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Efficient Cycling Utilization of Solar-Thermal Energy for Thermochromic Display with Controllable Heat Output

Abstract

Use of solar energy as a source of heat is an important method of storing and providing clean energy for thermal management. However, the difficulties associated with combining the high-energy storage and high-rate heat release of solar thermal fuels (STF) lowers their ability to output the heat controllably, and thus, prevents their application to temperature-sensitive or temperature-responsive systems. Herein, we first report on the closed-cycle utilization of photo-thermal energy for thermochromic displays by optimizing their solid-state high-rate heat output. By controlling the molecular interaction, a tri-azobenzene (Azo)-based templated assembly can be made to combine a maximum energy density of 150.3 Wh kg-1, a long half-life (1250 h), and a high power density of 3036.9 W kg-1. The STF film can induce a reversible color change in a complicated thermochromic-patterned display by releasing the heat to increase the temperature by 6–7 ℃. We also realize variable heat release by controlling the heating rate and temperatures to utilize photo-thermal energy efficiently. Efficient cycling utilization of photo-thermal energy using tri-Azo assembly could be used to harness photo-thermal power for thermal management.

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Publication details

The article was received on 06 Jun 2018, accepted on 10 Sep 2018 and first published on 10 Sep 2018


Article type: Communication
DOI: 10.1039/C8TA05333B
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Efficient Cycling Utilization of Solar-Thermal Energy for Thermochromic Display with Controllable Heat Output

    W. Yang, Y. Feng, Q. Si, Q. Yan, P. Long, L. Dong, L. Fu and W. Feng, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA05333B

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