CN101950683A - Preparation method of semi-spherical active carbon electrode material of super capacitor - Google Patents
Preparation method of semi-spherical active carbon electrode material of super capacitor Download PDFInfo
- Publication number
- CN101950683A CN101950683A CN 201010277238 CN201010277238A CN101950683A CN 101950683 A CN101950683 A CN 101950683A CN 201010277238 CN201010277238 CN 201010277238 CN 201010277238 A CN201010277238 A CN 201010277238A CN 101950683 A CN101950683 A CN 101950683A
- Authority
- CN
- China
- Prior art keywords
- active carbon
- preparation
- electrode material
- semi
- carbon electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to a preparation method of a semi-spherical active carbon electrode material of a super capacitor, which comprises the steps of: 1, dissolving glucose into deionized water, adding a foaming agent, after completely dissolving and fully mixing, transferring to a high-pressure kettle, and hydrothermally reacting at a temperature of 90-160 DEG C for 5-9h, wherein the mass ratio of the glucose to the foaming agent is 10:1-5; and washing a product, filtering and drying for carbonizing at a temperature of 700-850 DEG C for 3-5h under the protection of a reducing atmosphere, naturally cooling and then grinding to obtain semi-spherical active carbon. The invention has the advantages of simple steps, mild reaction conditions, increased pore diameter of the semi-spherical active carbon material, improved migration property of electrolyte ions and capability of effectively improving the power density of the super capacitor.
Description
Technical field
The present invention relates to a kind of preparation method of electrode material, relate in particular to the preparation method of the hemispherical active carbon electrode material of a kind of ultracapacitor.
Background technology
Ultracapacitor is a kind of novel energy-storing element between battery and traditional capacitor, characteristics such as have big capacity, high power density and have extended cycle life.All have a wide range of applications in fields such as electric automobile, consumer electronics, electricity power, communications and transportation and Aero-Space.
Absorbent charcoal material is the core material of carbon back ultracapacitor.Its energy storage mechanism is in the electric double layer that forms between electrode and electrolyte interface of Charge Storage, relies on the electrostatic charge storage power.Active carbon mainly is its porosity characteristic as the capacitor electrode material foundation, and structure of activated carbon comprises macropore, mesopore and microcellular structure.Owing to the restriction in aperture, electrolyte diffusion and electrolytical migration rate are not high in mesopore and microcellular structure, and the power that discharges and recharges that therefore can limit ultracapacitor is power density.For a lot of applications, requirement can be finished the super-large current fast charging and discharging moment, and in this case, existing absorbent charcoal material also is difficult to satisfy this requirement.
Summary of the invention
The object of the present invention is to provide the preparation method of the hemispherical active carbon electrode material of a kind of ultracapacitor, this hemispherical active carbon electrode material can effectively improve the power density of ultracapacitor.
The present invention is achieved like this; it is characterized in that method step is: earlier glucose is dissolved in the deionized water; add blowing agent again, the mass ratio of glucose and blowing agent is 10: 1-5, treat whole dissolvings, fully be transferred in the autoclave after the mixing; under 90-160 ℃ of hydrothermal condition, react; reaction time is 5-9h, with product washing, filter, dry back under protection of reducing atmosphere 700-850 ℃ carry out carbonization, carbonization time 3-5h; naturally grind cooling cooling back, obtains hemispherical active carbon.
Described blowing agent is lauryl sodium sulfate, sodium acid carbonate or sodium sulfate of polyethenoxy ether of fatty alcohol.
Advantage of the present invention is: method step is simple, the reaction condition gentleness, and the migration performance of electrolyte ion is improved in the aperture that increases hemispherical absorbent charcoal material, can effectively improve the power density of ultracapacitor.
Description of drawings
Fig. 1 is the hemispherical active carbon SEM of embodiment 1 a gained photo.
Fig. 2 for the hemispherical activated carbon electrodes of embodiment 1 gained sweep speed be 100 and 50mv/s under cyclic voltammetry curve.
Fig. 3 is 10,20 and 50mA/cm for the hemispherical activated carbon electrodes of embodiment 1 gained in current density
2Under the constant current charge-discharge curve.
Fig. 4 is the hemispherical activated carbon electrodes cyclic voltammetric of embodiment 2 a gained test curve.
Fig. 5 is the hemispherical activated carbon electrodes charging and discharging curves of embodiment 2 gained.
Embodiment
Embodiment 1
The preparation of hemispherical active carbon: earlier 10 glucose are dissolved in the deionized water, add blowing agent lauryl sodium sulfate 1g again, treat all to be transferred in the autoclave after the dissolving, under 100 ℃ of hydrothermal conditions, react 7h.With product washing, filtration, dry back in the following 700 ℃ of carbonization 3h of protection of reducing atmosphere.Naturally grind cooling cooling back, obtains hemispherical active carbon.Fig. 1 is the SEM photo of this sample, as can be seen from Figure 1 tangible hemispherical structure.The hemispherical active carbon specific area that this method is prepared is 911.21m
2/ g.
The preparation of activated carbon electrodes: it is even that active carbon, carbon black and ptfe emulsion are pressed 65: 30: 5 mixed of mass ratio, the furnishing pulpous state, and evenly be coated on the nickel foam, with 15MPa pressure tablet forming, again electrode slice is put into 120 ℃ of vacuum drying chamber vacuumizes 24 hours with powder compressing machine.With the saturated calomel electrode is reference electrode, is to electrode with 2 * 2cm platinized platinum electrode, and electrolyte is 2M KOH solution, carries out the cyclic voltammetric and the constant current charge-discharge characteristic test of activated carbon electrodes at German IM6ex electrochemical workstation.As can be seen from Figure 2, cyclic voltammetric this sample of when test is in the scope interscan of voltage-0.9~0.5V, and presents reasonable rectangle, and when sweep speed was 100mv/s, the speed of response of electrode was very fast.Fig. 3 is the discharge curve of this electrode under different current densities, with 100mA/cm
2During the constant current charge-discharge test, the specific volume of sample reaches 287.89F/g.
Embodiment 2
The preparation of hemispherical active carbon: earlier glucose is dissolved in the deionized water, adds blowing agent sodium acid carbonate 1g again, treat all to be transferred in the autoclave after the dissolving, under 160 ℃ of hydrothermal conditions, react 9h.With product washing, filtration, dry back in the following 850 ℃ of carbonization 3h of protection of reducing atmosphere.Naturally grind cooling cooling back, obtains hemispherical active carbon.The hemispherical active carbon specific area that this method is prepared is 851.75m
2/ g.
The preparation of activated carbon electrodes: it is even that active carbon, carbon black and ptfe emulsion are pressed 65: 30: 5 mixed of mass ratio, the furnishing pulpous state, and evenly be coated on the nickel foam, with 15MPa pressure tablet forming, again electrode slice is put into 120 ℃ of vacuum drying chamber vacuumizes 24 hours with powder compressing machine.With the saturated calomel electrode is reference electrode, is to electrode with 2 * 2cm platinized platinum electrode, and electrolyte is 2M KOH solution, carries out the cyclic voltammetric and the constant current charge-discharge characteristic test of activated carbon electrodes at German IM6ex electrochemical workstation.This sample under the sweep speed of 50mV/s, cyclic voltammetry curve as shown in Figure 4, the power response characteristic of electrode is relatively good.Fig. 5 is this sample electrode constant current charge-discharge test curve, presents relatively good voltage response curves.Electric current is 20mA/cm
2The time, specific volume reaches 267.83F/g.
Claims (2)
1. the preparation method of the hemispherical active carbon electrode material of ultracapacitor; it is characterized in that method step is: earlier glucose is dissolved in the deionized water; add blowing agent again; the mass ratio of glucose and blowing agent is 10: 1-5; treat whole dissolvings, fully be transferred in the autoclave after the mixing; under 90-160 ℃ of hydrothermal condition, react; reaction time is 5-9h; with product washing, filter, dry back under protection of reducing atmosphere 700-850 ℃ carry out carbonization; carbonization time 3-5h; naturally grind cooling cooling back, obtains hemispherical active carbon.
