Preparation method and applications of core-shell zinc oxide@zinc oxide@molybdenum trioxide nano array composite film

A nano-array and composite film technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, coatings, etc., can solve problems such as low conductivity, increased surface energy, side reaction structure, etc., and achieve the preparation process Simple and safe, good conductivity, uniform color effect

Active Publication Date: 2020-04-21
HARBIN UNIV OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention is to solve existing MoO 3 , ZnO has low conductivity as an electrode material, and nanomaterials will increase the surface energy, resulting in disordered accumulation and agglomeration of nanomaterials, and at the same time, it is easy to cause side reactions with the electrolyte to cause structural degradation and poor electrochemical stability. To solve the problem, a preparation method and application of core-shell zinc oxide@zinc oxide@molybdenum trioxide nano-array composite film are provided.

Method used

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  • Preparation method and applications of core-shell zinc oxide@zinc oxide@molybdenum trioxide nano array composite film
  • Preparation method and applications of core-shell zinc oxide@zinc oxide@molybdenum trioxide nano array composite film
  • Preparation method and applications of core-shell zinc oxide@zinc oxide@molybdenum trioxide nano array composite film

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specific Embodiment approach 1

[0016] Specific embodiment 1: In this embodiment, a method for preparing a core-shell type zinc oxide@zinc oxide@molybdenum trioxide nano-array composite film is carried out according to the following steps:

[0017] 1. Cleaning of the transparent conductive substrate: put the transparent conductive substrate in deionized water and ultrasonically clean it for 0.5-20 hours, then transfer it to acetone to continue ultrasonic cleaning for 1-30 hours, then transfer it to dilute hydrochloric acid solution for cleaning for 0.5-25 hours, and finally transfer it to Wash and soak in hydrogen peroxide for 1-50 hours to obtain a clean transparent conductive substrate;

[0018] 2. Preparation of ZnO nanoarrays: Dissolve zinc nitrate solid powder in ultrapure water for ultrasonic dispersion, then drop sodium hydroxide into it to continue ultrasonic dispersion and dissolution to obtain a ZnO nanoarray precursor mixed solution; put the precursor mixed solution After reacting for 1-10 hours i...

specific Embodiment approach 2

[0023] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the transparent conductive substrate in step 1 is FTO or ITO. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the molar volume ratio of zinc nitrate solid powder to ultrapure water in step 2 is 0.001 mol / L. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method and applications of a core-shell type zinc oxide@zinc oxide@molybdenum trioxide nano array composite film, and relates to a preparation method and applications of a core-shell type zinc oxide@zinc oxide@molybdenum trioxide nano array composite film. In the prior art, the existing MoO3 and ZnO serving as electrode materials are low in conductivity, the surface energy can be increased due to material nanocrystallization, nano materials are extremely easy to disorderly accumulate and agglomerate, and the nano materials are also easy to generate side reaction with electrolyte to cause structural degradation, so that the electrochemical stability becomes poor. A purpose of the invention is to solve the problems in the prior art. According to the invention, a ZnO@ZnO core-shell structure nano array and nanosheet / transparent conductive base low composite film is prepared by using zinc nitrate, sodium hydroxide, ammonia water and a molybdenum targetmaterial as raw materials, and then a ZnO@ZnO@MoO3 core-shell nanowire and nanosheet array / transparent conductive base low composite film is obtained by using a molybdenum target material as a raw material.

Description

technical field [0001] The invention relates to a preparation method and application of a core-shell type zinc oxide@zinc oxide@molybdenum trioxide nano-array composite film. Background technique [0002] As an energy storage device, supercapacitors have attracted much attention due to their advantages such as fast charge and discharge rates, long cycle life, high power density, and environmental friendliness. By introducing electrochromic materials into supercapacitors, a smart supercapacitor that can reflect its own energy storage state in real time and intuitively is prepared, which can facilitate users to judge its working status and predict its working ability, and it can save energy before its power is exhausted. Immediately take countermeasures to achieve safe and efficient operation of devices, and has broad application prospects in terms of intelligence. This integrated smart device can also be used in electrochromic smart windows, electronic books, sensing, commun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34H01G11/46H01G11/86
CPCC03C17/3417C03C2217/219C03C2217/231C03C2217/241C03C2218/111C03C2218/156C03C2218/31H01G11/46H01G11/86Y02E60/13
Inventor 王晶
Owner HARBIN UNIV OF COMMERCE
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