CN108269697A - The preparation method of polypyrrole/cobalt hydroxide composite electrode material for super capacitor - Google Patents
The preparation method of polypyrrole/cobalt hydroxide composite electrode material for super capacitor Download PDFInfo
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- CN108269697A CN108269697A CN201711413848.7A CN201711413848A CN108269697A CN 108269697 A CN108269697 A CN 108269697A CN 201711413848 A CN201711413848 A CN 201711413848A CN 108269697 A CN108269697 A CN 108269697A
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- electrode
- cobalt
- polypyrrole
- super capacitor
- electrode material
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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
- H01G11/48—Conductive polymers
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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
-
- 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 kind of preparation methods of polypyrrole/cobalt hydroxide composite electrode material for super capacitor.Pyrrole monomer is added in the aqueous solution for being 0.1 ~ 2M in concentration of cobalt ions, 2h is stirred at room temperature until pyrrole monomer is completely dissolved, electrolyte is made, 50mL electrolyte is taken to be placed in electrolytic cell, to be compacted carbon paper or graphene paper as working electrode and to electrode, saturated calomel electrode is reference electrode, three-electrode system is configured, cyclic voltammetry scan 100 ~ 10000 is carried out with the sweep speed of 5 ~ 2000mV/s to system between 1V ~ 1V to enclose, remove working electrode and to electrode, with deionized water soaked overnight to remove foreign ion, it is dried at 60 DEG C for 24 hours, obtain polypyrrole/cobalt hydroxide composite electrode material for super capacitor.The method of the present invention preparation process is simple and environmentally-friendly, reliable, and raw material sources are extensive, of low cost, is suitble to industrialized production.Obtained electrode material has both high conductivity and high capacitance.
Description
Technical field
The present invention relates to a kind of polypyrrole/cobalt hydroxide composite electrode material for super capacitor is prepared with electrochemical deposition
Method specifically, is related to a kind of preparation method of polypyrrole/cobalt hydroxide composite electrode material for super capacitor.
Background technology
Polypyrrole is as a kind of common conducting polymer, of low cost and with good since its preparation is simple
Environmental stability and unique physics and chemical property are typically used to ultracapacitor, battery, sensor and anti-corrosion neck
Domain has obtained the concern energetically of countries in the world researcher.Particularly there is the electric polypyrrole of nanostructured, due to its grain
The properties such as diameter is minimum, large specific surface area, the electron transfer rate that is exceedingly fast impart conductive nano polypyrrole material with conventional block
Many special performances not available for body.
Cobalt hydroxide is as a kind of electrode material of ultracapacitor, because being capable of providing fake capacitance, in alkaline electrolyte
The features such as middle specified vol is high, stability is good becomes the research hotspot of alkaline electrode material for super capacitor.Double hydrogen-oxygens of stratiform
Compound (Layered Double Hydroxide, abbreviation LDHs), has unique layer structure, is urged in chemical sensor, electricity
Change, in ultracapacitor, be all widely used research.（(a) Chen, J.; Xu, J.; Zhou, S.; Zhao, N.;
Wong, C. P., Amorphous nanostructured FeOOH and Co–Ni double hydroxides for
high-performance aqueous asymmetric supercapacitors. Nano Energy 2016, 21,
145-153; (b) Wang, L.; Feng, X.; Ren, L.; Piao, Q.; Zhong, J.; Wang, Y.; Li,
H.; Chen, Y.; Wang, B., Flexible Solid-State Supercapacitor Based on a Metal-
Organic Framework Interwoven by Electrochemically-Deposited PANI. Journal of
the American Chemical Society 2015, 137 (15).）
Although although cobalt hydroxide is more advantageous on capacity as electrode of super capacitor, general electrochemical window ratio
Relatively narrow and electric conductivity is poor.Polypyrrole can play the work widened electrochemical window and enhance electric conductivity among combination electrode
With.The present invention using pyrrole monomer and cobalt saline solution as electrolyte, by the method for cyclic voltammetric on same electrode simultaneously into
Row anodic deposition polypyrrole and cathode deposition cobalt hydroxide, are a kind of simple and environmentally friendly preparation methods, gained composite material knot
Structure is regular and with good chemical property, is a kind of ideal electrode material for super capacitor, is especially suitable for industrializing
Production.
Invention content
The purpose of the present invention is to provide a kind of preparation sides of polypyrrole/cobalt hydroxide composite electrode material for super capacitor
Method.
