Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Hybrid dynamic windows using reversible metal electrodeposition and ion insertion

Journal Article · · Nature Energy
 [1];  [2];  [3];  [4]
  1. Univ. of Nevada, Reno, NV (United States); University of Colorado Boulder
  2. Stanford Univ., CA (United States); Univ. of Colorado, Boulder, CO (United States)
  3. Univ. of Colorado, Boulder, CO (United States)
  4. Univ. of Nevada, Reno, NV (United States)
Dynamic windows with electronically controlled transmission reduce glare without obstructing views while increasing the energy efficiency of buildings and automobiles via lighting, heating and cooling savings. Electrochromic materials, which change colour with voltage, are widely explored for use in dynamic windows, but they have not been extensively commercialized due to problems associated with colour, cost, switching speed and durability. Here, we develop a class of dynamic windows that combines reversible metal electrodeposition with ion insertion chemistry. These devices function through the reversible electroplating of Bi and Cu at the working electrode and Li+ insertion in a nickel oxide counter electrode. In one minute, 100 cm2 windows uniformly switch between a clear state with 75% transmission and a colour-neutral black state possessing 10% transmission, which represents a significant improvement over previous metal-based architectures. We demonstrate that these hybrid windows cycle at least 4,000 times without degradation and are compatible with flexible substrates. Finally, we discuss how this approach can be used to design practical large-scale windows.
Research Organization:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
Grant/Contract Number:
EE0008226
OSTI ID:
1688410
Journal Information:
Nature Energy, Journal Name: Nature Energy Journal Issue: 3 Vol. 4; ISSN 2058-7546
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (29)

Hybrid Materials and Polymer Electrolytes for Electrochromic Device Applications journal May 2012
Electrochromic Performance of Nickel Oxide Thin Film: Synthesis via Electrodeposition Technique: Electrochromic Performance of Nickel Oxide Thin journal March 2016
Optically passive cerium containing counter-electrodes for electrochromic devices journal January 1999
Electrodeposition of copper: the nucleation mechanisms journal July 2002
Optical properties and electrochromic characterization of sol–gel deposited ceria films journal June 2001
Electrochromic organic and polymeric materials for display applications journal January 2006
Dynamic Windows with Neutral Color, High Contrast, and Excellent Durability Using Reversible Metal Electrodeposition journal September 2017
Electrochromic properties of porous NiO thin films prepared by a chemical bath deposition journal June 2008
Comparison of electrochromic properties of Ni1−xO in lithium and lithium-free aprotic electrolytes: From Ni1−xO pigment coatings to flexible electrochromic devices journal January 2014
Electrolytes-relevant cyclic durability of nickel oxide thin films as an ion-storage layer in an all-solid-state complementary electrochromic device journal December 2016
Electrochromics for smart windows: Oxide-based thin films and devices journal August 2014
Electrochromic nickel oxide films and their compatibility with potassium hydroxide and lithium perchlorate in propylene carbonate: Optical, electrochemical and stress-related properties journal August 2014
Polymer–Nanoparticle Electrochromic Materials that Selectively Modulate Visible and Near-Infrared Light journal February 2016
Mechanistic Insights into the Coloration, Evolution, and Degradation of NiO x Electrochromic Anodes journal July 2018
Small Molecule Anchored to Mesoporous ITO for High-Contrast Black Electrochromics journal November 2016
Bistable Black Electrochromic Windows Based on the Reversible Metal Electrodeposition of Bi and Cu journal November 2017
Factors that Determine the Length Scale for Uniform Tinting in Dynamic Windows Based on Reversible Metal Electrodeposition journal October 2018
Photoresponsive Molecular Switch for Regulating Transmembrane Proton-Transfer Kinetics journal November 2015
Out of a niche journal February 2006
Eliminating degradation and uncovering ion-trapping dynamics in electrochromic WO3 thin films journal August 2015
Electrochromics for smart windows: thin films of tungsten oxide and nickel oxide, and devices based on these journal January 2007
Nanostructured electrochromic smart windows: traditional materials and NIR-selective plasmonic nanocrystals journal January 2014
Thermally-stable dynamic windows based on reversible metal electrodeposition from aqueous electrolytes journal January 2018
Photochemical stability of electrochromic polymers and devices journal January 2013
Leveling and Microstructural Effects of Additives for Copper Electrodeposition journal July 1999
Benzotriazole as an Additive for Copper Electrodeposition Influence of Triazole Ring Substitution journal January 2000
The Intercalation of Lithium in Nickel Oxide and Its Electrochromic Properties journal January 1990
Mechanism of Electrochemical Deposition and Coloration of Electrochromic V2O5 Nano Thin Films: an In Situ X-Ray Spectroscopy Study journal October 2015
Climate Control Load Reduction Strategies for Electric Drive Vehicles in Warm Weather conference April 2015

Cited By (10)

Overcoming the Technical Challenges in Al Anode–Based Electrochromic Energy Storage Windows journal September 2019
A Long‐Life Battery‐Type Electrochromic Window with Remarkable Energy Storage Ability journal January 2020
A Long‐Life Battery‐Type Electrochromic Window with Remarkable Energy Storage Ability journal March 2020
Simultaneously enabling dynamic transparency control and electrical energy storage via electrochromism journal January 2020
High-performance electrochromic films with fast switching times using transparent/conductive nanoparticle-modulated charge transfer journal January 2019
A multifunctional smart window: detecting ultraviolet radiation and regulating the spectrum automatically journal January 2019
Aqueous alkaline electrolytes for dynamic windows based on reversible metal electrodeposition with improved durability journal January 2020
Controllable fabrication of α-Ni(OH) 2 thin films with preheating treatment for long-term stable electrochromic and energy storage applications journal January 2020
Electrolyte Effects in Reversible Metal Electrodeposition for Optically Switching Thin Films journal January 2019
Dynamic Windows Based on Reversible Metal Electrodeposition with Enhanced Functionality journal January 2019