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

Preparation method and application of electrode material

An electrode material, intercalation reaction technology, applied in the field of electrode material preparation, can solve the problems of small LDHs interlayer spacing, limiting the degree of electrode material reaction, poor capacity and rate performance, etc.

Active Publication Date: 2020-02-14
NANJING UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But usually, the interlayer spacing of LDHs is small, which is not conducive to OH in the electrochemical energy storage process. - Diffusion between layers limits the extent to which the electrode material participates in the reaction
Therefore, LDHs exhibit poor capacity and rate performance

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 and application of electrode material
  • Preparation method and application of electrode material
  • Preparation method and application of electrode material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The invention provides a kind of preparation method of electrode material, comprises the following steps:

[0034] mixing the intercalation solution and the layered double metal hydroxide to perform an intercalation reaction to obtain an electrode material;

[0035] The intercalation solution is a linear dicarboxylic acid disodium salt solution or a conjugated polycarboxylic acid sodium salt solution.

[0036] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0037] In the present invention, the intercalation solution and the layered double metal hydroxide are mixed for an intercalation reaction to obtain an electrode material; the intercalation solution is a linear dicarboxylic acid disodium salt solution or a conjugated polycarboxylic acid sodium salt solution.

[0038] In the present invention, the concentration of the linear dicarboxylic acid disodium salt...

Embodiment 1

[0061] Provides Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 Mixed solution of O (Ni(NO 3 ) 2 ·6H 2 O is 17.5mmol, Co(NO 3 ) 2 ·6H 2 O is 2.5mmol, ultrapure water is 80mL), aqueous solution of sodium oxalate and hexamethylenetetramine (sodium oxalate is 0.1g, hexamethylenetetramine is 20mmol, water is 20mL) and disodium succinate solution (disodium succinate is 10mmol, ultrapure water 100mL);

[0062] Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 The mixed solution of O is degassed and oxygenated, and heated to 40°C under stirring conditions, and the degassed sodium oxalate and hexamethylenetetramine aqueous solution are quickly added, and the precipitation reaction is carried out under stirring conditions (95°C, After 6h), cooling, filtering, fully washing with ultrapure water and absolute ethanol, and drying to obtain a layered double metal hydroxide;

[0063] The layered double metal hydroxide is carried out SEM test, test result is as follows figure 1 shown by ...

Embodiment 2

[0067] The preparation method refers to Example 1, the difference is that disodium adipate is used instead of disodium succinate in Example 1; the interlayer distance of the double metal hydroxide in the electrode material is 0.95nm.

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

No PUM Login to View More

Abstract

The invention relates to the technical field of electrode materials, in particular to a preparation method and an application of an electrode material. The interlayer spacing of double metal hydroxidenanosheets is increased through straight-chain dicarboxylic acid disodium salt or conjugated polycarboxylate sodium salt, so that OH<-> interlayer diffusion kinetics is improved, and the electrode material is obtained. According to the description of embodiments, the electrode material still has a high specific capacity of greater than or equal to 173F / g at a current density of 150A / g. The methodhas the advantages of controllable material components, easiness in large-scale production, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of electrode materials, in particular to a preparation method and application of electrode materials. Background technique [0002] Supercapacitors have the advantages of high power density and long cycle life, and are widely used in the fields of automobiles, electronic devices, and efficient utilization of renewable energy. However, the low energy density of supercapacitors greatly limits its application range and stimulates research enthusiasm for developing electrode materials for supercapacitors with high energy densities. In recent years, researchers have found that transition metal-based materials have high theoretical energy density, which can store and release charges through faradaic reactions. However, the slow kinetics of charge transport in the faradaic reaction of this type of material will lead to poor capacity and rate performance. Therefore, by improving the charge transport kinetics of el...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30B82Y40/00
CPCH01G11/24H01G11/30B82Y40/00Y02E60/13
Inventor 赵杰吴强杨立军王喜章胡征
Owner NANJING UNIV