The specific steps are：
（1）Pyrrole monomer is added in the aqueous solution for being 0.1 ~ 2M in concentration of cobalt ions, 2h is stirred at room temperature until pyrrole monomer is complete
Electrolyte is made in dissolving.
（2）Take 50mL steps（1）Electrolyte obtained is placed in electrolytic cell, to be compacted carbon paper or graphene paper as work electricity
Pole and to electrode, saturated calomel electrode is reference electrode, and three-electrode system is configured, with the sweep speed of 5 ~ 2000mV/s -1V ~
Cyclic voltammetry scan 100 ~ 10000 is carried out between 1V to system to enclose.
（3）After reaction, step is removed（2）Working electrode and to electrode, with deionized water soaked overnight to remove
Foreign ion is dried for 24 hours at 60 DEG C, obtains polypyrrole/cobalt hydroxide composite electrode material for super capacitor.
The ratio between amount of substance of the pyrrole monomer and cobalt ions is 0.1 ~ 5:1.
The method of the present invention preparation process is simple and environmentally-friendly, reliable, and raw material sources are extensive, of low cost, is suitble to industry metaplasia
Production, obtained polypyrrole/cobalt hydroxide composite electrode material for super capacitor have both high conductivity and high capacitance, have
The electrochemical window of bigger, higher specific capacitance are a kind of ideal electrode material for super capacitor.
Description of the drawings
Fig. 1 is the electro-deposition curve in 5 preparation process of the embodiment of the present invention.
Fig. 2 is the scanning electricity of polypyrrole made from the embodiment of the present invention 5/cobalt hydroxide composite electrode material for super capacitor
Mirror figure.
Fig. 3 is polypyrrole made from the embodiment of the present invention 5/cobalt hydroxide composite electrode material for super capacitor in hydroxide
Cyclic voltammogram in potassium solution.
Fig. 4 is polypyrrole made from the embodiment of the present invention 5/cobalt hydroxide composite electrode material for super capacitor in hydroxide
AC impedance figure in potassium solution.
Fig. 5 is polypyrrole made from the embodiment of the present invention 5/cobalt hydroxide composite electrode material for super capacitor in hydroxide
Constant current charge-discharge figure in potassium solution.
Specific embodiment
Embodiment 1：
（1）Cobalt nitrate and the aqueous solution of pyrroles, concentration of cobalt ions 0.2M, a concentration of 0.02M of pyrrole monomer is configured.It is stirred at room temperature
2h is until pyrrole monomer is completely dissolved.
（2）Take 50mL steps（1）Electrolyte obtained is placed in electrolytic cell, with 1 × 4cm2Be compacted carbon paper for working electrode and
To electrode.Saturated calomel electrode is reference electrode, three-electrode system is configured, with the sweep speed of 100mV/s between -1V ~ 1V
Cyclic voltammetry scan 150 is carried out to system to enclose.
（3）After reaction, step is removed（2）Working electrode and to electrode, with deionized water soaked overnight to remove
Foreign ion is dried for 24 hours at 60 DEG C, obtains polypyrrole/cobalt hydroxide composite electrode material for super capacitor.
Embodiment 2：
The step of repeating embodiment 1, pyrrole monomer concentration is configured to 0.04M by concentration of cobalt ions 0.2M.（Pyrrole monomer
It is 0.2 with the ratio between the amount of substance of cobalt ions）
Embodiment 3：
The step of repeating embodiment 1, pyrrole monomer concentration is configured to 0.05M by concentration of cobalt ions 0.2M.（Pyrrole monomer
It is 0.25 with the ratio between the amount of substance of cobalt ions）
Embodiment 4：
The step of repeating embodiment 1, pyrrole monomer concentration is configured to 0.1M by concentration of cobalt ions 0.2M.（The sum of pyrrole monomer
The ratio between amount of substance of cobalt ions is 0.5）
Embodiment 5：
The step of repeating embodiment 1, pyrrole monomer concentration is configured to 0.2M by concentration of cobalt ions 0.2M.（The sum of pyrrole monomer
The ratio between amount of substance of cobalt ions is 1）
Embodiment 6：
The step of repeating embodiment 1, pyrrole monomer concentration is configured to 0.4M by concentration of cobalt ions 0.2M.（The sum of pyrrole monomer
The ratio between amount of substance of cobalt ions is 2）
Embodiment 7：
The step of repeating embodiment 1, pyrrole monomer concentration is configured to 0.8M by concentration of cobalt ions 0.2M.（The sum of pyrrole monomer
The ratio between amount of substance of cobalt ions is 4）
Embodiment 8：
The step of repeating embodiment 1, pyrrole monomer concentration is configured to 1M by concentration of cobalt ions 0.2M.（Pyrrole monomer and cobalt
The ratio between amount of substance of ion is 5）
Embodiment 9：
The step of repeating embodiment 1, changes cobalt nitrate into cobalt acetate.
