A preparation method of a carbon-based metal double hydroxide supercapacitor electrode material

Abstract

The invention discloses a preparation method of a supercapacitor electrode material with good electrochemical performance, which takes a carbon cloth as a flexible substrate and grows a transition metal double hydroxide on the substrate. The invention particularly relates to a novel method for preparing a carbon-based nickel-cobalt double hydroxide supercapacitor electrode material by carbonizingcotton cloth at high temperature and growing nickel-cobalt double hydroxide on the carbonized cotton cloth by a one-step hydrothermal method, wherein the carbon-based nickel-cobalt double hydroxide supercapacitor electrode material is prepared by a hydrothermal method. The invention comprises the following specific steps: At first, that cotton cloth is carbonize at high temperature to obtain carbon cloth, weighing a proportion of nickel chloride hexahydrate and cobalt chloride hexahydrate, and mixed with hexamethylenetetramine, Dissolved in appropriate amount of deionized water, carbon cloth or active treated carbon cloth is completely immersed in the mixed solution, stirred for a certain time, then Ni-Co double hydroxide is grown on the carbon cloth under hydrothermal conditions, and thecarbon cloth after reaction is washed and dried to obtain Ni-Co double hydroxide supercapacitor electrode material with carbon cloth as a flexible substrate.

Description

technical field [0001] The invention relates to a preparation method of a carbon-based metal double hydroxide supercapacitor electrode material, in particular to a method of first carbonizing cotton cloth, and then using hydrothermal conditions to grow the synthesized nickel-cobalt double hydroxide on the carbonized On cotton cloth, a new method for preparing metal double hydroxide supercapacitor electrode materials with carbon cloth as a flexible substrate. Background technique [0002] The rapid growth of the global population and the rapid development of the economy have increased people's demand for energy, resulting in the continuous reduction of fossil energy and global warming. Therefore, people urgently need to develop and produce clean, low-cost, and efficient energy to meet future low-carbon To meet the needs of sustainable economic development, finding green renewable energy and efficient energy storage systems is an important way to solve the problems of environm...

AI Technical Summary

Problems solved by technology

[0003] Most of the electrode materials currently reported are in the form of powders. In the process of making electrodes, people usually mix the powder samples with conductive agents and binders and evenly coat them on the conductive substrate. However, these conductive agents and binders It will cause a "dead surface", increase the resistance between the current collector and the electroactive material in the electrochemical test, hinder the transmission of electrons and the diffusion of electrolyte ions, resulting in a decrease in the electrochemical performance of the active material