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

Graphene nano-material compound for lithium ion battery electrode and preparation method thereof

A lithium electronic battery and nanomaterial technology, which is applied in the field of graphene nanomaterial composites for lithium electronic battery electrodes and its preparation, can solve problems such as the rate performance decline of electrode materials, improve electrochemical performance, prevent shedding and agglomeration, The effect of good electrochemical performance

Active Publication Date: 2020-05-29
SUZHOU YUDESHUI ELECTRIC TECH CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the negative electrode material prepared by the traditional process of loading tin dioxide on the surface of graphene has a significant decrease in the rate performance of the electrode material after repeated charge and discharge. Therefore, it is necessary to study a reusable graphene nanomaterial composite for lithium electronic battery electrodes.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A graphene nanomaterial composite for electrodes of lithium electronic batteries, mainly comprising: 15 parts of modified graphene oxide, 28 parts of carboxymethyl chitosan, 8 parts of tin dioxide and 7 parts of glucose oxide in parts by weight polysaccharides.

[0033] A preparation method of a graphene nanomaterial composite for lithium electronic battery electrodes, the preparation method of the graphene nanomaterial composite for lithium electronic battery electrodes mainly includes the following preparation steps:

[0034] (1) Mix carboxymethyl chitosan and dextran in a beaker at a mass ratio of 5:1, and add water 20 times the mass of carboxymethyl chitosan to the beaker at a temperature of 30°C and a speed of After stirring and mixing under the condition of 380r / min for 30min, the mixed solution was obtained. The mixed solution was dropped into the hydrochloric acid solution with a mass fraction of 8% at a rate of 8mL / min, and stirred and dispersed under the condi...

Embodiment 2

[0042] A graphene nanomaterial composite for electrodes of lithium electronic batteries, mainly comprising: 15 parts of graphene oxide, 28 parts of carboxymethyl chitosan, 8 parts of tin dioxide and 7 parts of oxidized dextran in parts by weight .

[0043] A preparation method of a graphene nanomaterial composite for lithium electronic battery electrodes, the preparation method of the graphene nanomaterial composite for lithium electronic battery electrodes mainly includes the following preparation steps:

[0044] (1) Mix carboxymethyl chitosan and dextran in a beaker at a mass ratio of 5:1, and add water 20 times the mass of carboxymethyl chitosan to the beaker at a temperature of 30°C and a speed of After stirring and mixing under the condition of 380r / min for 30min, the mixed solution was obtained. The mixed solution was dropped into the hydrochloric acid solution with a mass fraction of 8% at a rate of 8mL / min, and stirred and dispersed under the condition of 280r / min for ...

Embodiment 3

[0051] A graphene nanomaterial composite for lithium electronic battery electrodes, mainly comprising: 15 parts of modified graphene oxide, 28 parts of carboxymethyl chitosan, 8 parts of tin dioxide and 7 parts of dextran sugar.

[0052] A preparation method of a graphene nanomaterial composite for lithium electronic battery electrodes, the preparation method of the graphene nanomaterial composite for lithium electronic battery electrodes mainly includes the following preparation steps:

[0053] (1) Mix carboxymethyl chitosan and dextran in a beaker at a mass ratio of 5:1, and add water 20 times the mass of carboxymethyl chitosan to the beaker at a temperature of 30°C and a speed of After stirring and mixing under the condition of 380r / min for 30min, the mixed solution was obtained. The mixed solution was dropped into the hydrochloric acid solution with a mass fraction of 8% at a rate of 8mL / min, and stirred and dispersed under the condition of 280r / min for 60min. To obtain a...

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 discloses a graphene nano-material compound for a lithium ion battery electrode and a preparation method of the graphene nano-material compound, and relates to the technical field of lithium battery materials. The preparation method comprises the following steps: firstly, enabling graphene oxide and ethylenediamine to react together to prepare modified graphene oxide; then, mixing and crosslinking glucan and carboxymethyl chitosan to prepare microspheres; oxidizing the microspheres with potassium periodate, mixing the microspheres with a modified graphene oxide dispersion liquidto obtain modified microspheres; and at last, mixing the modified microspheres with a tin source aqueous solution, and carbonizing in a carbonization furnace to obtain the graphene nano-material compound for the lithium ion battery electrode. The graphene nano-material compound for the lithium ion battery electrode prepared by the invention has excellent electrochemical performance, and still hasrelatively good coulombic efficiency after being repeatedly used for multiple times.

Description

technical field [0001] The invention relates to the technical field of lithium battery materials, in particular to a graphene nanomaterial composite for lithium electronic battery electrodes and a preparation method thereof. Background technique [0002] The increasingly prominent problems of environmental pollution and energy crisis make the development of sustainable new energy and the construction of a low-carbon society a top priority. As a green, new type, high-energy battery, lithium-ion batteries have attracted much attention and are widely used in portable electronic products, electric vehicles and energy storage devices. The performance of the anode material of a lithium-ion battery has a great influence on the performance of the entire battery, and the improvement of the capacity and stability of the anode material is crucial to the improvement of the performance of the entire battery. [0003] As a negative electrode material that can provide high theoretical spe...

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): C01B32/184C01G19/02H01M4/48H01M4/62H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B2204/22C01G19/02C01P2004/80C01P2006/40C01B32/184H01M4/483H01M4/625H01M10/0525Y02E60/10
Inventor 王跃
Owner SUZHOU YUDESHUI ELECTRIC TECH CO LTD