thermal concentration in an evacuated environment. Our work opens up a promising new approach which has the potential to achieve cost-effective conversion of solar energy into electricity.

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Journal ID (publisher-id): EESNBY

Title: Energy & Environmental Science

Abbreviated Title: Energy Environ. Sci.

Publisher: Royal Society of Chemistry (RSC)

ISSN (Print): 1754-5692

ISSN (Electronic): 1754-5706

Publication date Created: 2014

Publication date (Print): 2014

Volume: 7

Issue: 6

Page: 1959

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DOI: 10.1039/c4ee00242c

SO-VID: d24e32f6-b52b-40a3-9dd1-c1257539f9f8

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A wearable thermoelectric generator fabricated on a glass fabric

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Abstract

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Digitizing Fabrication

Most cited references 36

Optimization of the thermoelectric figure of merit in the conducting polymer poly(3,4-ethylenedioxythiophene).

Quantum dot superlattice thermoelectric materials and devices.

High-performance flat-panel solar thermoelectric generators with high thermal concentration.

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