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Preparation method of biomass lamella carbon material and application

A lamellar carbon and biomass technology, which is applied in the preparation/purification of carbon, the manufacture of electrolyte batteries, electrochemical generators, etc., can solve the problems of bronchopneumonia, long storage time, hidden safety hazards, etc., and achieves wide sources and cheap raw materials. , the effect of good cycle stability

Active Publication Date: 2014-07-02
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the quality of the porogen used in the preparation method is 5 times that of the coconut shell, and the standing time is too long; the price of potassium hydroxide on the market is about 10,000 yuan / ton, and the cost is high; and zinc chloride is irritating And corrosive, long-term inhalation will lead to bronchopneumonia, severe inhalation can be fatal, there is a big safety hazard

Method used

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  • Preparation method of biomass lamella carbon material and application
  • Preparation method of biomass lamella carbon material and application
  • Preparation method of biomass lamella carbon material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of biomass sheet carbon material, adopts betel nut shell as preparation raw material, comprises the following steps:

[0035] S1. Pretreatment: first wash and dry the dried betel nut shells bought on the market with water, then cut the dried betel nut shells into pieces, put them in a sodium hydroxide solution with a concentration of 2mol / L, and soak them in a water bath at 80°C After 10 hours, put it into 2mol / L dilute hydrochloric acid and boil until the betel nut shell is completely swollen, then wash it with deionized water for 5 times, and then dry it in vacuum at 60°C for later use;

[0036] S2. Preparation of biomass sheet carbon material: the betel nut shell treated in S1 was placed in a tubular resistance furnace, carbonized at 950°C for 1 hour under the protection of nitrogen, the heating rate was 5°C / min, and naturally cooled to room temperature. Then put the prepared carbon material into a ball mill for 12 hours and pass through...

Embodiment 2

[0041] Except that the concentration of sodium hydroxide solution in step S1 is 1mol / L, other conditions are the same as embodiment 1;

Embodiment 3

[0043]Except that the concentration of dilute hydrochloric acid in step S1 is 1 mol / L, other conditions are with embodiment 1;

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Abstract

The invention discloses a preparation method of a biomass lamella carbon material and application of the biomass lamella carbon material in a lithium ion battery. The biomass lamella carbon material is prepared by processing betel nut shells through an alkaline solution and an acid solution, carbonizing the betel nut shells and ball milling the betel nut shells and can be used as a battery electrode material. The renewable betel nut shells are selected as a carbon source, the raw material is cheap and wide in source, the preparation process is simple, the cycling stability of the prepared battery is good, and the capacity is large.

Description

technical field [0001] The invention belongs to the technical field of carbon material preparation, and in particular relates to a preparation method and application of a biomass sheet carbon material. technical background [0002] In recent years, with the gradual reduction of non-renewable energy sources and more and more serious environmental problems in the world, green and pollution-free new high-energy chemical power sources have become a hot spot for the development of countries all over the world. Due to the advantages of high energy, long life, low consumption, no pollution, no memory effect, small self-discharge, low internal resistance, high cost performance, and less pollution, lithium-ion batteries are widely used in optoelectronics, information, transportation, national defense and military fields. . [0003] Lithium-ion batteries are mainly composed of positive electrodes, negative electrodes, and electrolyte solutions. The negative electrode material is one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/583H01M10/058H01M10/0525C01B31/02C01B32/05
CPCY02E60/122C01B32/05H01M4/587H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 赵灵智张怡琼唐芬玲董美王碧霄钟倩平苏炜跃
Owner SOUTH CHINA NORMAL UNIVERSITY
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