CN108793158A - A kind of preparation and its application of roe base porous carbon materials - Google Patents
A kind of preparation and its application of roe base porous carbon materials Download PDFInfo
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- CN108793158A CN108793158A CN201810689136.6A CN201810689136A CN108793158A CN 108793158 A CN108793158 A CN 108793158A CN 201810689136 A CN201810689136 A CN 201810689136A CN 108793158 A CN108793158 A CN 108793158A
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- roe
- porous carbon
- carbon materials
- matrix precursor
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
Abstract
The invention discloses a kind of roe base porous carbon materials, roe is carbonized through low temperature and forms carbon matrix precursor in advance, and gained carbon matrix precursor and alkali inorganic substance are directly mixed together calcining and roe base porous carbon materials are prepared.Preparation method includes the following steps：1）The preparation of carbon matrix precursor；2）The activation of carbon matrix precursor；3）The post-processing of porous carbon materials.As the application of electrode material for super capacitor, when current density is 1 A g‑1When, specific capacitance value range is in 222 ~ 396 F g‑1.The method of the present invention is simple for process, easy to operate, easy to implement and obtained roe base porous carbon materials are had excellent performance as electrode material for super capacitor.
Description
Technical field
The present invention relates to the preparation fields of biomass-based carbon material, and in particular to a kind of system of biomass-based porous carbon materials
Standby and its application.
Background technology
Rapid growth with population in the world and economic rapid development, are continuously increased the demand of the energy.Global work
Industry consumes the non-renewable resources such as a large amount of coal, oil, natural gas while rapid development.
Ultracapacitor is also known as electrochemical capacitor, is a kind of novel electrochemical energy conversion and energy storage device, has
Power density is big, have extended cycle life, use temperature range is wide, storage density is special between traditional capacitor and commercial batteries etc.
Point.Ultracapacitor achieves major progress in theoretical research and practical application, but ultracapacitor is still faced with energy
Density deficiency and the high problem of production cost.Electrode material is the core component of ultracapacitor, is risen to performance of the supercapacitor
Important function.
Porous carbon nanomaterial is related on surface and electric conductivity due to higher specific surface area and certain electric conductivity
Electrochemical electrode material and pollutant process etc. have huge application potential.Especially in electrode material for super capacitor
Aspect, high surface area, multidimensional pore passage structure, suitable aperture and the certain electric conductivity of porous carbon are all conducive to charge and electrolysis
It is close to effectively improve capacitor element energy to provide compared with Fabrication of High Specific Capacitance, high rate performance and cyclical stability for the quick transmission of matter ion
Degree and power out-put characteristic.
The conductive good, large specific surface area of biomass-based porous carbon, chemical property are stable, source is wide, cheap etc.
Advantage, biomass-based porous carbon electrode material can effectively improve the energy density of ultracapacitor, reduce production cost.
Roe is as a kind of recyclable organism material, the generally existing in our life.It is reported that China in 2017
Fish total output is 4039.94 ten thousand tons, and for roe as a kind of renewable raw materials, quantity is very considerable.Roe tool simultaneously
There is the advantages that price is cheap and easy to get, renewable, environmental pollution is small.And currently, roe is used as food materials mostly, as carbon material
Source is applied to ultracapacitor almost without report, if can be by roe applied to environmentally friendly and value-added green energy resource
It is very valuable.Since itself is rich in elements such as nitrogen, sulphur, phosphorus, iron, that is, it is not necessarily to pass through outer doping, it may have good
Chemical property.Every 100 grams of roe contains 63.85 ~ 85.29 grams of moisture；0.63 ~ 4.19 gram of fat；Thick protein 12.08 ~
33.01 grams；1.24 ~ 2.06 grams of coarse ash（Coarse ash contains a large amount of phosphate and calcium carbonate again, wherein phosphatic averagely contain
Amount has reached 46% or more.In addition, also containing minerals and a large amount of brains such as abundant protein and calcium, phosphorus, iron in fish-egg
Phosphatide.
Based on this, roe is selected to expect as source, is rich in nitrogen phosphate and sulfur element using roe itself, can effectively improve carbon
Material surface wetability, and form fake capacitance.Meanwhile introducing using potassium hydroxide as activator, it realizes and improves porous active raw material of wood-charcoal
The specific surface area of material optimizes its pore-size distribution, so as to improve its specific capacity finiteness problem as electrode material.
