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Issue 8, 2018
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Thermally-stable dynamic windows based on reversible metal electrodeposition from aqueous electrolytes

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Abstract

Dynamic windows based on the reversible electrodeposition of metals are a promising alternative to those utilizing electrochromic materials. In this manuscript, we develop 25 cm2 dynamic windows based on the reversible electrodeposition of Cu and Bi from aqueous gel electrolytes that switch with a contrast ratio of ∼80% in one minute. Although the aqueous electrolyte promotes rapid and uniform metal electrodeposition, its narrow operable temperature range limits practical implementation of the devices. To overcome this issue, we employ additives that prevent electrolyte freezing while still allowing for reversible metal electrodeposition. With properly-selected antifreezes that do not bind strongly to metal ions, the windows switch reversibly at temperatures down to −40 °C. The enhanced thermal stability of these systems is necessary for the practical implementation of metal-based dynamic windows.

Graphical abstract: Thermally-stable dynamic windows based on reversible metal electrodeposition from aqueous electrolytes

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Publication details

The article was received on 15 Nov 2017, accepted on 05 Feb 2018 and first published on 06 Feb 2018


Article type: Paper
DOI: 10.1039/C7TC05222G
Citation: J. Mater. Chem. C, 2018,6, 2132-2138
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    Thermally-stable dynamic windows based on reversible metal electrodeposition from aqueous electrolytes

    G. K. A. Alcaraz, J. S. Juarez-Rolon, N. A. Burpee and C. J. Barile, J. Mater. Chem. C, 2018, 6, 2132
    DOI: 10.1039/C7TC05222G

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