Factors that Determine the Length Scale for Uniform Tinting in Dynamic Windows Based on Reversible Metal Electrodeposition

Strand, Michael T.; Barile, Christopher J.; Hernandez, Tyler S.; Dayrit, Teresa E.; Bertoluzzi, Luca; Slotcavage, Daniel J.; McGehee, Michael D.

doi:10.1021/acsenergylett.8b01781

Title: Factors that Determine the Length Scale for Uniform Tinting in Dynamic Windows Based on Reversible Metal Electrodeposition

Journal Article · Tue Oct 23 00:00:00 EDT 2018 · ACS Energy Letters

DOI:https://doi.org/10.1021/acsenergylett.8b01781· OSTI ID:1478628

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^[1]; Dayrit, Teresa E. ^[1]; Bertoluzzi, Luca ^[1]; Slotcavage, Daniel J. ^[1];

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Stanford Univ., Stanford, CA (United States)
Univ. of Nevada, Reno, NV (United States)
Stanford Univ., Stanford, CA (United States); Univ. of Colorado, Boulder, CO (United States)

Dynamic windows based on reversible metal electrodeposition are attractive compared to conventional electrochromics because they can have neutral color, high contrast, and potentially lower cost, yet they are not nearly as developed, and the design rules for making them function at large scale are not presented in the literature. We model the voltage drops that occur in the transparent electrodes to get insight on how to obtain uniform electrodeposition of metals over large area. By optimizing the surface and density of the Pt nanoparticles used to nucleate metal growth, we lower the nucleation barrier for electrodeposition by 70 mV. We show that the growth rate of the metal films is determined by diffusion rather than reaction kinetics, which makes it possible to achieve uniform film deposition over a range of potentials from -300 to -700 mV. We demonstrate 100 cm2 dynamic windows that are color-neutral and tint uniformly from a clear state (>60%) to a dark state (<5%) in less than 1 min.

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Research Organization:: Stanford Univ., CA (United States); Univ. of Colorado, Boulder, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0008226

OSTI ID:: 1478628

Alternate ID(s):: OSTI ID: 1688407

Journal Information:: ACS Energy Letters, Vol. 3; ISSN 2380-8195

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 32 works

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Cited By (3)

Hybrid dynamic windows using reversible metal electrodeposition and ion insertion Islam, Shakirul M.; Hernandez, Tyler S.; McGehee, Michael D. Nature Energy, Vol. 4, Issue 3 https://doi.org/10.1038/s41560-019-0332-3	journal	February 2019
Electrolyte Effects in Reversible Metal Electrodeposition for Optically Switching Thin Films Li, Judy Y.; Juarez-Rolon, Jose S.; Islam, Shakirul M. Journal of The Electrochemical Society, Vol. 166, Issue 12 https://doi.org/10.1149/2.0651912jes	journal	January 2019
Aqueous alkaline electrolytes for dynamic windows based on reversible metal electrodeposition with improved durability Miller, Darren D.; Li, Judy Y.; Islam, Shakirul M. Journal of Materials Chemistry C, Vol. 8, Issue 5 https://doi.org/10.1039/c9tc05546k	journal	January 2020