2. the preparation method of the hemispherical active carbon electrode material of ultracapacitor according to claim 1 is characterized in that blowing agent is lauryl sodium sulfate, sodium acid carbonate or sodium sulfate of polyethenoxy ether of fatty alcohol.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102772380A CN101950683B (en) | 2010-09-09 | 2010-09-09 | Preparation method of semi-spherical active carbon electrode material of super capacitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102772380A CN101950683B (en) | 2010-09-09 | 2010-09-09 | Preparation method of semi-spherical active carbon electrode material of super capacitor |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101950683A true CN101950683A (en) | 2011-01-19 |
CN101950683B CN101950683B (en) | 2012-07-11 |
Family
ID=43454131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010102772380A Expired - Fee Related CN101950683B (en) | 2010-09-09 | 2010-09-09 | Preparation method of semi-spherical active carbon electrode material of super capacitor |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101950683B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105000544A (en) * | 2015-06-24 | 2015-10-28 | 奇瑞汽车股份有限公司 | Preparation method for high-conductivity porous carbon material used for supercapacitor |
CN109887763A (en) * | 2019-01-24 | 2019-06-14 | 暨南大学 | A kind of multiple micro nano structure carbon material and preparation method having conductive energy storage effect |
CN112374496A (en) * | 2020-11-20 | 2021-02-19 | 嘉兴学院 | Preparation method of biomass porous carbon material based on novel iodine simple substance pore-forming agent and electrochemical energy storage application of biomass porous carbon material |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1872674A (en) * | 2006-06-09 | 2006-12-06 | 江西财经大学 | Method for preparing active mesopore carbon with high specific surface area in use for electrochemical capacitor |
WO2007114849A2 (en) * | 2005-11-04 | 2007-10-11 | Meadwestvaco Corporation | Activated carbon from carbohydrate |
KR20080043623A (en) * | 2006-11-14 | 2008-05-19 | 재단법인 포항산업과학연구원 | Preparation method of meso porous activated carbon for supercapacitor electrode |
US20080257721A1 (en) * | 1999-04-30 | 2008-10-23 | Acep, Inc. | Electrode materials with high surface conductivity |
CN101299397A (en) * | 2008-03-21 | 2008-11-05 | 中国科学院上海硅酸盐研究所 | Stephanoporate carbon electrode material and preparation method thereof |
CN101525132A (en) * | 2009-04-15 | 2009-09-09 | 广西师范大学 | Active carbon for super capacitor and a preparation method thereof |
CN101531358A (en) * | 2009-04-28 | 2009-09-16 | 湖南理工学院 | Method for preparing porous carbon electrode material used for super capacitor |
-
2010
- 2010-09-09 CN CN2010102772380A patent/CN101950683B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080257721A1 (en) * | 1999-04-30 | 2008-10-23 | Acep, Inc. | Electrode materials with high surface conductivity |
WO2007114849A2 (en) * | 2005-11-04 | 2007-10-11 | Meadwestvaco Corporation | Activated carbon from carbohydrate |
CN1872674A (en) * | 2006-06-09 | 2006-12-06 | 江西财经大学 | Method for preparing active mesopore carbon with high specific surface area in use for electrochemical capacitor |
KR20080043623A (en) * | 2006-11-14 | 2008-05-19 | 재단법인 포항산업과학연구원 | Preparation method of meso porous activated carbon for supercapacitor electrode |
CN101299397A (en) * | 2008-03-21 | 2008-11-05 | 中国科学院上海硅酸盐研究所 | Stephanoporate carbon electrode material and preparation method thereof |
CN101525132A (en) * | 2009-04-15 | 2009-09-09 | 广西师范大学 | Active carbon for super capacitor and a preparation method thereof |
CN101531358A (en) * | 2009-04-28 | 2009-09-16 | 湖南理工学院 | Method for preparing porous carbon electrode material used for super capacitor |
Non-Patent Citations (1)
Title |
---|
《功能材料》 20070430 邓梅根等 活性炭的孔结构与其电容特性的关系研究 全文 1-2 第38卷, 第4期 2 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105000544A (en) * | 2015-06-24 | 2015-10-28 | 奇瑞汽车股份有限公司 | Preparation method for high-conductivity porous carbon material used for supercapacitor |
