CN109767929A - Porous carbon electrodes derived from a kind of organic salt - Google Patents
Porous carbon electrodes derived from a kind of organic salt Download PDFInfo
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- CN109767929A CN109767929A CN201910215428.0A CN201910215428A CN109767929A CN 109767929 A CN109767929 A CN 109767929A CN 201910215428 A CN201910215428 A CN 201910215428A CN 109767929 A CN109767929 A CN 109767929A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Abstract
The present invention relates to a kind of organic salts using nontoxic, inexpensive and very easy acquisition as carbon source, and room temperature synthesizes porous carbon electrode material with high performance in next step.The carbon source is ethylenediamine tetra-acetic acid (EDTA) tripotassium salt, and the derived carbon after being carbonized is as electrode material.Material after direct carbonization has reasonable pore-size distribution and superior chemical property, so that the preparation process of porous carbon electrodes is further simplified synthesis process and reduces preparation cost.Magnesium salts can be added during one-step synthesis or zinc salt further regulates and controls, supercapacitor and capacitor desalination and removing heavy metals ion field are applied to according to performance.Material according to the present invention and preparation method, the characteristics of due to its simple low-cost and high-performance, be suitble to supercapacitor and capacitance method desalination with except metal ion field large-scale promotion application.
Description
Technical field:
The present invention relates to supercapacitors and new energy materials field, and in particular to a kind of electricity of porous carbon derived from organic salt
The preparation method of pole.
Background technique:
Porous carbon materials specific capacitance with higher and good multiplying power property, and abundance, large specific surface area are right
The pore structure that carbon material performance has a major impact can be regulated and controled by different synthetic methods, be study extensively at present it is super
Grade capacitor electrode material.However, it also has certain limitation.On the whole, it is limited to complicated preparation method or higher
Cost or carbon source reserves the problems such as, functionization receives obstruction.Porous carbon materials are always the object of numerous studies for many years,
And with the development of the times, its chemical property and structure are required higher and higher.In order to further enhance porous carbon
The problems in the application of material, and solve preparation process, further improve the performance of porous carbon electrode material, needs greener
Color, simple, low cost and high performance preparation process and carbon source.
In general, in order to improve the performance of supercapacitor, other than increasing specific surface area, another method
It is with oxygen-containing, nitrogen or phosphorous functional group change carbon material, this can pass through fake capacitance effect and improve porous carbon and electrolysis
The wetability of matter carrys out significant raising total capacitance.The existing frequently-used method for preparing derivative porous carbon materials is template method or needs to live
Agent, however there are several disadvantages for this method, such as its preparation need to take a long time, with toxic or corrosive reagents, and
It needs further to activate, it is difficult to expand scale and commercialization.Therefore, spread out by easy sustainable and inexpensive method preparation
Raw porous carbon is still the challenge for needing to overcome.
Summary of the invention:
In view of shortcoming as indicated above, it is an object of the invention to we have proposed a kind of very simple sides
Method, by being directly pyrolyzed nitrogenous organic salt, ethylenediamine tetra-acetic acid (EDTA) tripotassium salt is made in the case where no activation process
The standby porous carbon materials with high surface area.The present invention proposes that using EDTA-3K, this raw material is readily available as raw material, preparation
Simple process, mild condition and cost is relatively low.Change some experiment parameters in preparation process, the ratio table of Lai Gaishan porous carbon materials
Area and pore-size distribution, Lai Tigao specific capacitance.Prepared porous carbon materials large specific surface area, aperture is adjustable, and electrochemistry
Superior performance.The present invention includes the following steps: to take a certain amount of EDTA-3K first, with the heating speed of 10 DEG C/min in tube furnace
Rate takes out sample after keeping the temperature 1h, impurity is removed after cooling, obtains derived carbon after dry to 700 DEG C.
Meaning of the present invention: the invention, which provides one kind, to provide original with the raw material of large scale preparation porous carbon electrodes
Expect itself to contain nitrogen, directly be carbonized to obtain product in a step solve the addition template during common synthesis carbon material
And toxic reagent problem, meet the needs of sustainable development, is expected to realize in supercapacitor and new energy materials field big
Scale uses.