Invention content
The object of the present invention is to provide a kind of preparations and its application of roe base porous carbon materials.It is rich in using roe itself
Nitrogen phosphate and sulfur element can effectively improve carbon material surface wetability, and form fake capacitance, meanwhile, it introduces with potassium hydroxide
For activator, realizes the specific surface area for improving porous carbon materials, optimize its pore-size distribution, so as to improve it as electrode material ratio
The limited problem of capacity.
In order to achieve the above-mentioned object of the invention, the present invention uses roe for carbon source, use alkaline activation object KOH for activator into
Row high-temperature activation forms porous carbon materials.
Realizing the specific technical solution of the object of the invention is：
A kind of roe base porous carbon materials, roe are carbonized through low temperature and form carbon matrix precursor in advance, gained carbon matrix precursor and basic mineral
Object is directly mixed together calcining and roe base porous carbon materials is prepared.The roe is carp seed, crucian seed, grass carp seed.
The preparation method of roe base porous carbon materials, includes the following steps：
Step 1）The preparation of carbon matrix precursor, roe are dried at 80 ~ 100 DEG C, then will be dried after washing removes surface impurity
Roe afterwards is broken into fritter, and being carbonized in advance through low temperature generates carbon matrix precursor, and wherein calcination temperature is 400 ~ 500 DEG C, calcination time
For 1 ~ 2h；
Step 2）The activation of carbon matrix precursor, by certain mass ratio, by step 1）The carbon matrix precursor and alkali inorganic substance of gained are pressed
Mass ratio is 1.0:(2.0 ~ 4.0) it mixes, is mixed, after drying, is put into tube furnace in nitrogen atmosphere in distilled water
Under protection, with activation temperature for 700 ~ 900 DEG C, it is condition that soak time, which is 1 ~ 2h, calcining and activating activated after porous carbon
Material；The alkali inorganic substance is KOH；
Step 3）The post-processing of porous carbon materials, by step 2）Gained porous carbon materials are impregnated with 1M hydrochloric acid solutions, by washing
It washs, filter, drying, grinding and obtain roe base porous carbon materials.
The roe base porous carbon materials advantageous effects through experimental tests of gained of the invention are as a result as follows：
Scanned electron microscope experiment detection, prepared roe base porous carbon materials are in flocculent structure, have a large amount of holes on surface；
It tests and detects through electro-chemical test, prepared roe base porous carbon materials have good capacitive property, work as electric current
Density is 1A g-1When, specific capacitance value range is in 222 ~ 396 F g-1, in 20A g-1When high current density, recycled at 10000 times
Specific capacitance conservation rate still has 89% afterwards.
Therefore, roe base porous carbon materials of the invention have the following advantages the prior art：
One, design technology process of the present invention is simple, and activation temperature is relatively low, facilitates control, clean environment firendly, is easy to industrialization realization；
Two, roe of the present invention is raw material, using roe itself containing elements such as abundant nitrogen phosphate and sulfurs, that is, does not have to be doped,
Just have higher chemical property, cost relatively low；
Three, the application field of the biomass such as roe has been widened, the source for preparing the porous carbon raw material of high-performance has also been widened, has realized
Resource efficiently uses；
Four, the present invention as electrode material for super capacitor in application, with good cyclical stability and chemical property
Stablize；
Therefore, the present invention has broad application prospects in porous carbon materials and ultracapacitor field.
Description of the drawings：
Fig. 1 is the scanning electron microscopy picture figure of roe base porous carbon materials；
Fig. 2 is the capacitance cyclic voltammogram of roe base porous carbon materials；
Fig. 3 is charge-discharge performance curve of the roe base porous carbon materials in different current densities；
Fig. 4 is roe base porous carbon materials in 20 A g-1Loop test figure under current density.
Specific implementation mode
The present invention is described in further detail the content of present invention by embodiment, in conjunction with Figure of description, but is not pair
The restriction of the present invention.
