CN109734085A - Potato-based porous carbon preparation method for material for electrode material for super capacitor - Google Patents
Potato-based porous carbon preparation method for material for electrode material for super capacitor Download PDFInfo
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- CN109734085A CN109734085A CN201910219707.4A CN201910219707A CN109734085A CN 109734085 A CN109734085 A CN 109734085A CN 201910219707 A CN201910219707 A CN 201910219707A CN 109734085 A CN109734085 A CN 109734085A
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- 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
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- Y02E60/13—Energy storage using capacitors
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Abstract
Potato-based porous carbon preparation method for material for electrode material for super capacitor, using potato as raw material, it is impregnated after peeling through potassium hydroxide solution, by in traditional carbon material preparation method high temperature cabonization and chemical activation combine, while potato is by high temperature cabonization, potassium hydroxide obtains the porous carbon materials with superior chemical property to its in-situ activation, one-step method.
Description
Technical field
The present invention relates to the technologies of preparing of the potato-based porous carbon materials for electrode material for super capacitor.
Background technique
Supercapacitor has high power density, the feature of long circulation life, fast charging and discharging, is one kind between secondary electricity
Novel energy storage device between pond and traditional capacitor.Porous carbon has big specific surface area, high conductivity, abundant
The advantages that aperture structure is to have been carried out commercialized electrode material for super capacitor at present.At present porous carbon mainly by apricot shell,
The biomass carbon source such as cocoanut shell, rice husk is prepared through high temperature cabonization and chemical activation, due to high temperature cabonization and chemical activation
It is carried out in two steps, therefore complex process, preparation cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of systems of potato-based porous carbon materials for electrode material for super capacitor
Preparation Method.
The present invention is the potato-based porous carbon preparation method for material for electrode material for super capacitor, and potato is gone
Stripping and slicing after skin, it is living through carbonization and chemistry with impregnating 100 DEG C of dryings after the h of 10 min ~ 4 in the KOH solution of 0.5 ~ 1.5 mol/L
Change latter step and porous carbon materials for electrode material for super capacitor are made, the specific steps are that:
(1) it wash with distilled water, will dice after peeling potatoes；
(2) gained bell potato wedge in step (1) is transferred in KOH solution and impregnates the h of 10 min ~ 4；
(3) soaked potato ball is placed in glass culture dish, is moved into dry in 100 DEG C of drying boxes；
(4) dried potato ball is transferred in crucible, is placed in tube furnace, it will be in tube furnace with vacuum pump assembly
Air extraction, makes in tube furnace air pressure lower than the vacuum state of 30 Pa；
(5) be passed through inert gas into tube furnace to normal pressure, open exhaust valve, with gas flowmeter control gas flow rate be 70 ~
80 mL/min, are continually fed into inert gas；
(6) so that temperature in pipe is risen to 600 DEG C with 3 DEG C/min heating rate, keep the temperature 2 h；
So that temperature in pipe is risen to 800 DEG C with 2 DEG C/min heating rate, keeps the temperature 2 h；
(7) so that tubular type in-furnace temperature is down to room temperature with 3 DEG C/min rate of temperature fall after step (6), take out sample；
(8) carbon material prepared in step (7) is placed in grind into powder in corundum mortar；
(9) the ground carbon material of step (9) is placed in Buchner funnel, wash with distilled water to neutral；
(10) carbon material obtained by step (9) is moved into glass culture dish, is placed in drying box drying, can be obtained and can be used for super electricity
The potato-based porous carbon materials of container electrode material.
The present invention impregnates after peeling through potassium hydroxide solution using potato as raw material, will be in traditional carbon material preparation method
High temperature cabonization and chemical activation combine, while potato is by high temperature cabonization, potassium hydroxide is to its in-situ activation, a step
Method obtains the porous carbon materials with superior chemical property.It is different from the mainstream preparation method of current porous carbon materials, this hair
Potato-based porous carbon materials in bright are that porous carbon materials are prepared in one-step method, are the important innovations to existing technology of preparing
And supplement.
