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Color-switchable electrochromic Co(OH)2/Ni(OH)2 nanofilms with ultrafast kinetics for multifunctional smart windows

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Title
Color-switchable electrochromic Co(OH)2/Ni(OH)2 nanofilms with ultrafast kinetics for multifunctional smart windows
Author(s)
Lee Y.-H.; Jin Soo Kang; Park J.-H.; Jiho Kang; Jo I.-R.; Yung-Eun Sung; Kwang-Soon Ahn
Subject
Electrochromic device, ; Electrodeposition, ; Hydroxides, ; Smart windows, ; Supercapacitor
Publication Date
2020-06
Journal
NANO ENERGY, v.72, pp.104720
Publisher
ELSEVIER SCIENCE BV
Abstract
© 2020 Elsevier Ltd. Electrochromic devices have received great attention due to the steep growth of smart window markets and demands from various emerging fields. Recently, elaborately designed materials not only enhanced coloring/bleaching performances but also provided additional functionality, energy storage, since electrochromism relies on capture and release of ions. Meanwhile, given that electrochromic devices are mostly targeted for large-scale applications such as smart windows, there are still significant needs for further advances, especially in terms of reliability and simplicity of materials and their manufacturing processes. In this study, double-layer hydroxide films are reported as energy-storable electrochromic materials with ultrafast transition kinetics. Core/shell-like Co(OH)2/Ni(OH)2 films produced within a minute of electrodepositions have capabilities for multiple color changes and show extremely fast optical responses that are comparable to state-of-the-arts. In addition, the electrodeposited hydroxide films manifest high capacitance and rate capabilities when applied as capacitors, with electrochromic kinetics an order of magnitude higher than those with similar level of capacities for energy storage
URI
https://pr.ibs.re.kr/handle/8788114/7851
DOI
10.1016/j.nanoen.2020.104720
ISSN
2211-2855
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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