Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method for porous electrode

A porous electrode and pore-forming agent technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of high price and poor cycle life of pseudocapacitor supercapacitors, and achieve low cost and good product consistency , the effect of high power output capability

Active Publication Date: 2016-03-02
CHAOWEI POWER CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a porous capacitor with high porosity, suitable pore size, high conductivity, high electrochemical activity and stability in order to solve the defects of poor cycle life and high price in existing various types of pseudocapacitor supercapacitors. Electrode preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method for porous electrode
  • Preparation method for porous electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of porous electrode, described preparation method comprises the following steps:

[0038] 1) Mix 10kg of carbon nanotubes, 5kg of PEG-400, 100kg of isopropanol, 0.85kg of 60% PTFE emulsion and 0.5kg of additives, and stir for 24 hours with a double planetary mixer to form a bean curd residue-like precursor; carbon nanotubes are modified After use, the method of surface modification treatment is: mix 15% mass concentration of silane coupling agent absolute ethanol solution with carbon nanotubes for 65 minutes, and then add mass concentration of 55% dimethylformamide solution and acid The solution was mixed for 60 minutes according to the solid-liquid ratio of 1g: 30mL: 20mL, filtered, and the filtrate was dried at 95°C for 1h, and then activated at 120°C for 1h. The amount of silane coupling agent was 0.5% of the weight of carbon nanotubes. It is concentrated nitric acid with a mass concentration of 70%; the additive is a mixture of tin dioxi...

Embodiment 2

[0043] A kind of preparation method of porous electrode, described preparation method comprises the following steps:

[0044] 1) Mix 10kg of acetylene black, 3kg of PEG-800, 25kg of n-butanol, 0.45kg of 60% polyvinylidene fluoride emulsion and 0.05kg of additives, and stir for 24 hours with a double planetary mixer to form a bean curd residue-like precursor; acetylene black is modified After treatment, the method of surface modification treatment is: mix 18% mass concentration of silane coupling agent absolute ethanol solution with acetylene black for 68 minutes, and then add 58% mass concentration of dimethylformamide solution and acid The solution was mixed for 65 minutes according to the solid-liquid ratio of 1g: 35mL: 23mL, filtered, and the filtrate was dried at 100°C for 1.5h, and then activated at 125°C for 1.5h. The amount of silane coupling agent was 1.5% of the weight of acetylene black. The solution is concentrated nitric acid with a mass concentration of 70%; the a...

Embodiment 3

[0049] A kind of preparation method of porous electrode, described preparation method comprises the following steps:

[0050] 1) Mix 5kg of carbon nanotubes, 5kg of acetylene black, 50kg of acetone, 4kg of PEG-600, 0.5kg of 60% polyacrylic acid emulsion and 1kg of additives, and stir for 24 hours with a double planetary mixer to form a bean curd residue-like precursor; carbon nanotubes and acetylene The black is used after modification treatment. The method of surface modification treatment is: mix 20% mass concentration of silane coupling agent absolute ethanol solution with carbon nanotubes and acetylene black for 70 minutes, and then add mass concentration of 60% Dimethylformamide solution and acid solution were mixed for 70 minutes according to the solid-liquid ratio of 1g: 45mL: 25mL, filtered, and the filtrate was dried at 120°C for 2h, and then activated at 135°C for 2h. The amount of silane coupling agent was nano-carbon 0.7% of the weight of the tube and acetylene bla...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for a porous electrode and relates to a manufacturing technology for the porous electrode having high porosity, appropriate aperture, high conductivity, high electrochemical activity and high stability. The porous electrode is formed by a carbon material in a three-dimensional network framework; the aperture ranges from 2 microns to 50 microns; the thickness of the porous electrode is adjustable within a range of 0.5-5 mm; the porosity of the porous electrode is adjustable within a range of 70-95%. The battery electrolyte can be fully kept in pores without flowing; the electrochemical active substances can be rapidly mass-transferred to the surface of the electrode in charging / discharging processes for producing an electrochemical reaction; and the electrochemical active substances can be fully used within a second-level time to generate pseudocapacitance. Thus, a quite high power output capability is achieved. Moreover, the solid phase of the electrode does not change chemically or physically before and after the charging / discharging processes.

Description

technical field [0001] The invention relates to a preparation method of a porous electrode with high porosity, suitable pore size, high conductivity, high electrochemical activity and stability. Background technique [0002] With global warming and lack of resources, countries and regions all over the world are developing new green and environmentally friendly energy sources, and the materials used in the production of supercapacitors are generally green and environmentally friendly. Due to its broad application prospects and huge potential market, supercapacitors have become a research hotspot in the international energy field. Due to the advantages of fast charging and discharging, no pollution to the environment, and long cycle life, supercapacitors are expected to become a new type of green energy in this century. Because of the many significant advantages of supercapacitors, they have huge application value and market potential in automobiles (especially electric vehic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01G11/86H01G11/24H01G11/38
CPCY02E60/13H01G11/86H01G11/24H01G11/38
Inventor 杨贞胜柯克汪彦龙
Owner CHAOWEI POWER CO LTD