Specific embodiment
The present invention is the potato-based porous carbon preparation method for material for electrode material for super capacitor, and potato is gone
Stripping and slicing after skin, it is living through carbonization and chemistry with impregnating 100 DEG C of dryings after the h of 10 min ~ 4 in the KOH solution of 0.5 ~ 1.5 mol/L
Change latter step and porous carbon materials for electrode material for super capacitor are made, the specific steps are that:
(1) it wash with distilled water, will dice after peeling potatoes；
(2) gained bell potato wedge in step (1) is transferred in KOH solution and impregnates the h of 10 min ~ 4；
(3) soaked potato ball is placed in glass culture dish, is moved into dry in 100 DEG C of drying boxes；
(4) dried potato ball is transferred in crucible, is placed in tube furnace, it will be in tube furnace with vacuum pump assembly
Air extraction, makes in tube furnace air pressure lower than the vacuum state of 30 Pa；
(5) be passed through inert gas into tube furnace to normal pressure, open exhaust valve, with gas flowmeter control gas flow rate be 70 ~
80 mL/min, are continually fed into inert gas；
(6) so that temperature in pipe is risen to 600 DEG C with 3 DEG C/min heating rate, keep the temperature 2 h；
So that temperature in pipe is risen to 800 DEG C with 2 DEG C/min heating rate, keeps the temperature 2 h；
(7) so that tubular type in-furnace temperature is down to room temperature with 3 DEG C/min rate of temperature fall after step (6), take out sample；
(8) carbon material prepared in step (7) is placed in grind into powder in corundum mortar；
(9) the ground carbon material of step (9) is placed in Buchner funnel, wash with distilled water to neutral；
(10) carbon material obtained by step (9) is moved into glass culture dish, is placed in drying box drying, can be obtained and can be used for super electricity
The potato-based porous carbon materials of container electrode material.
Above-described preparation method, raw material are the cube for 1.1 cm of side length that the potato after peeling is cut into.
Above-described preparation method, the KOH solution of potato ball 0.5 ~ 1.5 mol/L of 100 mL in step (2)
It impregnates.
Above-described preparation method, potato ball dry 8 ~ 12 h of 100 DEG C of drying boxes in step (3).
Above-described preparation method, described vacuum pump assembly are two-stage lobe pump+liquid rotary pump.
Above-described preparation method, described inert gas are nitrogen.
Above-described preparation method, step (9) gained sample is wash with distilled water to pH=7,100 DEG C of 8 h of drying.
Embodiment 1:
(1) wash with distilled water, the small cube of 1.1 cm of side length will be cut into after peeling potatoes；
(2) 35min will be impregnated in the KOH solution for 0.5 mol/L that gained potato ball is transferred to 100 mL in step (1)；
(3) soaked potato ball in step (2) is placed in glass culture dish, moves into dry 8- in 100 DEG C of drying boxes
12 hours；
(4) potato ball dried in step (3) is transferred in crucible, is placed in tube furnace, it will with vacuum pump assembly
Air extraction in tube furnace, makes in tube furnace air pressure lower than the vacuum state of 30 Pa；
(5) it is passed through nitrogen into tube furnace to normal pressure, opens exhaust valve, is 70 ~ 80 with gas flowmeter control gas flow
ML/min is continually fed into nitrogen；
(6) so that temperature in pipe is risen to 600 DEG C with 3 DEG C/min heating rate, keep the temperature 2h.Made in pipe with 2 DEG C/min heating rate
Temperature rises to 800 DEG C, keeps the temperature 2h；
(7) so that tubular type in-furnace temperature is down to room temperature with 3 DEG C/min rate of temperature fall after step (6), take out sample；
(8) carbon material prepared in step (8) is placed in grind into powder in corundum mortar；
(9) carbon material obtained by step (9) is placed in Buchner funnel, wash with distilled water to PH=7；
(10) carbon material obtained by step (9) is moved into glass culture dish, is placed in 100 DEG C of the dry 8h of drying box, can be obtained can
Potato-based porous carbon materials for electrode material for super capacitor.
