Preparation method of supercapacitor electrode material comprising porous nickel hydroxide

Abstract

The invention provides a preparation method of a supercapacitor electrode material comprising porous nickel hydroxide. The method is characterized by, to begin with, removing oil stain on the surface of nickel foam with acetone, and soaking the obtained nickel foam in 6M HCl; 2) dissolving zinc nitrate, hexamethylene tetramine and Ni(NO3)2 in the distilled water, adding ammonia water to generate flocculent precipitates, adding the ammonia water continuously until the flocculent precipitates are fully dissolved, transferring the solution to a reaction kettle, and adding the processed nickel foam, and after reaction for 24 hours, a nickel foam-carried ZnO/Ni(OH)2 compound nanosheet array is prepared; and soaking the nickel foam-carried ZnO/Ni(OH)2 compound nanosheet array in potassium hydroxide, taking the nickel foam-carried ZnO/Ni(OH)2 compound nanosheet array out, and then carrying out cleaning and drying to obtain the supercapacitor electrode material comprising the porous nickel hydroxide. The method overcomes the defects of poor conductivity of Ni(OH)2 and slow diffusion of electrolyte, and solves the problem that the supercapacitor electrode material is prone to have concentration polarization during heavy-load discharge.

Description

technical field [0001] The present invention relates to a preparation method of an electrode material for a supercapacitor, specifically a method containing Ni(OH) foamed nickel 2 A method for preparing a supercapacitor electrode material of a porous nanosheet array electrode material. Background technique [0002] A supercapacitor is an energy storage element that uses the electrochemical process on the surface of an electrode / solution to store charges, also called an electrochemical capacitor. It has the advantages of fast charging and discharging, long life, wide working temperature limit, good voltage memory, and maintenance-free. It is a new, efficient and practical energy storage device. [0003] Electrode material is one of the key factors determining the performance of supercapacitors, so the research on electrode materials has also become a hot spot in supercapacitor research. The research on electrode materials mainly focuses on active materials with high specifi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of can overcome Ni(OH) 2 Poor conductivity, slow diffusion of electrolyte and other shortcomings, the resulting supercapacito