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In-situ-growth-based method for preparing nickel hydroxide-nickel oxide film electrode

A technology of nickel hydroxide and thin-film electrodes, which is applied in the manufacture of circuits, electrical components, cables/conductors, etc., can solve the problems of complex electrode preparation processes, achieve low production costs, controllable thickness, and overcome complex processes.

Inactive Publication Date: 2016-04-06
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the commonly reported nickel hydroxide and nickel oxide powder materials, when they are applied in the electrochemical field, it is often necessary to introduce conductive agents (graphite, acetylene black, etc.) and binders (polytetrafluoroethylene, etc.) to exert their activity. This complicates the electrode preparation process

Method used

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  • In-situ-growth-based method for preparing nickel hydroxide-nickel oxide film electrode
  • In-situ-growth-based method for preparing nickel hydroxide-nickel oxide film electrode
  • In-situ-growth-based method for preparing nickel hydroxide-nickel oxide film electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0019] First, clean the industrial foam nickel substrate to remove dust, rust, and oil to obtain a clean nickel surface; then, prepare a KOH solution with a concentration of 50g / L and add hydrogen peroxide to it to make the hydrogen peroxide concentration 1g / L L; Secondly, put the electrolyte into the reaction kettle while immersing the clean nickel matrix into the electrolyte; after that, place the reaction kettle in the muffle furnace for hydrothermal reaction at 180°C for 24 hours to make the metal nickel surface An oxidation reaction occurs; finally, the hydrothermally heated metallic nickel is taken out, cleaned and dried to obtain a nickel hydroxide-nickel oxide film electrode based on in-situ growth. Such as figure 1 To show, the method for preparing a nickel hydroxide-nickel oxide film electrode based on in-situ growth of the present invention can obtain a uniform product film in-situ on the substrate (see the photo after preparation). Such as figure 2 As shown, it can...

Embodiment 2

[0021] Firstly, the flat nickel substrate is cleaned, dust-removed, rust-removed, and oil-removed to obtain a clean nickel surface; then, a NaOH solution with a concentration of 300g / L is prepared, and ammonia water is added to it to make the ammonia water concentration 5g / L; Put the electrolyte into the reaction kettle while immersing the clean nickel matrix into the electrolyte; after that, place the reaction kettle in a muffle furnace for a hydrothermal reaction at 250°C for 1 hour to cause oxidation reaction on the surface of the metal nickel; , Take out the hydrothermally heated electrode, clean it and dry it, and then obtain a nickel hydroxide-nickel oxide film electrode based on in-situ growth.

Embodiment 3

[0023] First, clean the stainless steel nickel-plated substrate to remove dust, rust, and oil to obtain a clean nickel surface; then, prepare a KOH solution with a concentration of 100g / L, and add sodium carbonate to it to make the sodium carbonate concentration 10g / L; Secondly, put the electrolyte into the reaction kettle, while immersing the clean nickel matrix into the electrolyte; after that, put the reaction kettle in the muffle furnace for hydrothermal reaction at 120°C for 96 hours, so that the metal nickel surface Oxidation reaction; Finally, the hydrothermally heated electrode is taken out, cleaned and dried to obtain a nickel hydroxide-nickel oxide film electrode based on in-situ growth.

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Abstract

The invention relates to an in-situ-growth-based method for preparing nickel hydroxide-nickel oxide film electrode. The method comprises: cleaning, dedusting, rust removing, and oil removing are carried out on a metallic nickel substrate to obtain a clean nickel surface; preparation of an alkaline electrolyte is carried out, wherein the main raw material is KOH or NaOH alkali metal and the concentration is 5-300g / L and the auxiliary raw material is one of hydrogen peroxide, ammoniacal liquor, sodium carbonate, sodium oxalate, urea, and glycol and the concentration is 1-20g / L; the electrolyte is placed in an reaction still and the clean nickel substrate is immersed into the electrolyte; the reaction still is placed in a muffle furnace to carry out hydrothermal reaction for 1 to 96 houses at the temperature of 120 to 250 DEG C, so that oxidation reaction is carried out on the metallic nickel surface; and then the metallic nickel is taken out after water heating and is cleaned and dried, thereby obtaining the nickel hydroxide-nickel oxide film electrode prepared based on in-situ growth. The preparation method has advantages of simple process, low price of raw materials, easy operation, and low production price; the thickness of the prepared film material can be controlled; and the activity is high. The method is suitable for industrial large-scale production.

Description

Technical field [0001] The invention relates to a method for preparing electrode materials. Background technique [0002] As functional materials with high electrochemical activity, nickel hydroxide and nickel oxide nanomaterials are used in electrochemical energy storage (such as lithium ion batteries, supercapacitors), electrochemical catalysis (such as electrochemical oxygen evolution), electrochemical sensors, etc. Important application value. In recent years, the development and performance research of nickel hydroxide and nickel oxide materials have attracted the attention of scientists at home and abroad, and the development of low-cost, easy-to-operate, high-activity, and industrialized material preparation methods has become a key issue and has great significance . [0003] In the field of electrochemical applications, in order to better exert the activity of the product, the prepared nickel hydroxide and nickel oxide need to maintain good electronic conductivity with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00
CPCH01B13/00
Inventor 樊玉欠侯爵梁丹阳王慧娟余文婷郭壮闫帅李甄马志鹏刘宇邵光杰
Owner YANSHAN UNIV
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