skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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 mV to -700 mV. As a result, we demonstrate 100 cm 2 dynamic windows that are color-neutral and tint uniformly from a clear state (> 60%) to a dark state (< 5%) in less than one minute.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [3]
  1. Stanford Univ., Stanford, CA (United States)
  2. Univ. of Nevada, Reno, NV (United States)
  3. Stanford Univ., Stanford, CA (United States); Univ. of Colorado, Boulder, CO (United States)
Publication Date:
Research Org.:
Stanford Univ., CA (United States); Univ. of Colorado, Boulder, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1478628
Grant/Contract Number:  
EE0008226
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Energy Letters
Additional Journal Information:
Journal Volume: 3; Journal ID: ISSN 2380-8195
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Strand, Michael T., Barile, Christopher J., Hernandez, Tyler S., Dayrit, Teresa E., Bertoluzzi, Luca, Slotcavage, Daniel J., and McGehee, Michael D. Factors that Determine the Length Scale for Uniform Tinting in Dynamic Windows Based on Reversible Metal Electrodeposition. United States: N. p., 2018. Web. doi:10.1021/acsenergylett.8b01781.
Strand, Michael T., Barile, Christopher J., Hernandez, Tyler S., Dayrit, Teresa E., Bertoluzzi, Luca, Slotcavage, Daniel J., & McGehee, Michael D. Factors that Determine the Length Scale for Uniform Tinting in Dynamic Windows Based on Reversible Metal Electrodeposition. United States. doi:10.1021/acsenergylett.8b01781.
Strand, Michael T., Barile, Christopher J., Hernandez, Tyler S., Dayrit, Teresa E., Bertoluzzi, Luca, Slotcavage, Daniel J., and McGehee, Michael D. Tue . "Factors that Determine the Length Scale for Uniform Tinting in Dynamic Windows Based on Reversible Metal Electrodeposition". United States. doi:10.1021/acsenergylett.8b01781.
@article{osti_1478628,
title = {Factors that Determine the Length Scale for Uniform Tinting in Dynamic Windows Based on Reversible Metal Electrodeposition},
author = {Strand, Michael T. and Barile, Christopher J. and Hernandez, Tyler S. and Dayrit, Teresa E. and Bertoluzzi, Luca and Slotcavage, Daniel J. and McGehee, Michael D.},
abstractNote = {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 mV to -700 mV. As a result, 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 one minute.},
doi = {10.1021/acsenergylett.8b01781},
journal = {ACS Energy Letters},
issn = {2380-8195},
number = ,
volume = 3,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on October 23, 2019
Publisher's Version of Record

Save / Share: