CN105977043A - Supercapacitor electrode material added with modified lignite and preparation method thereof - Google Patents
Supercapacitor electrode material added with modified lignite and preparation method thereof Download PDFInfo
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- CN105977043A CN105977043A CN201610213875.9A CN201610213875A CN105977043A CN 105977043 A CN105977043 A CN 105977043A CN 201610213875 A CN201610213875 A CN 201610213875A CN 105977043 A CN105977043 A CN 105977043A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/24—Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- 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 invention discloses a supercapacitor electrode material added with modified lignite, which is prepared from the following raw materials in parts by weight: 60-63 parts of loofah, 37-40 parts of scaphium scaphigerum, an appropriate amount of distilled water, 39.5-40 parts of zinc chloride, 8-8.5 parts of lithium chloride, 4-5 parts of polyvinylpyrrolidone, 2-2.5 parts of chitosan, 10-12 parts of lignite, 9-10 parts of polytetrafluoroethylene emulsion, 4-5 parts of sodium hydroxide, an appropriate amount of hydrochloric acid with the concentration being 1wt%, 2-3 parts of molybdenum disulfide and 7-8 parts of acetylene black. According to the invention, the modified lignite material is added to mutually cooperate with a plant-based porous carbon material, so that the cycle performance and the capacitive performance of a supercapacitor can be improved. Meanwhile, waste materials are utilized, the cost is reduced, and economic utilization values of the supercapacitor electrode materials are improved. In addition, the supercapacitor electrode material is energy-saving, environment-friendly and reproducible, and is conducive to realization of industrialization.
Description
Technical field
The present invention relates to electrode material technical field, particularly relate to a kind of electrode material for super capacitor adding modified brown coal and preparation method thereof.
Background technology
The transition of fossil energy is relied on and consumes and causes serious environmental problem and energy crisis by the mankind, and for realizing the development and utilization of the energy of sustainable development, new forms of energy and the research of novel energy device cause extensive concern.Ultracapacitor is class novel energy-storing device between traditional capacitor and battery, and compared with tradition energy storage device, it has higher energy density and power density, longer service life cycle, advantages of environment protection simultaneously.Along with the development of science and technology in recent years, ultracapacitor is gradually increased in the application trend of the aspects such as crane, fork truck, new-energy automobile, common electronic facility and factory's stand-by power supply.But, the electric conductivity of super capacitor material is poor, be related to ultracapacitor key property as the uneven problem common with electrolyte contacts face unstable properties etc. of Topical Dispersion.Electrode is to determine ultracapacitor performance most critical factor, therefore the research of electrode material always this field academia and the focus of industrial quarters.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of electrode material for super capacitor adding modified brown coal and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of electrode material for super capacitor adding modified brown coal, is prepared by the raw materials in: Retinervus Luffae Fructus 60-63, Semen Sterculiae Lychnophorae 37-40, distilled water are appropriate, zinc chloride 39.5-40, lithium chloride 8-8.5, polyvinylpyrrolidone 4-5, chitosan 2-2.5, brown coal 10-12, ptfe emulsion 9-10, sodium hydroxide 4-5, concentration are that the hydrochloric acid solution of 1wt% is appropriate, molybdenum bisuphide 2-3, acetylene black 7-8.
According to the electrode material for super capacitor adding modified brown coal a kind of described in claims 1, following concrete grammar it is prepared from:
(1) by Retinervus Luffae Fructus under being passed through nitrogen protection, being warming up to 800 DEG C with the heating rate of 5 DEG C/min, insulation carbonization naturally cooled to room temperature after 1 hour, pulverized, and crossed 200 mesh sieves stand-by；Remove shell after Semen Sterculiae Lychnophorae is soaked in the distilled water of 5 times amount expansion and obtain Semen Sterculiae Lychnophorae suspension with crust, above-mentioned 200 mesh powder are added thereto, after stirring, add zinc chloride, lithium chloride, be spray-dried after ultrasonic 2 hours, obtain mixed-powder；
(2) mixed-powder is put in horizontal pipe furnace; under the protection being passed through nitrogen; it is incubated 2 hours at a temperature of 1000 DEG C; after being cooled to room temperature, product is put in the distilled water of 2 times amount and filter after ultrasonic 1.5 hours; the filter cake obtained is put in vacuum drying oven and dry, obtain plant base porous carbon material；
(3) brown coal are cleaned up post-drying; ground 200 mesh sieves; mix and add the distilled water of total amount 2 times amount with sodium hydroxide; stir and soak 12 hours after being uniformly dispersed; in the Muffle furnace of 800 DEG C, it is incubated 1 hour under nitrogen protection, is cooled to room temperature after taking-up, then continues to soak 12 hours with the hydrochloric acid solution that concentration is 1wt%; then dry under conditions of 120 DEG C, obtain modified brown coal material；
(4) polyvinylpyrrolidone is added in the water of 5 times amount, ptfe emulsion is added after being heated to being completely dissolved, it is stirring evenly and then adding into the plant base porous carbon material that step (2) obtains, the modified brown coal material that step (3) obtains, acetylene black and remaining residual components, after stirring 1.5 hours with the speed of 1000 revs/min, material is transferred in rubber mill, the slurry obtaining 400 mesh is ground with the speed of 200 revs/min, then slurry is coated with on a current collector uniformly, it is vacuum dried 6 hours under conditions of temperature 110-120 DEG C, on desktop electric tablet machine, under the pressure of 10MPa, tabletting is carried out after taking-up, dry to constant weight at a temperature of 80 DEG C and get final product in being placed again into vacuum drying oven after cutting.
The invention have the advantage that the present invention uses the plant component such as Retinervus Luffae Fructus, Semen Sterculiae Lychnophorae as carbon source, resource natural reproducible, reduce the dependence to fossil energy, and utilize zinc chloride and lithium chloride salt-mixture as activator, not only solve and utilize the shortcoming of perishable reaction vessel in activation of potassium hydroxide technique, and the plant base porous carbon material prepared has the distribution of optimized pore structure and hole dimension, has good chemical property, technique is simple simultaneously, and feasibility is high.
The present invention adds modified brown coal material and cooperates with plant base porous carbon material, cycle performance and the capacitive property of ultracapacitor can be improved, twice laid simultaneously, reduce cost, improve its economic use value, and energy-saving and environmental protection, renewable, the most industrialized realization.
Detailed description of the invention
A kind of electrode material for super capacitor adding modified brown coal, is made up of the raw material of following weight portion (kilogram): Retinervus Luffae Fructus 60, Semen Sterculiae Lychnophorae 37, distilled water are appropriate, zinc chloride 39.5, lithium chloride 8, polyvinylpyrrolidone 4, chitosan 2, brown coal 10, ptfe emulsion 9, sodium hydroxide 4, concentration are that the hydrochloric acid solution of 1wt% is appropriate, molybdenum bisuphide 2, acetylene black 7.
According to the electrode material for super capacitor adding modified brown coal a kind of described in claims 1, following concrete grammar it is prepared from:
(1) by Retinervus Luffae Fructus under being passed through nitrogen protection, being warming up to 800 DEG C with the heating rate of 5 DEG C/min, insulation carbonization naturally cooled to room temperature after 1 hour, pulverized, and crossed 200 mesh sieves stand-by；Remove shell after Semen Sterculiae Lychnophorae is soaked in the distilled water of 5 times amount expansion and obtain Semen Sterculiae Lychnophorae suspension with crust, above-mentioned 200 mesh powder are added thereto, after stirring, add zinc chloride, lithium chloride, be spray-dried after ultrasonic 2 hours, obtain mixed-powder；
(2) mixed-powder is put in horizontal pipe furnace; under the protection being passed through nitrogen; it is incubated 2 hours at a temperature of 1000 DEG C; after being cooled to room temperature, product is put in the distilled water of 2 times amount and filter after ultrasonic 1.5 hours; the filter cake obtained is put in vacuum drying oven and dry, obtain plant base porous carbon material；
(3) brown coal are cleaned up post-drying; ground 200 mesh sieves; mix and add the distilled water of total amount 2 times amount with sodium hydroxide; stir and soak 12 hours after being uniformly dispersed; in the Muffle furnace of 800 DEG C, it is incubated 1 hour under nitrogen protection, is cooled to room temperature after taking-up, then continues to soak 12 hours with the hydrochloric acid solution that concentration is 1wt%; then dry under conditions of 120 DEG C, obtain modified brown coal material；
(4) polyvinylpyrrolidone is added in the water of 5 times amount, ptfe emulsion is added after being heated to being completely dissolved, it is stirring evenly and then adding into the plant base porous carbon material that step (2) obtains, the modified brown coal material that step (3) obtains, acetylene black and remaining residual components, after stirring 1.5 hours with the speed of 1000 revs/min, material is transferred in rubber mill, the slurry obtaining 400 mesh is ground with the speed of 200 revs/min, then slurry is coated with on a current collector uniformly, it is vacuum dried 6 hours under conditions of temperature 110 DEG C, on desktop electric tablet machine, under the pressure of 10MPa, tabletting is carried out after taking-up, dry to constant weight at a temperature of 80 DEG C and get final product in being placed again into vacuum drying oven after cutting.
In described embodiment, the electrode of preparation is as working electrode, metallic nickel is colelctor electrode, politef is barrier film, with 2mol/L potassium hydroxide as electrolyte, in the range of 1.2-2.5V, under constant current (5mA), it is circulated test, at room temperature determines that its capacity is 1.69F by charging and discharging curve, internal resistance is 1.7m Ω, and circulation volume conservation rate is 98.6%.
Claims (2)
1. the electrode material for super capacitor adding modified brown coal, it is characterized in that, be prepared by the raw materials in: Retinervus Luffae Fructus 60-63, Semen Sterculiae Lychnophorae 37-40, distilled water are appropriate, zinc chloride 39.5-40, lithium chloride 8-8.5, polyvinylpyrrolidone 4-5, chitosan 2-2.5, brown coal 10-12, ptfe emulsion 9-10, sodium hydroxide 4-5, concentration are that the hydrochloric acid solution of 1wt% is appropriate, molybdenum bisuphide 2-3, acetylene black 7-8.
2. according to the electrode material for super capacitor adding modified brown coal a kind of described in claims 1, it is characterised in that be prepared from by following concrete grammar:
(1) by Retinervus Luffae Fructus under being passed through nitrogen protection, being warming up to 800 DEG C with the heating rate of 5 DEG C/min, insulation carbonization naturally cooled to room temperature after 1 hour, pulverized, and crossed 200 mesh sieves stand-by；Remove shell after Semen Sterculiae Lychnophorae is soaked in the distilled water of 5 times amount expansion and obtain Semen Sterculiae Lychnophorae suspension with crust, above-mentioned 200 mesh powder are added thereto, after stirring, add zinc chloride, lithium chloride, be spray-dried after ultrasonic 2 hours, obtain mixed-powder；
(2) mixed-powder is put in horizontal pipe furnace; under the protection being passed through nitrogen; it is incubated 2 hours at a temperature of 1000 DEG C; after being cooled to room temperature, product is put in the distilled water of 2 times amount and filter after ultrasonic 1.5 hours; the filter cake obtained is put in vacuum drying oven and dry, obtain plant base porous carbon material；
(3) brown coal are cleaned up post-drying; ground 200 mesh sieves; mix and add the distilled water of total amount 2 times amount with sodium hydroxide; stir and soak 12 hours after being uniformly dispersed; in the Muffle furnace of 800 DEG C, it is incubated 1 hour under nitrogen protection, is cooled to room temperature after taking-up, then continues to soak 12 hours with the hydrochloric acid solution that concentration is 1wt%; then dry under conditions of 120 DEG C, obtain modified brown coal material；
(4) polyvinylpyrrolidone is added in the water of 5 times amount, ptfe emulsion is added after being heated to being completely dissolved, it is stirring evenly and then adding into the plant base porous carbon material that step (2) obtains, the modified brown coal material that step (3) obtains, acetylene black and remaining residual components, after stirring 1.5 hours with the speed of 1000 revs/min, material is transferred in rubber mill, the slurry obtaining 400 mesh is ground with the speed of 200 revs/min, then slurry is coated with on a current collector uniformly, it is vacuum dried 6 hours under conditions of temperature 110-120 DEG C, on desktop electric tablet machine, under the pressure of 10MPa, tabletting is carried out after taking-up, dry to constant weight at a temperature of 80 DEG C and get final product in being placed again into vacuum drying oven after cutting.
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| CN201610213875.9A CN105977043A (en) | 2016-04-07 | 2016-04-07 | Supercapacitor electrode material added with modified lignite and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409523A (en) * | 2016-10-31 | 2017-02-15 | 安徽江威精密制造有限公司 | Electrostatic spinning composite electrode material with doped modified lithium manganate added thereto |
| CN106531455A (en) * | 2016-10-31 | 2017-03-22 | 安徽江威精密制造有限公司 | Composite electrode material with adding of polypyrrole compound rare earth modified barium nitrate |
| CN106531450A (en) * | 2016-10-31 | 2017-03-22 | 安徽江威精密制造有限公司 | Electrostatic spinning composite electrode material with added copper nitrate-modified active carbon |
| CN112158838A (en) * | 2020-10-25 | 2021-01-01 | 福州大学 | Preparation method of nitrogen-oxygen co-doped hierarchical porous carbon material |
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| CN104098083A (en) * | 2014-07-15 | 2014-10-15 | 黑龙江大学 | Method for preparing porous nano carbon materials with biomass serving as carbon source |
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| CN104098083A (en) * | 2014-07-15 | 2014-10-15 | 黑龙江大学 | Method for preparing porous nano carbon materials with biomass serving as carbon source |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409523A (en) * | 2016-10-31 | 2017-02-15 | 安徽江威精密制造有限公司 | Electrostatic spinning composite electrode material with doped modified lithium manganate added thereto |
| CN106531455A (en) * | 2016-10-31 | 2017-03-22 | 安徽江威精密制造有限公司 | Composite electrode material with adding of polypyrrole compound rare earth modified barium nitrate |
| CN106531450A (en) * | 2016-10-31 | 2017-03-22 | 安徽江威精密制造有限公司 | Electrostatic spinning composite electrode material with added copper nitrate-modified active carbon |
| CN112158838A (en) * | 2020-10-25 | 2021-01-01 | 福州大学 | Preparation method of nitrogen-oxygen co-doped hierarchical porous carbon material |
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Application publication date: 20160928 |