Embodiment 2:
(1) wash with distilled water, the small cube of 1.1 cm of side length will be cut into after peeling potatoes；
(2) 35min will be impregnated in the KOH solution for 1.0 mol/L that gained potato ball is transferred to 100 mL in step (1)；
(3) soaked potato ball is placed in glass culture dish, moves into dry 8-12h in 100 DEG C of drying boxes；
(4) dried potato ball is transferred in crucible, is placed in tube furnace, it will be in tube furnace with vacuum pump assembly
Air extraction, makes in tube furnace air pressure lower than the vacuum state of 30 Pa；
(5) it is passed through nitrogen into tube furnace to normal pressure, opens exhaust valve, is 70 ~ 80 with gas flowmeter control gas flow
ML/min is continually fed into nitrogen；
(6) so that temperature in pipe is risen to 600 DEG C with 3 DEG C/min heating rate, keep the temperature 2 hours.Make pipe with 2 DEG C/min heating rate
Interior temperature rises to 800 DEG C, keeps the temperature 2h；
(7) so that tubular type in-furnace temperature is down to room temperature with 3 DEG C/min rate of temperature fall after step (6), take out sample；
(8) carbon material prepared in step (7) is placed in grind into powder in corundum mortar；
(9) carbon material obtained by step (8) is placed in Buchner funnel, wash with distilled water to PH=7；
(10) carbon material obtained by step (9) is moved into glass culture dish, is placed in 100 DEG C of the dry 8h of drying box, can be obtained can
Potato-based porous carbon materials for electrode material for super capacitor.
Embodiment 3:
(1) wash with distilled water, the small cube of 1.1 cm of side length will be cut into after peeling potatoes；
(2) it takes in the KOH solution for 1.5 mol/L that gained potato ball is transferred to 100 mL in step (1) and impregnates 35min；
(3) soaked potato ball is placed in glass culture dish, moves into dry 8-12h in 100 DEG C of drying boxes；
(4) dried potato ball is transferred in crucible, is placed in tube furnace, it will be in tube furnace with vacuum pump assembly
Air extraction, makes in tube furnace air pressure lower than the vacuum state of 30 Pa；
(5) it is passed through nitrogen into tube furnace to normal pressure, opens exhaust valve, is 70 ~ 80 with gas flowmeter control gas flow
ML/min is continually fed into nitrogen；
(6) so that temperature in pipe is risen to 600 DEG C with 3 DEG C/min heating rate, keep the temperature 2h.Made in pipe with 2 DEG C/min heating rate
Temperature rises to 800 DEG C, keeps the temperature 2h；
(7) so that tubular type in-furnace temperature is down to room temperature with 3 DEG C/min rate of temperature fall after step (6), take out sample；
(8) carbon material prepared in step (7) is placed in grind into powder in corundum mortar；
(9) the ground carbon material of step (8) is placed in Buchner funnel, wash with distilled water to PH=7；
(10) carbon material obtained by step (9) is moved into glass culture dish, is placed in 100 DEG C of the dry 8h of drying box, can be obtained can
Potato-based porous carbon materials for electrode material for super capacitor.