Detailed description of the invention:
Fig. 1 is the specific capacitance of porous carbon materials prepared under different temperatures；
Fig. 2 is the cyclic voltammetry curve of porous carbon materials under condition of different temperatures, and sweeping speed is 100mv s-1。
Fig. 3 is the constant current charge-discharge curve of prepared porous carbon materials under condition of different temperatures, and sweeping speed is 1A g-1。
Specific embodiment:
Embodiment 1:
5g EDTA-3K is weighed first, with the heating rate of 10 DEG C/min to 700 DEG C in tube furnace, is taken out after keeping the temperature 1h
Sample removes impurity after cooling, and then washing filters, and obtains product after vacuum drying.The specific capacitance of material prepared, circulation volt
Pacify curve and constant current charge-discharge curve difference is as shown in Figs. 1-3.
Embodiment 2:
The material preparation process of embodiment 2 and embodiment 1 is essentially identical, except that temperature is different in carbonisation,
600 DEG C of heat preservation 1h are warming up to, other processes and embodiment 1 are identical, as shown in Figs. 1-3 to the test result of its performance.
Embodiment 3:
The preparation process of the present embodiment, carburizing temperature are 800 DEG C, other steps are identical with embodiment, the test of performance
As a result as shown in Figs. 1-3.
The present invention is not limited to above example, without departing from the present invention, can carry out any without departing from this
The change made under the spiritual essence and principle of invention, substitution should be equivalent substitute mode, and additive regulation is added
Pore structure is included within the scope of the present invention.
Claims (5)
1. one kind itself can contain nitrogen, a direct step with the organic salt of large scale preparation porous carbon electrodes, provided raw material
Carbonization obtains product, solves the problems, such as that the toxic reagent during commonly synthesis carbon material is responsible for preparation.
2. the derivative porous carbon electrodes of a kind of salt according to claim 1, it is characterised in that: raw material used is ethylenediamine tetraacetic
Acetic acid tripotassium salt.
3. a kind of preparation method of the derivative porous electrode of salt according to claims 1 and 2, it is characterised in that: it was synthesized
Journey is salt direct carbonization one-step synthesis method, does not add any other reagent.
4. a kind of preparation method of the derivative porous electrode of salt according to claims 1 and 2, it is characterised in that: it was synthesized
Additive, including but not limited to magnesium salts and zinc salt is added in Cheng Zhongke, for regulating and controlling pore structure and performance.
5. a kind of according to claim 1, preparation method of the derivative porous electrode of salt described in 2,3 and 4, it is characterised in that: this electricity
Pole material is applied to electrode of super capacitor and capacitance method heavy-metal ion removal and desalting process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910215428.0A CN109767929A (en) | 2019-03-21 | 2019-03-21 | Porous carbon electrodes derived from a kind of organic salt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910215428.0A CN109767929A (en) | 2019-03-21 | 2019-03-21 | Porous carbon electrodes derived from a kind of organic salt |
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| CN109767929A true CN109767929A (en) | 2019-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816452A (en) * | 2020-06-24 | 2020-10-23 | 西安交通大学 | Two-dimensional carbon sheet electrode material with uniform sub-nanopore distribution and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964412A (en) * | 2013-01-30 | 2014-08-06 | 北京化工大学 | Preparation method of nitrogen-doped porous-structure carbon material |
| CN104609518A (en) * | 2015-01-08 | 2015-05-13 | 北京化工大学 | Method for selectively removing Fe<2+> and/or Fe<3+> from industrial waste water through electric adsorption technology |
| CN105854801A (en) * | 2016-05-10 | 2016-08-17 | 江苏大学 | Nitrogen-doped porous carbon material and preparation method and application thereof |
| JP2017165603A (en) * | 2016-03-14 | 2017-09-21 | 宇部興産株式会社 | Porous carbon material and method for producing the same |
-
2019
- 2019-03-21 CN CN201910215428.0A patent/CN109767929A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964412A (en) * | 2013-01-30 | 2014-08-06 | 北京化工大学 | Preparation method of nitrogen-doped porous-structure carbon material |
| CN104609518A (en) * | 2015-01-08 | 2015-05-13 | 北京化工大学 | Method for selectively removing Fe<2+> and/or Fe<3+> from industrial waste water through electric adsorption technology |
| JP2017165603A (en) * | 2016-03-14 | 2017-09-21 | 宇部興産株式会社 | Porous carbon material and method for producing the same |
| CN105854801A (en) * | 2016-05-10 | 2016-08-17 | 江苏大学 | Nitrogen-doped porous carbon material and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816452A (en) * | 2020-06-24 | 2020-10-23 | 西安交通大学 | Two-dimensional carbon sheet electrode material with uniform sub-nanopore distribution and preparation method and application thereof |
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