Embodiment
A kind of preparation of roe base porous carbon materials
Step 1）The preparation of carbon matrix precursor, by carp seed after washing removes surface impurity, at 85 DEG C in air dry oven
Drying, is then crushed to small bulk by the carp seed after drying, will be carried out in tube furnace of the carp seed under nitrogen atmosphere protection
Calcining, calcination temperature are 500 DEG C, calcination time 2h, generate carbon matrix precursor；
Step 2）The activation of carbon matrix precursor, by certain mass ratio, by step 1）The carbon matrix precursor and alkaline inorganic material of gained
It is 1.0 in mass ratio:3.0 mixing are mixed in distilled water, after drying, put into tube furnace and are protected in nitrogen atmosphere
Under, with activation temperature for 800 DEG C, soak time 2h is condition, the porous carbon materials that calcining and activating is activated；The alkali
Property inorganic matter be KOH；
Step 3）The post-processing of porous carbon materials, by step 2）Gained porous carbon materials are impregnated with 1M HCl solutions, by washing
It washs, filter, drying, grinding and obtain egg white base porous carbon materials
By the scanned testing electronic microscope of the porous carbon materials prepared in embodiment, the results are shown in Figure 1, which is presented
A kind of cotton-shaped structure, there is a large amount of holes on surface.
Using the porous carbon materials prepared in embodiment as electrode material for super capacitor in application, electrolyte is water system
Cyclic voltammetry, the results are shown in Figure 2, shows good capacitive property.
Using the porous carbon materials prepared in embodiment as electrode material for super capacitor in application, electrolyte is water system
Different multiplying constant current charge-discharge under specific capacity test, the results are shown in Figure 3, when current density be 1 A g-1When, specific capacitance
It is worth up to 396 F g-1。
Using the roe base porous carbon materials prepared in embodiment as electrode material for super capacitor in application, electrolyte
For water-based cyclic charging and discharging test, the results are shown in Figure 4, in 20A g-1When high current density, specific capacitance value reaches 202F g-1,
Specific capacitance conservation rate still has 89 % after being recycled at 10000 times.
Claims (7)
1. a kind of roe base porous carbon materials, it is characterised in that：Roe is carbonized through low temperature and forms carbon matrix precursor in advance, gained carbon forerunner
Body and alkali inorganic substance are directly mixed together calcining and roe base porous carbon materials are prepared.
2. roe base porous carbon materials according to claim 1, it is characterised in that：The roe is carp seed, crucian seed, grass
Roe.
3. the preparation method of roe base porous carbon materials according to claim 1, it is characterised in that include the following steps：
Step 1）The preparation of carbon matrix precursor, roe are dried at 80 ~ 100 DEG C, then will be done after washing removes surface irregularities
Roe after dry is crushed to fritter, is carbonized in advance through low temperature and obtains carbon matrix precursor；
Step 2）The activation of carbon matrix precursor, by certain mass ratio, by step 1）The carbon matrix precursor and alkali inorganic substance of gained exist
It is mixed in distilled water, after drying, carries out calcining and activating in certain condition, obtain porous carbon materials；
Step 3）The post-processing of porous carbon materials, by step 2）Gained porous carbon materials are impregnated with hydrochloric acid solution, by washing,
Filtering, drying, grinding obtain roe base porous carbon materials.
4. preparation method according to claim 3, it is characterised in that：The step 1）The pre- Carbonization Conditions of roe low temperature are
400 ~ 500 DEG C, soak time is 1 ~ 2 h.
5. preparation method according to claim 3, it is characterised in that：The step 2）Carbon matrix precursor and basic mineral
The mass ratio of object is 1.0:( 2.0~4.0).
6. preparation method according to claim 3, it is characterised in that：The step 2）Alkali inorganic substance be hydroxide
Any one in potassium, sodium hydroxide, potassium carbonate, zinc chloride, calcining and activating condition is that activation temperature is 700 ~ 900 DEG C, activation
Time is 1 ~ 2 h.
7. application of the roe base porous carbon materials as electrode material for super capacitor, feature exist according to claim 1
In：When current density is 1 A g-1When, specific capacitance value range is in 222 ~ 396 F g-1。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017925A (en) * | 2020-01-06 | 2020-04-17 | 桂林电子科技大学 | Preparation and application of novel porous carbon material with high energy storage performance |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107863A (en) * | 2009-12-25 | 2011-06-29 | 北京化工大学 | Porous carbon material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107863A (en) * | 2009-12-25 | 2011-06-29 | 北京化工大学 | Porous carbon material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017925A (en) * | 2020-01-06 | 2020-04-17 | 桂林电子科技大学 | Preparation and application of novel porous carbon material with high energy storage performance |
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