CN103373722A - Preparation of nano-graphite carbon sol - Google Patents
Preparation of nano-graphite carbon sol Download PDFInfo
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- CN103373722A CN103373722A CN2012101107168A CN201210110716A CN103373722A CN 103373722 A CN103373722 A CN 103373722A CN 2012101107168 A CN2012101107168 A CN 2012101107168A CN 201210110716 A CN201210110716 A CN 201210110716A CN 103373722 A CN103373722 A CN 103373722A
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Abstract
The invention relates to a preparation of nano-graphite carbon sol. The preparation comprises the following steps of: placing an anode graphite electrode and a corrosion resistant plate into oxidation tanks according to the arrangement of positive and negative electrodes, separating the positive and negative electrodes with a plastic net; connecting the electrodes with a power supply in series; adding an electrolyte solution once into the oxidation tanks, wherein the total adding amount of electrolyte is lower than 0.1% of the weight of the electrolyte solution; switching the power supply for oxidation treatment, wherein the current is controlled to be 5-150mA/cm<2>, the voltage in each tank is controlled to 10+/-3V, the temperature is controlled to be below 60DEG C; stirring every 4-12 hours; detecting the graphite carbon concentration in the oxidation tanks, when the sol concentration is 0.1-5%, after oxidation is finished, obtaining solutions in the oxidation tanks, namely the nano-graphite carbon sol. The invention has the advantages of low production cost, stable product quality and no pollution, and meets the requirement of industrialization mass production, and also has the characteristics of high capacity of adapting to high and low temperatures, and the application field is extremely wide.
Description
Technical field
The present invention relates to a kind of preparation method who prepares nano carbon sol.
Background technology
Carbon materials is a part very important in the non-metallic material, and because its atomic arrangement mode is different, performance difference is very large, and carbon materials is very large because of its atomic arrangement mode difference performance difference equally in nano-scale range.Studies show that in large quantities the graphite-structure carbon of nano-scale range has the characteristic that many stock size scope graphite carbons are not had, its range of application is very extensive.But, when the graphite carbon size reaches nano-scale range, because it has strong adsorptivity and with negative electricity, thereby makes the very easy reunion of nano-graphite carbon materials, the difficult dispersion, so become the difficult problem of preparation nano-graphite carbon materials and application, only have at present a few countries to produce, its complex manufacturing, cost is high, easily produce dust pollution, be unfavorable for large-scale industrial production.
Summary of the invention
Purpose of the present invention is to provide a kind of technique simple, and production cost is low, and result of use is good, preparation of nano-graphite carbon sol by anode graphite electrode oxidation that suitability for industrialized is produced and preparation method thereof.
The present invention adopts the anode graphite electrode for anodal, and stainless steel plate is negative pole, and puts into oxidation trough by the positive and negative electrode arrangement, separates with plastic wire between the positive and negative electrode, and electrode is connected with the parallel-series mode with power acquisition.Electrolytic solution is poured in the oxidation trough, and ionogen adopts sulfuric acid or potassium hydroxide to add in the electrolytic solution, and it adds total amount by below 0.4% of electrolyte weight, and limit once adds in the electrolytic solution.Be communicated with power supply, carry out oxide treatment, current control is at 75mA/cm
2, every bath voltage is controlled at 20 ± 2V, and temperature is controlled at below 85 ℃, stirs once every 0.5 hour.Detect graphite carbon concentration in the groove, when collosol concentration reached 0.2% in the groove, oxidation finished, and solution is nano graphite carbon sol in the groove.
Routine techniques shows, after forming, carbon particulate is easy to again reunite, the generation of this phenomenon of weaving, only have at present two kinds of basic skills: the first forms electrostatic double layer on the surface of nano particle, make that like charges repels each other between the nano particle, it two is that nano grain surface wraps up with another kind of material, and it can not be contacted with each other.
It is that positive and negative electrode inserts in the electrolyte solution that the present invention adopts anode graphite electrode and stainless steel plate, after the energising, carbon atom obtains energy at positive pole under the effect of electric current, when energy surpasses chemical bonding force between carbon atom, and when obtaining simultaneously to have the nano-scale range of formation carbon microparticle surface energy, this part carbon atom will break away from anode plate, form the carbon granule of nano-scale range and be free in the electrolytic solution.Because it has extremely strong Selective adsorption, nano carbon particle can be selected electricity layer negative ion, mutually repels forming double electrical layers between them, thereby makes nano carbon sol liquid be stablized formation.
Production cost of the present invention is low, and constant product quality is pollution-free, has the advantages such as requirement that suitability for industrialized is given birth on a large scale, also has the height of adaptation.The characteristics of low temperature ability.Be applicable to the industries such as battery manufacture, colour TV, oil, agricultural, electrically heated components and parts, electro-conductive material, health care, Application Areas and extensive.
Embodiment
Oxidation trough of the present invention adopts the non-metallic material of insulativity to make, the anode graphite electrode adopts purity to make greater than 99% graphite, negative pole adopts the stainless steel plate of 2mm thickness, use stainless steel plate not only can improve thickness and the tankage sheet number of the anode graphite plate in the oxidation trough, and can reduce production costs significantly.According to the watt level of DC power supply device, multi-disc anode graphite electrode and stainless steel plate can be put into respectively two or more oxidation troughs by the positive and negative electrode arrangement.Negative pole has more a slice than positive pole.Separate with the vinyon net between the positive and negative electrode, electrode is connected with the parallel-series mode with power acquisition, and positive pole and negative pole in every groove are connected in parallel respectively, between groove and the groove for connecting.
