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A kind of preparation method and application of hard carbon nanomaterial for ion battery

A nanomaterial, ion battery technology, applied in battery electrodes, nanotechnology, secondary batteries, etc., can solve the problems of low initial efficiency, low capacity, and low fast intercalation/deionization ability, and achieve environmental protection and improve conductivity. , Improve the effect of sodium/lithium storage capacity

Active Publication Date: 2020-08-18
宁波禾木纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the hard carbon anode materials in the prior art still have disadvantages such as low capacity, low first-time efficiency, and low rapid intercalation / deionization ability.

Method used

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  • A kind of preparation method and application of hard carbon nanomaterial for ion battery

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method for preparing hard carbon nanomaterials for ion batteries includes the following steps:

[0054] Step 1. Prepare hard carbon pretreatment liquid:

[0055] (1) Wash the mango core, grind it to powder, and sieve to obtain mango core powder with a particle size of 150-300 μm;

[0056] (2) Add mango stone powder to deionized water, disperse uniformly, add concentrated sulfuric acid with a mass concentration of 98%, and stir uniformly to obtain a hard carbon pre-treatment product;

[0057] Among them, the solid-to-liquid ratio of mango stone powder to deionized water is 1:20-30; the mass ratio of concentrated sulfuric acid to mango stone powder is 1 to 2:10;

[0058] (3) Move the hard carbon pretreatment material into a reactor lined with polytetrafluoroethylene, set the temperature to 200-300°C, react for 24 to 48 hours and then cool to room temperature to obtain the hard carbon pretreatment liquid.

[0059] Step 2. Prepare nano zirconium silicide:

[0060] (1) Take the ultra-...

Embodiment 2

[0073] A method for preparing hard carbon nanomaterials for ion batteries includes the following steps:

[0074] Step 1. Prepare hard carbon pretreatment liquid:

[0075] (1) Wash the loquat cores, grind to powder, and sieve to obtain loquat core powder with a particle size of 150-300 μm;

[0076] (2) Add loquat core powder to deionized water, disperse uniformly, add concentrated sulfuric acid with a mass concentration of 98%, and stir evenly to obtain a hard carbon pretreatment;

[0077] Among them, the solid-to-liquid ratio of loquat core powder to deionized water is 1:20-30; the mass ratio of concentrated sulfuric acid to loquat core powder is 1 to 2:10;

[0078] (3) Move the hard carbon pretreatment material into a reactor lined with polytetrafluoroethylene, set the temperature to 200-300°C, react for 24 to 48 hours and then cool to room temperature to obtain the hard carbon pretreatment liquid.

[0079] Step 2. Prepare nano zirconium silicide:

[0080] (1) Take the ultra-fine zirconi...

Embodiment 3

[0093] A method for preparing hard carbon nanomaterials for ion batteries includes the following steps:

[0094] Step 1. Prepare hard carbon pretreatment liquid:

[0095] (1) Wash the avocado core, grind it to powder, and sieve to obtain avocado core powder with a particle size of 150-300 μm;

[0096] (2) Add the avocado stone powder to deionized water, disperse uniformly, add concentrated sulfuric acid with a mass concentration of 98%, and stir evenly to obtain a hard carbon pretreatment;

[0097] Among them, the solid-to-liquid ratio of avocado stone powder to deionized water is 1:20-30; the mass ratio of concentrated sulfuric acid to avocado stone powder is 1 to 2:10;

[0098] (3) Move the hard carbon pretreatment material into a reactor lined with polytetrafluoroethylene, set the temperature to 200-300°C, react for 24 to 48 hours and then cool to room temperature to obtain the hard carbon pretreatment liquid.

[0099] Step 2. Prepare nano zirconium silicide:

[0100] (1) Take the ultr...

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Abstract

The invention relates to the field of carbon nano materials, in particular to a preparation method and an application of a hard carbon nano material for an ion battery. The invention discloses a preparation method of a hard carbon nano material for an ion battery, which is characterized by comprising the following steps: step 1, preparing a hard carbon pretreatment solution; step 2, preparing nanozirconium silicide; step 3, preparing modified nano zirconium silicide; and step 4, preparing the hard carbon nano material. According to the invention, the defects of low capacity, low initial efficiency, low lithium / sodium rapid intercalation / deintercalation capacity and the like of the hard carbon negative electrode material in the prior art are overcome. The prepared modified nano zirconium silicide is combined with treated waste fruit kernels, so that the obtained hard carbon nano material not only has the advantage of higher capacity than common hard carbon, but also overcomes the defects that the common hard carbon is low in first-time efficiency and relatively low in rapid ion intercalation / deintercalation capacity.

Description

Technical field [0001] The invention relates to the field of carbon nano materials, in particular to a preparation method and application of hard carbon nano materials for ion batteries. Background technique [0002] With the tremendous progress and rapid development of the information age, multifunctional portable electronic devices, electric vehicles, aircraft, artificial power assistance and other equipment have put forward higher requirements for energy storage materials. Therefore, the research and development of new lithium battery electrode materials such as high specific capacity, high rate, and high safety is extremely urgent. [0003] At present, traditional carbon anode materials mainly include artificial graphite, natural graphite, mesocarbon microspheres, soft carbon, hard carbon, etc., among which hard carbon is difficult to graphitize carbon, which has random order, stable structure and long charge-discharge cycle life, and is safe Better performance and other advan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/62H01M10/0525H01M10/054B82Y40/00
CPCB82Y40/00H01M4/362H01M4/583H01M4/62H01M4/624H01M10/0525H01M10/054Y02E60/10
Inventor 李伟力王新龙张爽
Owner 宁波禾木纳米科技有限公司
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