Embodiment 10：
The step of repeating embodiment 2, changes cobalt nitrate into cobalt acetate.
Embodiment 11：
The step of repeating embodiment 3, changes cobalt nitrate into cobalt acetate.
Embodiment 12：
The step of repeating embodiment 4, changes cobalt nitrate into cobalt acetate.
Embodiment 13：
The step of repeating embodiment 5, changes cobalt nitrate into cobalt acetate.
Embodiment 14：
The step of repeating embodiment 6, changes cobalt nitrate into cobalt acetate.
Embodiment 15：
The step of repeating embodiment 7, changes cobalt nitrate into cobalt acetate.
Embodiment 16：
The step of repeating embodiment 8, changes cobalt nitrate into cobalt acetate.
Embodiment 17：
The step of repeating embodiment 1 changes compacting carbon paper into graphene paper.
Embodiment 18：
The step of repeating embodiment 2 changes compacting carbon paper into graphene paper.
Embodiment 19：
The step of repeating embodiment 3 changes compacting carbon paper into graphene paper.
Embodiment 20：
The step of repeating embodiment 4 changes compacting carbon paper into graphene paper.
Embodiment 21：
The step of repeating embodiment 5 changes compacting carbon paper into graphene paper.
Embodiment 22：
The step of repeating embodiment 6 changes compacting carbon paper into graphene paper.
Embodiment 23：
The step of repeating embodiment 7 changes compacting carbon paper into graphene paper.
Embodiment 24：
The step of repeating embodiment 8 changes compacting carbon paper into graphene paper.
Embodiment 25：
The step of repeating embodiment 1, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Embodiment 26：
The step of repeating embodiment 2, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Embodiment 27：
The step of repeating embodiment 3, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Embodiment 28：
The step of repeating embodiment 4, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Embodiment 29：
The step of repeating embodiment 5, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Embodiment 30：
The step of repeating embodiment 6, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Embodiment 31：
The step of repeating embodiment 7, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Embodiment 32：
The step of repeating embodiment 8, changes cobalt nitrate into cobalt acetate, changes compacting carbon paper into graphene paper.
Claims (1)
- A kind of 1. preparation method of polypyrrole/cobalt hydroxide composite electrode material for super capacitor, it is characterised in that specific steps For：（1）Pyrrole monomer is added in the aqueous solution for being 0.1 ~ 2M in concentration of cobalt ions, 2h is stirred at room temperature until pyrrole monomer is complete Electrolyte is made in dissolving；（2）Take 50mL steps（1）Electrolyte obtained is placed in electrolytic cell, using be compacted carbon paper or graphene paper for working electrode with To electrode, saturated calomel electrode is reference electrode, be configured three-electrode system, with the sweep speed of 5 ~ 2000mV/s -1V ~ 1V it Between to system carry out cyclic voltammetry scan 100 ~ 10000 enclose；（3）After reaction, step is removed（2）Working electrode and to electrode, with deionized water soaked overnight to remove impurity Ion is dried for 24 hours at 60 DEG C, obtains polypyrrole/cobalt hydroxide composite electrode material for super capacitor；The ratio between amount of substance of the pyrrole monomer and cobalt ions is 0.1 ~ 5:1.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093972A (en) * | 2013-01-25 | 2013-05-08 | 中北大学 | Preparation method of composite membrane electrode materials applied to micro-electromechanical system (MEMS) supercapacitor |
| CN104191702A (en) * | 2014-06-16 | 2014-12-10 | 华中科技大学 | Nanometer cobalt hydroxide-graphene composite membrane and preparation method and application thereof |
| CN107221448A (en) * | 2017-05-03 | 2017-09-29 | 青岛科技大学 | A kind of electrode material for super capacitor PANI/CeO2/Ni(OH)2Multistage microballoon and preparation method thereof |
-
2017
- 2017-12-24 CN CN201711413848.7A patent/CN108269697A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093972A (en) * | 2013-01-25 | 2013-05-08 | 中北大学 | Preparation method of composite membrane electrode materials applied to micro-electromechanical system (MEMS) supercapacitor |
| CN104191702A (en) * | 2014-06-16 | 2014-12-10 | 华中科技大学 | