CN104779077A - Straw-based electrode material with high mechanical stability and preparation method of electrode material - Google Patents
Straw-based electrode material with high mechanical stability and preparation method of electrode material Download PDFInfo
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- CN104779077A CN104779077A CN201510157585.2A CN201510157585A CN104779077A CN 104779077 A CN104779077 A CN 104779077A CN 201510157585 A CN201510157585 A CN 201510157585A CN 104779077 A CN104779077 A CN 104779077A
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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
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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
-
- 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
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
-
- 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
- H01G11/38—Carbon pastes or blends; Binders or additives therein
-
- 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 straw-based electrode material with high mechanical stability. The straw-based electrode material is characterized by being prepared from raw materials in parts by weight as follows: 100-120 parts of a modified straw composite material, 2-3 parts of montmorillonite powder, 1-2 parts of polypropylene oxide, 1-2 parts of carboxymethylcellulose, 1-2 parts of stearic acid, 3-4 parts of ferric nitrate, 2-3 parts of manganese dioxide, 1-2 parts of 3,4-ethylenedioxy thiophene and an appropriate amount of deionized water. Through carbonization, activation and doping modification of crop straw, carbon with high activity and the high specific surface area is prepared; by the aid of an ionic conductive polymer, the electric conductivity is enhanced, and the mechanical stability of the material is improved; the electrode material has excellent electrochemical performance, can realize quick charge and discharge and is long in service life, wide in working temperature range, green and pollution-free.
Description
Technical field
The present invention relates to chemical energy source Material Field, straw base electrode material that particularly a kind of mechanical stability is high and preparation method thereof.
Background technology
Ultracapacitor is a kind of novel energy storage device grown up the 1970s and 1980s in last century.It is a kind of between traditional capacitor and battery, there is the power supply of property.The outstanding advantages of ultracapacitor is that power density is high, the discharge and recharge time is short, have extended cycle life, operating temperature range is wide.The energy density of raising ultracapacitor and power density are the pursuits of the mankind always.The present invention selects straw as charcoal source, stalk is utilized to have natural string structure, by carbonizing it, the steps such as activation have prepared active carbon, it is relatively little that general active carbon has ratio capacitance, the shortcomings such as the not high and mechanical stability of energy density is not high, the Ionic conductivity polymer that the present invention adds, there is certain mobility, the small molecular ion contained in polymer is under electric field action, make directed diffusion motion to a certain degree therein, thus there is conductivity, wherein the mechanical strength of polymer is large, so the Ionic conductivity polymer added and active carbon synergy, prepare the electrode material with high mechanical stability.
Summary of the invention
The object of this invention is to provide high straw base electrode material of a kind of mechanical stability and preparation method thereof.
In order to realize object of the present invention, the present invention is by following scheme implementation:
The straw base electrode material that a kind of mechanical stability is high, be made up of the raw material of following weight portion: modified straw composite material 100-120, montmorillonite powder 2-3, PPOX 1-2, carboxymethyl cellulose 1-2, stearic acid 1-2, ferric nitrate 3-4, manganese dioxide 2-3,3,4-ethylene dioxythiophene 1-2, deionized water are appropriate;
Described modified straw composite material is made up of the raw material of following weight portion: stalk 100-120, dilute hydrochloric acid solution 30-50, zinc chloride 30-50, methyl triethoxysilane 1-2, manganese titanate 1-2, conductive black 2-4, Graphene 2-4, calcined kaolin 15-25, potassium peroxydisulfate 0.5-0.8, ultra-fine fibre glass 0.5-1; Preparation method is that powder of straw is broken into 8-20 order by (1), under 100-120 ° C is dried to constant weight after cleaning up with water; (2) by stalk with 60% zinc chloride mix according to the proportioning of 1:2-3, stir, flood and put into Muffle furnace after 24 hours, at 600-700 ° of C temperature, activate 1 hour, then through washing, filter, that drying obtains active carbon is for subsequent use; (3) be added in dilute hydrochloric acid solution by calcined kaolin and active carbon, under room temperature, soak 8-12 hour, filter, solid is washed with distilled water to neutrality, and filtrate detects without chloride ion, grinds 200-300 mesh sieve after vacuumize; (4) product of step (3) and distilled water are mixed according to the ratio of powder weight: 0.1:30-50, be heated to 40-50 ° of C, add potassium peroxydisulfate, methyl triethoxysilane, stir, add all the other surplus materials again and stir 3-5 hour, through suction filtration, dry obtained modified straw composite material after reaction terminates.
The straw base electrode material that a kind of mechanical stability of the present invention is high, be made up of following concrete step: by carboxymethyl cellulose, stearic acid is added in deionized water, high-speed stirred forms the liquid of thickness, add load weighted montmorillonite powder again, PPOX, ferric nitrate, manganese dioxide, 3, 4-ethylenedioxy thiophene fully stirs 0.5-1 hour, add the first high-speed stirred 1-2 hour of modified straw composite material again, transfer to low speed grinding in rubber mill again and obtain 200-400 object slurry, again slurry is coated with on a current collector uniformly, vacuumize 8-12 hour under temperature 100-110 ° of C, under the pressure of 10MPa, compressing tablet is carried out after taking-up, dry to constant weight under again putting into vacuum drying chamber 90-100 ° of C temperature after cutting.
Advantage of the present invention is: the present invention is by carbonizing crop material, activating and doping vario-property, prepare the charcoal of high activity, high-specific surface area, the Ionic conductivity polymer added, enhance conductivity, improve the mechanical stability of material, electrode material of the present invention has good chemical property, can fast charging and discharging, the life-span is long, operating temperature range is wide, green non-pollution.
specific embodiments
Below by instantiation, the present invention is described in detail.
The straw base electrode material that a kind of mechanical stability is high, be made up of the raw material of following weight portion (kilogram): modified straw composite material 100, montmorillonite powder 2, PPOX 2, carboxymethyl cellulose 1, stearic acid 2, ferric nitrate 3, manganese dioxide 2,3,4-ethylene dioxythiophene 1, deionized water are appropriate;
Described modified straw composite material is made up of the raw material of following weight portion (kilogram): stalk 100, dilute hydrochloric acid solution 39, zinc chloride 35, methyl triethoxysilane 1, manganese titanate 2, conductive black 4, Graphene 3, calcined kaolin 20, potassium peroxydisulfate 0.7, ultra-fine fibre glass 0.8; Preparation method is that powder of straw is broken into 8-20 order by (1), under 100-120 ° C is dried to constant weight after cleaning up with water; (2) by stalk with 60% zinc chloride mix according to the proportioning of 1:2-3, stir, flood and put into Muffle furnace after 24 hours, at 600-700 ° of C temperature, activate 1 hour, then through washing, filter, that drying obtains active carbon is for subsequent use; (3) be added in dilute hydrochloric acid solution by calcined kaolin and active carbon, under room temperature, soak 8-12 hour, filter, solid is washed with distilled water to neutrality, and filtrate detects without chloride ion, grinds 200-300 mesh sieve after vacuumize; (4) product of step (3) and distilled water are mixed according to the ratio of powder weight: 0.1:30-50, be heated to 40-50 ° of C, add potassium peroxydisulfate, methyl triethoxysilane, stir, add all the other surplus materials again and stir 3-5 hour, through suction filtration, dry obtained modified straw composite material after reaction terminates.
The straw base electrode material that a kind of mechanical stability of the present invention is high, be made up of following concrete step: by carboxymethyl cellulose, stearic acid is added in deionized water, high-speed stirred forms the liquid of thickness, add load weighted montmorillonite powder again, PPOX, ferric nitrate, manganese dioxide, 3, 4-ethylenedioxy thiophene fully stirs 0.5-1 hour, add the first high-speed stirred 1-2 hour of modified straw composite material again, transfer to low speed grinding in rubber mill again and obtain 200-400 object slurry, again slurry is coated with on a current collector uniformly, vacuumize 8-12 hour under temperature 100-110 ° of C, under the pressure of 10MPa, compressing tablet is carried out after taking-up, dry to constant weight under again putting into vacuum drying chamber 90-100 ° of C temperature after cutting.
With the electrode prepared in described embodiment for work electrode, aluminium foil is collector electrode, polytetrafluoroethylene is barrier film, the acetonitrile solution of 1.0M triethyl methyl ammonium tetrafluoroborate is electrolyte, in the scope of 1.2-2.5V, under constant current (5mA), carry out loop test, capacity: 1.69F, internal resistance: 1.5 Ω m, circulation volume conservation rate (%): 98.1.
Claims (2)
1. the straw base electrode material that a mechanical stability is high, it is characterized in that, be made up of the raw material of following weight portion: modified straw composite material 100-120, montmorillonite powder 2-3, PPOX 1-2, carboxymethyl cellulose 1-2, stearic acid 1-2, ferric nitrate 3-4, manganese dioxide 2-3,3,4-ethylene dioxythiophene 1-2, deionized water are appropriate;
Described modified straw composite material is made up of the raw material of following weight portion: stalk 100-120, dilute hydrochloric acid solution 30-50, zinc chloride 30-50, methyl triethoxysilane 1-2, manganese titanate 1-2, conductive black 2-4, Graphene 2-4, calcined kaolin 15-25, potassium peroxydisulfate 0.5-0.8, ultra-fine fibre glass 0.5-1; Preparation method is that powder of straw is broken into 8-20 order by (1), under 100-120 ° C is dried to constant weight after cleaning up with water; (2) by stalk with 60% zinc chloride mix according to the proportioning of 1:2-3, stir, flood and put into Muffle furnace after 24 hours, at 600-700 ° of C temperature, activate 1 hour, then through washing, filter, that drying obtains active carbon is for subsequent use; (3) be added in dilute hydrochloric acid solution by calcined kaolin and active carbon, under room temperature, soak 8-12 hour, filter, solid is washed with distilled water to neutrality, and filtrate detects without chloride ion, grinds 200-300 mesh sieve after vacuumize; (4) product of step (3) and distilled water are mixed according to the ratio of powder weight: 0.1:30-50, be heated to 40-50 ° of C, add potassium peroxydisulfate, methyl triethoxysilane, stir, add all the other surplus materials again and stir 3-5 hour, through suction filtration, dry obtained modified straw composite material after reaction terminates.
2. the straw base electrode material that a kind of mechanical stability is high according to claim 1, it is characterized in that, be made up of following concrete step: by carboxymethyl cellulose, stearic acid is added in deionized water, high-speed stirred forms the liquid of thickness, add load weighted montmorillonite powder again, PPOX, ferric nitrate, manganese dioxide, 3, 4-ethylenedioxy thiophene fully stirs 0.5-1 hour, add the first high-speed stirred 1-2 hour of modified straw composite material again, transfer to low speed grinding in rubber mill again and obtain 200-400 object slurry, again slurry is coated with on a current collector uniformly, vacuumize 8-12 hour under temperature 100-110 ° of C, under the pressure of 10MPa, compressing tablet is carried out after taking-up, dry to constant weight under again putting into vacuum drying chamber 90-100 ° of C temperature after cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157585.2A CN104779077A (en) | 2015-04-03 | 2015-04-03 | Straw-based electrode material with high mechanical stability and preparation method of electrode material |
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| CN201510157585.2A CN104779077A (en) | 2015-04-03 | 2015-04-03 | Straw-based electrode material with high mechanical stability and preparation method of electrode material |
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| CN201510157585.2A Pending CN104779077A (en) | 2015-04-03 | 2015-04-03 | Straw-based electrode material with high mechanical stability and preparation method of electrode material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204430A (en) * | 2017-07-06 | 2017-09-26 | 新沂市中诺新材料科技有限公司 | A kind of method that utilization wheat stalk prepares sodium ion battery electrode material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651484A (en) * | 2012-05-10 | 2012-08-29 | 中国第一汽车股份有限公司 | Energy storage device combining with characteristics of lithium ion battery and super-capacitor |
| CN102786052A (en) * | 2012-07-16 | 2012-11-21 | 太仓市联林活性炭厂 | Method for preparation of activated carbon through rice hull desilication |
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2015
- 2015-04-03 CN CN201510157585.2A patent/CN104779077A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651484A (en) * | 2012-05-10 | 2012-08-29 | 中国第一汽车股份有限公司 | Energy storage device combining with characteristics of lithium ion battery and super-capacitor |
| CN102786052A (en) * | 2012-07-16 | 2012-11-21 | 太仓市联林活性炭厂 | Method for preparation of activated carbon through rice hull desilication |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204430A (en) * | 2017-07-06 | 2017-09-26 | 新沂市中诺新材料科技有限公司 | A kind of method that utilization wheat stalk prepares sodium ion battery electrode material |
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Application publication date: 20150715 |
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