CN109887763A (en) * | 2019-01-24 | 2019-06-14 | 暨南大学 | A kind of multiple micro nano structure carbon material and preparation method having conductive energy storage effect |
CN109887763B (en) * | 2019-01-24 | 2021-02-05 | 暨南大学 | Multiple micro-nano structure carbon material with conductive energy storage function and preparation method thereof |
CN112374496A (en) * | 2020-11-20 | 2021-02-19 | 嘉兴学院 | Preparation method of biomass porous carbon material based on novel iodine simple substance pore-forming agent and electrochemical energy storage application of biomass porous carbon material |
CN112374496B (en) * | 2020-11-20 | 2022-05-24 | 嘉兴学院 | Preparation method of biomass porous carbon material based on iodine simple substance pore-forming agent and electrochemical energy storage application of biomass porous carbon material |
Also Published As
Publication number | Publication date |
---|---|
CN101950683B (en) | 2012-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102683037B (en) | Manganese dioxide asymmetric super-capacitor and preparation method thereof | |
CN103871756B (en) | A kind of preparation method of sub-micron porous charcoal ball | |
CN105374571B (en) | Lithium-ion capacitor negative plate and preparation method thereof, winding type lithium ion capacitor | |
CN101894682B (en) | High-energy ultracapacitor | |
CN101165828A (en) | Buckle type electrochemical capacitor and its manufacture method | |
CN105152170A (en) | Preparation method for cicada slough based porous carbon material used for electrochemical capacitor | |
CN101281822B (en) | Inorganic mixed type lithium ion super capacitor | |
CN106057477A (en) | Water system rechargeable sodion capacitor battery and preparation method thereof | |
CN106373788A (en) | Lithium ion super capacitor pre-embedded lithium pole sheet manufacture method | |
CN105244178A (en) | Super capacitor and preparation method thereof | |
CN103426650A (en) | Asymmetric electrochemical supercapacitor on basis of rice-husk-based activated carbon materials | |
CN104003371A (en) | Method for preparing porous carbon material used for super capacitor through using cashmere wool as raw material | |
CN105788884A (en) | Preparation method of manganese dioxide/carbon paper composite electrode for super capacitor | |
CN104332323B (en) | A kind of porous electrode, preparation method and its application in terms of lithium-ion capacitor, ultracapacitor is prepared | |
US20110002085A1 (en) | Electrode for capacitor and electric double layer capacitor having the same | |
CN101950683B (en) | Preparation method of semi-spherical active carbon electrode material of super capacitor | |
Zihong et al. | Electrochemical performance of nickel hydroxide/activated carbon supercapacitors using a modified polyvinyl alcohol based alkaline polymer electrolyte | |
CN103887076A (en) | Water system asymmetric super capacitor and preparation method thereof | |
CN106006630A (en) | Method for preparing activated carbon materials | |
CN104766961B (en) | Preparation method of low-specific-surface-area carbon/carbon composite negative electrode material of sodium ion battery | |
CN103489663A (en) | Preparation method and application of supercapacitor based on ultrathin two-dimensional nickel hydroxide nano material | |
CN102800487B (en) | Electrode material of three-dimensional nanostructure for super capacitor and application thereof | |
CN104953121A (en) | Preparation method for lithium-ion capacitor battery by taking bioprotein-based nitrogen-doped porous carbon material as negative material | |
CN112103095B (en) | Preparation method of manganese dioxide-based composite material applied to supercapacitor and electrochemical performance testing method thereof | |
CN101651209B (en) | Preparation method of Ni-MH secondary battery anode |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20150909 |
|
EXPY | Termination of patent right or utility model |