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A kind of method that utilizes bean dregs to prepare sodium-ion battery electrode carbon material

A sodium-ion battery and carbon material technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of high price and shortage, achieve the effects of protecting the environment, simple process, and broadening the production of raw materials

Active Publication Date: 2016-08-24
苏州德加能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current output of graphene has reached the mass production level, the price is more than 500 yuan / gram, and the better price is more than 1,000 yuan / gram, far exceeding the market price of gold; restricted by factors such as technology and high price, the domestic market has previously There has been a lack of mature graphene products

Method used

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  • A kind of method that utilizes bean dregs to prepare sodium-ion battery electrode carbon material
  • A kind of method that utilizes bean dregs to prepare sodium-ion battery electrode carbon material
  • A kind of method that utilizes bean dregs to prepare sodium-ion battery electrode carbon material

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Embodiment 1

[0025] The present embodiment provides a kind of method utilizing bean dregs to prepare electrode carbon material of sodium ion battery, and it comprises the following steps:

[0026] (a) Dissolve 2.5ml of concentrated sulfuric acid in 50ml of deionized water, and ultrasonicate for 20 minutes to obtain a sulfuric acid solution; add 1.5g of dried bean dregs powder to the above sulfuric acid solution, and put it in a polytetrafluoroethylene autoclave; Put the high-pressure reaction kettle into a high-temperature furnace and heat it at 180°C for 48 hours for pre-carbonization. After cleaning and filtering the product five times, vacuum-dry it, then put it in a tube furnace, and keep the carbonized product at 700°C for 2 hours. , put the carbonized product into a ball mill and mill it for 3 hours;

[0027] (b) Dissolve 6g of potassium permanganate in a mixed solution of 20ml of concentrated sulfuric acid and 10ml of concentrated nitric acid at 0°C; then add 1.5g of ball-milled car...

Embodiment 2

[0032] The present embodiment provides a kind of method utilizing bean dregs to prepare electrode carbon material of sodium ion battery, and it comprises the following steps:

[0033] (a) Dissolve 2ml of concentrated sulfuric acid in 20ml of deionized water, and ultrasonicate for 10 minutes to obtain a sulfuric acid solution; add 1g of dried bean dregs powder to the above sulfuric acid solution, and put it in a polytetrafluoroethylene autoclave; Put the reactor into a high-temperature furnace and heat it at 150°C for 50 hours for pre-carbonization. After washing and filtering the product three times, vacuum-dry it, then put it into a tube furnace, and keep the carbonized product at 400°C for 5 hours. The product was put into a ball mill for ball milling for 5 hours;

[0034](b) Dissolve 5g of potassium permanganate in a mixed solution of 7.5ml of concentrated sulfuric acid and 5ml of concentrated nitric acid at 5°C; then add 1g of the ball-milled carbonized product to it and k...

Embodiment 3

[0038] The present embodiment provides a kind of method utilizing bean dregs to prepare electrode carbon material of sodium ion battery, and it comprises the following steps:

[0039] (a) Dissolve 5ml of concentrated sulfuric acid in 100ml of deionized water, and ultrasonicate for 30 minutes to obtain a sulfuric acid solution; add 5g of dried bean dregs powder to the above sulfuric acid solution, and put it into a polytetrafluoroethylene autoclave; Put the reaction kettle into a high-temperature furnace and heat it at 250°C for 24 hours for pre-carbonization. After cleaning and filtering the obtained product four times, vacuum-dry it, then put it into a tube furnace, and keep the carbonized product at 1000°C for 1 hour. The carbonized product was put into a ball mill for ball milling for 1 hour;

[0040] (b) Dissolve 10g of potassium permanganate in a mixed solution of 45ml of concentrated sulfuric acid and 15ml of concentrated nitric acid at 3°C; then add 3g of ball-milled ca...

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Abstract

The present invention relates to a method for preparing an electrode carbon material of a sodium battery by using bean dregs. The method comprises the following steps: (a) concentrated sulfuric acid is dissolved in deionized water to form a sulfuric acid solution; bean dreg powder is added into the sulfuric acid solution; the mixture of the sulfuric acid solution and the bean dreg is placed in an autoclave to perform pre-carbonization, dried, and placed in an inert gas atmosphere to perform high-temperature carbonization for 1-5 hours so as to obtain a carbonization product; (b) potassum permanganate is taken and dissolved in a mixed solution of the concentrated sulfuric acid and concentrated azotic acid; then the carbonization product is added into the solution mixture; the deionized water is added; finally, hydrogen peroxide is added to react till bubbles are no longer generated; and (c) the deionized water is used to dilute the stripped product solution, and then ethylenediaminc is added to react at 60-90 DEG C for 3-10 hours. The carbon material is prepared by using the waste bean dregs by virtue of the method for preparing an electrode carbon material of the sodium battery by using bean dregs, so that unexpected effects are achieved: graphene with a better quality is prepared, the cost is lowered and meanwhile, no pollution is generated; the process is relatively simple, and the environmental protection is facilitated.

Description

technical field [0001] The invention belongs to the field of battery materials, and relates to a sodium ion battery electrode carbon material, in particular to a method for preparing the sodium ion battery electrode carbon material by using bean dregs. Background technique [0002] Soybeans are also called soybeans, mud beans, horse feed beans, etc. The main production areas in my country are in the Northeast. In 2014, China's refined edible vegetable oil output reached 65.34 million tons, an increase of 5% over the same period last year. Every city in China has tens of thousands of bean products workshops such as soy milk and tofu, and these workshops produce a large amount of waste such as bean dregs every day. The utilization rate of bean dregs is low, and the traditional utilization method is to use bean dregs as animal feed and feed them directly to animals. In Japan, a large amount of okara is burned. In Hong Kong, okara is usually piled up as waste without any use....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02C01B31/04H01M4/133
CPCY02E60/10
Inventor 晏成林杨庭舟钱涛
Owner 苏州德加能源科技有限公司