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Preparation method of supercapacitor electrode material

A technology of supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problem of low specific capacitance of activated carbon materials, achieve rich pores, increase specific surface area and pore volume, and improve Effect of Ion Diffusion Efficiency

Inactive Publication Date: 2021-04-16
成都善镁渠环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem to be solved by the present invention: Aiming at the problem that the specific capacitance of the activated carbon material is not high, a preparation method of an electrode material for a supercapacitor is provided

Method used

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Examples

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Effect test

preparation example Construction

[0026] A kind of preparation method of supercapacitor electrode material, this preparation method comprises the steps:

[0027] (1) Mix bamboo chips, surfactant and water evenly at a mass ratio of 6:0.3 to 0.6:15, cook at 100°C for 2 hours, filter, mix filter residue and ethanol at a mass ratio of 1:1, and perform steam explosion , collect explosives, and heat the explosives at 300-350°C for 1 hour to obtain pre-modified bamboo chips;

[0028] (2) Mix the pre-modified bamboo chips and concentrated sulfuric acid according to the solid-to-liquid g / mL ratio of 3:7, under nitrogen protection, stir at 500r / min for 3h, discharge, filter, collect the filter cake, and wash the filter cake to medium properties, dried at 90°C, collected the dried product, and obtained modified bamboo chips;

[0029] (3) In terms of parts by weight, take 120-130 parts of water, 60-70 parts of modified bamboo chips, 20-25 parts of compound materials, and 10-15 parts of additives. First, put water, modifi...

Embodiment 1

[0032] The surfactant is any one of cationic polyacrylamide and fatty alcohol polyoxyethylene ether.

[0033] The additive is mixed with urea and oleic acid amide at a mass ratio of 9:1.

[0034] The composite material is made by mixing nickel nitrate, lanthanum nitrate and manganese nitrate in a mass ratio of 7:3:4.

[0035] The initiator is any one of ammonium persulfate and sodium persulfate.

[0036] The auxiliary agent is any one of sodium dodecylbenzenesulfonate and sodium lauryl sulfate.

[0037] A kind of preparation method of supercapacitor electrode material, this preparation method comprises the steps:

[0038] (1) Mix bamboo chips, surfactant and water evenly at a mass ratio of 6:0.6:15, cook at 100°C for 2 hours, filter, mix filter residue and ethanol at a mass ratio of 1:1, perform steam explosion, and collect For explosives, heat the explosives at 350°C for 1 hour to obtain pre-modified bamboo chips;

[0039] (2) Mix the pre-modified bamboo chips and concent...

Embodiment 2

[0043] The surfactant is any one of cationic polyacrylamide and fatty alcohol polyoxyethylene ether.

[0044] The additive is mixed with urea and oleic acid amide at a mass ratio of 9:1.

[0045] The composite material is made by mixing nickel nitrate, lanthanum nitrate and manganese nitrate in a mass ratio of 7:3:3.

[0046] The initiator is any one of ammonium persulfate and sodium persulfate.

[0047] The auxiliary agent is any one of sodium dodecylbenzenesulfonate and sodium lauryl sulfate.

[0048] A kind of preparation method of supercapacitor electrode material, this preparation method comprises the steps:

[0049](1) Mix bamboo chips, surfactant and water evenly at a mass ratio of 6:0.5:15, cook at 100°C for 2 hours, filter, mix filter residue and ethanol at a mass ratio of 1:1, perform steam explosion, and collect For explosives, heat the explosives at 320°C for 1 hour to obtain pre-modified bamboo chips;

[0050] (2) Mix the pre-modified bamboo chips and concentr...

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Abstract

The invention belongs to the technical field of electrode materials, and particularly relates to a preparation method of a supercapacitor electrode material. According to the invention, bamboo sawdust is used as a basic raw material, a surfactant is used for activation, steam explosion is used for expanding internal gaps, meanwhile, pre-carbonization treatment is carried out at a low temperature, active sites on the surface can be effectively increased, then treatment is carried out with concentrated sulfuric acid, activation can be effectively carried out, meanwhile, the concave-convex property of the surface of the pretreated bamboo sawdust can be effectively improved, the contact surface is increased, the specific surface area and the pore volume are increased, then the bamboo sawdust is mixed with a composite material, a multi-metal element composite state is formed by depositing metal elements in the composite material on the surface, a certain promoting effect is achieved, the ion diffusion efficiency of the electrolyte can be effectively improved, the specific capacitance is improved, then the bamboo sawdust is mixed with an aniline monomer, polymerization is conducted by utilizing the initiation of an initiator, and the initiator and the modified bamboo sawdust are compounded to form the supercapacitor electrode material.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, and in particular relates to a preparation method of an electrode material for a supercapacitor. Background technique [0002] Electrochemical capacitors, so-called supercapacitors (Supercapacitor), are a new type of energy storage device, which has the advantages of short charging time, high power density, good temperature characteristics and environmental friendliness. At the same time, supercapacitors do not undergo chemical reactions during energy storage and are electrochemically reversible, making them a new type of electrochemical element. [0003] Generally, supercapacitors can be divided into two categories according to the different energy storage mechanisms: electric double layer capacitors (EDLC) and pseudocapacitors (Pesudocapaeitor). Based on the different types of electrolytes used, supercapacitors can be divided into three categories: aqueous electrolyte capacitors, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/44H01G11/34H01G11/26H01G11/24
CPCY02E60/13
Inventor 吕贻秀
Owner 成都善镁渠环保科技有限公司
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