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Issue 4, 2017
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Redox reactions by thermally excited charge carriers: towards sensitized thermal cells

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Abstract

This study introduces a new type of system for the conversion of heat into electric power that does not require a temperature difference. This system does not rely on the Seebeck effect, and it has a simple layer-by-layer design. It is a sensitized thermal cell based on a dye-sensitized solar cell. This cell uses phonons, which are quantum expressions of heat, instead of photons. The open voltage and short-circuit current of the prototype cell, which is composed of β-FeSi2 as a semiconductor material and a solid copper ion conductor, were confirmed above 300 °C. The acquisition voltage was increased for 5 hours and continuously maintained at this value for at least 35 h, which suggests that this system functioned successfully. These generators enable all semiconductor materials to be applied three-dimensionally as heat sources, for example, in geothermal power plants, by burying the generator in a geothermal source.

Graphical abstract: Redox reactions by thermally excited charge carriers: towards sensitized thermal cells

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Publication details

The article was received on 22 Feb 2017, accepted on 12 May 2017 and first published on 12 May 2017


Article type: Communication
DOI: 10.1039/C7MH00108H
Citation: Mater. Horiz., 2017,4, 649-656
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    Redox reactions by thermally excited charge carriers: towards sensitized thermal cells

    S. Matsushita, A. Tsuruoka, E. Kobayashi, T. Isobe and A. Nakajima, Mater. Horiz., 2017, 4, 649
    DOI: 10.1039/C7MH00108H

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