TX-100 assisted electrodeposition of nickel oxide electrochromic thin films
Porous NiO nanofilms with different surface morphologies have great potential for application in the field of electrochromism.This article reports the preparation of porous NiO thin films by adding non ionic sur-factant TX-100 to NiSO4·6H2O aqueous solution.The morphology and composition of NiO thin films without surfactants and with TX-100 were characterized using scanning electron microscopy(SEM)and energy disper-sive X-ray spectroscopy(EDS).Electrochemical workstation and UV visible spectrophotometer were used to test the electrochromic performance.The results indicate that the addition of TX-100 can reduce the pore size and make the surface of porous NiO films denser,providing a larger specific surface area and more active sites,improving optical properties,and to some extent enhancing the cyclic stability of NiO films.At the wavelength of 600 nm,the maximum light modulation amplitude of the NiO film with TX-100 added is 68.88％,which is 8.58％higher than that of the NiO film without surfactant added.
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