Self-Driven Ni-Based Electrochromic Devices for Energy-Efficient Smart Windows

Zhang, He1,2; Feng, Jiayun1; Sun, Fangyuan2; Zhou, Dongyan2; Cao, Ge2; Wang, Shang1; Hu, Xuanyi1; Ma, Jingxuan1; Su, Fengyu3; Tian, Yanqing2,4,5; Tian, Yanhong1,4,5

2023

10.1002/admt.202201688

Advanced Materials Technologies   Impact Factor & Quartile

2365-709X

Electrochromic devices (ECDs) with adjustable transmittance have opened new opportunities to the development of smart windows for energy-efficiency building. However, the switching between colored and bleached state of conventional ECD will bring extra energy consumption, the design of high-performance ECD with low consumption is still an elusive goal. To address this issue, a self-driven and energy-saving Ni anode-based ECD using Prussian blue as electrochromic material is developed. During the day, it can be colored by solar energy. By contrast, it can spontaneously bleach when the ECD's anode and cathode are short-circuiting using the internal redox potential during the night. It is worth noting that no extra energy is inputted in the coloring-bleaching cycle. In comparison with the ECD using electrolyte with high Ni2+ (K+:Ni2+ = 1:9) or high K+ (K+:Ni2+ = 9:1) concentration with poor optical contrast and cyclic stability (failed <100 cycles), the Ni-based ECD with the electrolyte containing equal amount of K+ and Ni2+ exhibits a high optical contrast (39.45%), good coloration response time (6 s), and excellent stability (1000 cycles). These properties suggest that the Ni-based electrochromic configuration is expected to be a catalyst for the development of energy-storage EC smart window in the future.

electrochromic devices Ni ions Prussian blue smart windows

SCI

English

Corresponding

National Natural Science Foundation of China[52175300] ; Heilongjiang Touyan Innovation Team Program[HITTY-20190013] ; Shenzhen Fundamental Research Program[JCYJ20200925160843002]

Materials Science

Materials Science, Multidisciplinary

WOS:000919240100001

WILEY

Web of Science

1.Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Key Lab Energy Convers & Storage Technol, Shenzhen 518055, Peoples R China
5.Harbin Inst Technol, Zhengzhou Res Inst, Zhengzhou 450041, Peoples R China

Zhang, He,Feng, Jiayun,Sun, Fangyuan,et al. Self-Driven Ni-Based Electrochromic Devices for Energy-Efficient Smart Windows[J]. Advanced Materials Technologies,2023.

Zhang, He.,Feng, Jiayun.,Sun, Fangyuan.,Zhou, Dongyan.,Cao, Ge.,...&Tian, Yanhong.(2023).Self-Driven Ni-Based Electrochromic Devices for Energy-Efficient Smart Windows.Advanced Materials Technologies.

Zhang, He,et al."Self-Driven Ni-Based Electrochromic Devices for Energy-Efficient Smart Windows".Advanced Materials Technologies (2023).