无机材料学报2023，Vol.38Issue(12)：1427-1433,7.DOI:10.15541/jim20230142
多孔NiMoO4纳米片薄膜的直接水热生长及其电致变色性能
Directly Hydrothermal Growth and Electrochromic Properties of Porous NiMoO4 Nanosheet Films
摘要
Abstract
Nickel molybdate(NiMoO4)is a material with excellent performance in the field of energy storage and catalysis,but lacking of further explorations in the field of electrochromism.In this work,porous NiMoO4 films were grown on transparent conductive glasses by hydrothermal method without using seed layer.Crystalline phase and micromorphology of NiMoO4 nanosheet films were characterized by grazing incidence X-ray diffractometer(GIXRD)and field-emission scanning electron microscope(FESEM),and the electrochromic and electrochemical properties were also investigated by using a UV-Vis-NIR spectrophotometer and an electrochemical workstation.The results show that the NiMoO4 electrochromic films have a porous structure,which can provide sufficient channels for ion migration and reactive sites for the dynamic process of ion intercalation/deintercalation into NiMoO4 film.Therefore,the NiMoO4 films exhibit excellent electrochromic performance,including large optical modulation of 79.6%at 480 nm and high coloring efficiency of 86.2 cm2·C-1.Meanwhile,the coloration and bleaching response time of the NiMoO4 films are 9.5 and 12.7 s,respectively.Interestingly,there is a two-step process in the bleached process of NiMoO4 electrochromic films,including a fast process and a slow process.And the optical modulation can still be maintained at 99.7%of the maximum optical modulation after 100 cycles.In addition,the NiMoO4 films exhibit a large area specific capacitance of 49.59 mF·cm-2 at 0.3 mA·cm-2.These excellent properties support NiMoO4 nanosheet films with promising application in high-performance electrochromic devices.And the next step is to focus on finding the suitable electrolyte and matched counter electrodes in the device assembly.关键词
NiMoO4/电致变色/纳米片/水热法Key words
NiMoO4/electrochromic/nanosheet/hydrothermal method分类
化学化工引用本文复制引用
牛海滨,黄佳慧,李倩文,马董云,王金敏..多孔NiMoO4纳米片薄膜的直接水热生长及其电致变色性能[J].无机材料学报,2023,38(12):1427-1433,7.基金项目
国家自然科学基金(62275154)National Natural Science Foundation of China(62275154) （62275154）
