Journal
ELECTROCHIMICA ACTA
Volume 316, Issue -, Pages 143-151Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.05.112
Keywords
Electrochromism; Nickel oxide; Lithium doping; Lattice structure; Electronic structure variation
Categories
Funding
- National Natural Science Foundation of China [11674042]
- Science Challenge Project [TZ2018004]
- Fundamental Research Funds for the Central Universities [KG12099501]
Ask authors/readers for more resources
Application of electrochromic anode material has recently attracted tremendous attention for fields of electronics, photonics and energy storage. While limited understanding of mechanisms of performance optimization and electrochromic process is still the hindrance for the development of such materials. Here, we demonstrate a novel lithium doped nickel oxide ultra-thin film with critical structure that can be synthesized via an one-step sputtering process, as a superior anode material for electrochromic device with extraordinary capability of deep coloring (tripled than nickel oxide film), large transmittance contrast (close to 70%) and high charge capacitance (13 mF cm(-2)). We observed extremely significant pronounced lattice expanding/reducing and in the electrochromic process of doped thin film. Variations of electronic structure were detected and we using the theoretical calculations reveal the presence of electronic defect states induced by lithium doping, which effectively reduces the band gap of nickel oxide and contributes bleaching and coloring. These findings shed new light on future development of electrochromic materials and devices for practical implementation. (C) 2019 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available