Synergistic Effect and Electrochromic Mechanism of Nanoflake Li-doped NiO in LiOH Electrolyte

作     者：Kejun Xu Liuying Wang Gu Liu Chaoqun Ge Long Wang Weichao Wang Mengzhou Chen Kejun Xu;Liuying Wang;Gu Liu;Chaoqun Ge;Long Wang;Weichao Wang;Mengzhou Chen

作者机构：Xi’an Research Institute of High TechnologyXi’an 710025China 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2023年第6卷第3期

页      面：66-73页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Key Science and Technology Innovation Team of Shaanxi Province(No.2014KCT-03) Special Support Program for High-level Talents of Shaanxi Province(No.2020-44) China Postdoctoral Science Foundation(No.2019M663990) 

主　　题：electrochromic materials Li-doped NiO films LiOH electrolyte nanoflake 

摘      要：Inorganic metal oxide electrochromic materials have good application prospects for energy-saving windows in buildings and smart display ***,the development of electrochromic films with good cycling stabilities,fast color-change response times,and high coloring efficiencies has attracted considerable *** this study,nanoflake Li-doped NiO electrochromic films were prepared using a hydrothermal method,and the films exhibited superior electrochromic performances in the LiOH ***^(+)ions doping increased the ion transmission rates of the NiO films,and effectively promoted the transportation of ions from the electrolyte into NiO ***,the nanoflake microstructure caused the NiO films to have larger specific surface areas,providing more active sites for electrochemical *** was determined that the NiO-Li20%film exhibited an ultra-fast response in the LiOH electrolyte(coloring and bleaching times reached 3 and 1.5 s,respectively).Additionally,the coloration efficiency was 62.1 cm^(2)C^(−1),and good cycling stability was maintained beyond 1500 ***,the simulation calculation results showed that Li doping weakened the adsorption strengths of the NiO films to OH^(−),which reduced the generation and decomposition of NiOOH and helped to improve the cycling stabilities of the ***,the research presented in this article provides a strategy for designing electrochromic materials in the future.