Preparation method of nickel oxide nanotube

Abstract

The invention discloses a preparation method of a nickel oxide nanotube. The preparation method comprises the following steps: preparing a zinc oxide seed layer by virtue of a spin coating method, preparing highly-ordered zinc oxide nanorod templates vertical to an FTO conductive substrate, and controlling the lengths of zinc oxide nanorods by controlling the hydrothermal reaction time; and preparing a layer of flake-shaped nickel oxide coating the zinc oxide nanorods by virtue of a chemical bath method, removing a zinc oxide template through alkaline corrosion, and finally carrying out annealing, so as to obtain the nickel oxide nanotube vertical to the FTO conductive substrate. The preparation method is low in cost and simple and easy in operation, the reaction conditions are controllable, and the prepared nickel oxide nanotube structurally has a relatively large specific surface area, is beneficial to the rapid transmission of electrolyte ions in a nickel oxide nano-strucutre and iscapable of improving the electrochromic performance of nickel oxide materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of anode electrochromic materials, and relates to a preparation method of nickel oxide nanotubes which can be used as electrochromic materials. Background technique [0002] As a new type of energy-saving material, electrochromic materials have immeasurable potential in displays, smart windows, stealth materials, etc. Especially the continuous popularization of smart windows has a great effect on improving the comfort of life. Due to these characteristics of electrochromic materials, it has a huge effect on energy saving and environmental protection. Nickel oxide materials have attracted extensive attention due to their abundant resources and simple preparation methods. The traditional dense nickel oxide film has a small specific surface area and is not conducive to the diffusion of the electrolyte, resulting in long discoloration response time, low contrast, and low coloring efficiency; due ...

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Problems solved by technology

The traditional dense nickel oxide film has a small specific surface area and is not conducive to the diffusion of the electrolyte, resulting in long discoloration response time, low contrast, and low coloring efficiency; due to the excellent electrochemical properties of the nanostructure, it can be prepared. Structured, vertical Nanostructured nickel oxide color-changing layer on the substrate, thereby increasing the specific surface area of ​​nickel oxide, expanding ion channels, reducing the diffusion resistance of charges or ions between the electrolyte and electrode materials, thereby improving the modulation amplitude and coloring efficiency of nickel oxide to light , to shorten the response time

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