Embodiment 4:
(1) wash with distilled water, the small cube of 1.1 cm of side length will be cut into after peeling potatoes；
(2) it takes in the KOH solution for 1.0 mol/L that gained potato ball is transferred to 100 mL in step (1) and impregnates 2 h；
(3) it takes the soaked potato ball of step to be placed in glass culture dish, moves into dry 8-12 h in 100 DEG C of drying boxes；
(4) dried potato ball is transferred in crucible, is placed in tube furnace, it will be in tube furnace with vacuum pump assembly
Air extraction, makes in tube furnace air pressure lower than the vacuum state of 30 Pa；
(5) it is passed through nitrogen into tube furnace to normal pressure, opens exhaust valve, is 70 ~ 80 with gas flowmeter control gas flow
ML/min is continually fed into nitrogen；
(6) so that temperature in pipe is risen to 600 DEG C with 3 DEG C/min heating rate, keep the temperature 2h.Made in pipe with 2 DEG C/min heating rate
Temperature rises to 800 DEG C, keeps the temperature 2h；
(7) so that tubular type in-furnace temperature is down to room temperature with 3 DEG C/min rate of temperature fall after step (6), take out sample；
(8) carbon material prepared in step (7) is placed in grind into powder in corundum mortar；
(9) the ground carbon material of step (8) is placed in Buchner funnel, wash with distilled water to PH=7；
(10) carbon material obtained by step (9) is moved into glass culture dish, is placed in 100 DEG C of the dry 8h of drying box, can be obtained can
Potato-based porous carbon materials for electrode material for super capacitor.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. being used for the potato-based porous carbon preparation method for material of electrode material for super capacitor, it is characterised in that: by potato
Stripping and slicing after peeling, with 100 DEG C of dryings after the h of 10 min ~ 4 are impregnated in the KOH solution of 0.5 ~ 1.5 mol/L, through carbonization and chemistry
It activates latter step and porous carbon materials for electrode material for super capacitor is made, the specific steps are that:
(1) it wash with distilled water, will dice after peeling potatoes；
(2) gained bell potato wedge in step (1) is transferred in KOH solution and impregnates the h of 10 min ~ 4；
(3) soaked potato ball is placed in glass culture dish, is moved into dry in 100 DEG C of drying boxes；
(4) dried potato ball is transferred in crucible, is placed in tube furnace, it will be in tube furnace with vacuum pump assembly
Air extraction, makes in tube furnace air pressure lower than the vacuum state of 30 Pa；
(5) be passed through inert gas into tube furnace to normal pressure, open exhaust valve, with gas flowmeter control gas flow rate be 70 ~
80 mL/min, are continually fed into inert gas；
(6) so that temperature in pipe is risen to 600 DEG C with 3 DEG C/min heating rate, keep the temperature 2 h；
So that temperature in pipe is risen to 800 DEG C with 2 DEG C/min heating rate, keeps the temperature 2 h；
(7) so that tubular type in-furnace temperature is down to room temperature with 3 DEG C/min rate of temperature fall after step (6), take out sample；
(8) carbon material prepared in step (7) is placed in grind into powder in corundum mortar；
(9) the ground carbon material of step (9) is placed in Buchner funnel, wash with distilled water to neutral；
(10) carbon material obtained by step (9) is moved into glass culture dish, is placed in drying box drying, can be obtained and can be used for super electricity
The potato-based porous carbon materials of container electrode material.
2. the potato-based porous carbon preparation method for material according to claim 1 for electrode material for super capacitor,
It is characterized by: raw material is the cube for 1.1 cm of side length that the potato after peeling is cut into.
3. the potato-based porous carbon preparation method for material according to claim 1 for electrode material for super capacitor,
It is characterized by: potato ball is impregnated with the KOH solution of 0.5 ~ 1.5 mol/L of 100 mL in step (2).
4. the potato-based porous carbon preparation method for material according to claim 1 for electrode material for super capacitor,
It is characterized by: potato ball dry 8 ~ 12 h of 100 DEG C of drying boxes in step (3).
5. the potato-based porous carbon preparation method for material according to claim 1 for electrode material for super capacitor,
It is characterized by: described vacuum pump assembly is two-stage lobe pump+liquid rotary pump.
6. the potato-based porous carbon preparation method for material according to claim 1 for electrode material for super capacitor,
It is characterized by: described inert gas is nitrogen.
7. the preparation side of the potato-based porous carbon materials according to claim 1 for electrode material for super capacitor
Method, it is characterised in that: sample obtained by step (9) is wash with distilled water to pH=7,100 DEG C of 8 h of drying.
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Cited By (1)
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| CN113267547A (en) * | 2021-05-20 | 2021-08-17 | 河南工业大学 | Preparation method of nickel-zinc-based metal organic framework material with biomass charcoal as carbon source |
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