期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 245, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.solmat.2022.111849
关键词
Electrodeposition; Tungsten trioxide (WO3); Density of states; Electrochemical Impedance Spectroscopy (EIS); Electrochromic energy storage
资金
- Shivaji University, Kolhapur, Maharashtra, 416004, India
This study investigates the physicochemical, electrochemical, and electrochromic properties of WO3 thin films in electrochromic supercapacitors. The results show that WO3 thin films exhibit excellent charge storage kinetics and capacitance performance.
Electrochromic devices are mainly investigated for energy harvesting and saving applications. Electrochromic supercapacitors (ECSC) attract smart electronics device applications by integrating electrochromic materials into energy storage devices. WO3 has been predominantly investigated materials for this application. Amorphous, transparent WO3 thin films owing to diffusive charge storage kinetics with improved active sites promote the better intercalation of Li+ ions in the porous surface area, which yields electrochromic supercapacitive performance. In the present study, WO3 thin films were prepared by electrodeposition and studied for their physicochemical, electrochemical, and electrochromic properties. Electronic properties of WO3 thin films were measured by using electrochemical impedance spectroscopy (EIS) in terms of density of states [D(E-f)] at the Fermi level. Charge storage kinetics of WO3 thin films studied by EIS corroborated with the voltammetry studies. The WO3 electrode exhibits wide optical modulation (similar to 90%) with the highest coloration efficiency (eta) of 132.89 cm(2)/C, including higher areal capacitance of 39.81 mF/cm(2) and volumetric capacitance of 180.91 mF/cm(3) at 20 mV/s scan rate with the capacitance retention up to 83% after 1000 CV cycles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据