Electrolytic solution (deionized water) is poured in the oxidation trough, and electrolytic solution can be done suitably to adjust according to the character of required nano-graphite colloidal sol, and acidic sol can add the sulfuric acid of proportion 1.28, and alkaline colloidal sol can add the potassium hydroxide of proportion 1.30.Electrolytical adding total amount is by below 0.4% of electrolyte weight, and limit once adds in the electrolytic solution, thereby is conducive to improve the preparation purity of Nano sol.When continuing to produce, get final product with remaining nanometer carbon liquid in the groove, the colloidal sol of producing like this is high purity.
Plugged carries out oxide treatment, and current control is at 75mA/m
2, every bath voltage is controlled at 20 ± 2V, and temperature is controlled at below 85 ℃, stirs once every 0.5 hour, and churning time is 15 minutes.In the production process, when anode thickness during less than 10mm, positive source can be changed, detect graphite carbon concentration in the groove, when collosol concentration was 0.1～5%, oxidation finished, solution is nano graphite carbon sol in the groove, and less than 10nm, all the other are 20% also in nano-scale range more than 80% for granularity.
Claims (1)
1. method for preparing nano graphite carbon sol, it is characterized in that: in oxidation trough, just pressing, negative potential is arranged, just, separate with plastic wire between the negative potential, electrode is connected with the parallel-series mode with power acquisition, electrolytic solution is poured in the oxidation trough, ionogen adopts sulfuric acid or potassium hydroxide to add in the electrolytic solution, it adds total amount by the adding below 0.4% of electrolyte weight, plugged carries out oxide treatment, every bath voltage is controlled at 20 ± 2V, temperature is controlled at below 85 ℃, stirs once every 0.5 hour, makes the interior collosol concentration of groove reach 2% preparation of nano-graphite carbon sol by anode graphite electrode oxidation; Positive and negative electrode adopts respectively anode graphite and stainless steel plate, and current control is at 75mA/cm
2, ionogen is limit once according to quantity and is added in the electrolytic solution during preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101107168A CN103373722A (en) | 2012-04-17 | 2012-04-17 | Preparation of nano-graphite carbon sol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101107168A CN103373722A (en) | 2012-04-17 | 2012-04-17 | Preparation of nano-graphite carbon sol |
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| CN103373722A true CN103373722A (en) | 2013-10-30 |
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| CN2012101107168A Pending CN103373722A (en) | 2012-04-17 | 2012-04-17 | Preparation of nano-graphite carbon sol |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794792A (en) * | 2014-02-28 | 2014-05-14 | 江苏丽港科技有限公司 | Method for preparing nano carbon sphere materials for negative electrode of lithium ion battery |
| CN106544689A (en) * | 2016-10-03 | 2017-03-29 | 北京奈艾斯新材料科技有限公司 | A kind of method that utilization mineral carbon prepares nano carbon sol |
| CN104760949B (en) * | 2014-01-08 | 2017-04-05 | 奈创科技股份有限公司 | Graphene generating means |
| CN107904612A (en) * | 2017-11-17 | 2018-04-13 | 刘广安 | A kind of method that nano carbon sol is prepared with native graphite |
| CN109122078A (en) * | 2018-08-31 | 2019-01-04 | 沈阳君道丰农业科技有限公司 | Using nanotechnology treatments small coarse cereals kind method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378975A (en) * | 2002-05-17 | 2002-11-13 | 贵州航天纳米科技有限责任公司 | Process for preparing nano graphite carbon sol with dual graphite electrodes |
| CN1557700A (en) * | 2004-01-21 | 2004-12-29 | 刘芳德 | Preparation of nano-graphite carbon sol by anode graphite electrode oxidation method |
| CN1837037A (en) * | 2006-04-17 | 2006-09-27 | 中国江南航天工业集团江南工业贸易公司 | Process for preparing nano carbon sol |
-
2012
- 2012-04-17 CN CN2012101107168A patent/CN103373722A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378975A (en) * | 2002-05-17 | 2002-11-13 | 贵州航天纳米科技有限责任公司 | Process for preparing nano graphite carbon sol with dual graphite electrodes |
| CN1557700A (en) * | 2004-01-21 | 2004-12-29 | 刘芳德 | Preparation of nano-graphite carbon sol by anode graphite electrode oxidation method |
| CN1837037A (en) * | 2006-04-17 | 2006-09-27 | 中国江南航天工业集团江南工业贸易公司 | Process for preparing nano carbon sol |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760949B (en) * | 2014-01-08 | 2017-04-05 | 奈创科技股份有限公司 | Graphene generating means |
| CN103794792A (en) * | 2014-02-28 | 2014-05-14 | 江苏丽港科技有限公司 | Method for preparing nano carbon sphere materials for negative electrode of lithium ion battery |
| CN103794792B (en) * | 2014-02-28 | 2015-09-30 | 江苏丽港科技有限公司 | A kind of preparation method of used as negative electrode of Li-ion battery nano carbon microsphere material |
| CN106544689A (en) * | 2016-10-03 | 2017-03-29 | 北京奈艾斯新材料科技有限公司 | A kind of method that utilization mineral carbon prepares nano carbon sol |
| CN107904612A (en) * | 2017-11-17 | 2018-04-13 | 刘广安 | A kind of method that nano carbon sol is prepared with native graphite |
| CN109122078A (en) * | 2018-08-31 | 2019-01-04 | 沈阳君道丰农业科技有限公司 | Using nanotechnology treatments small coarse cereals kind method and application |
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Application publication date: 20131030 |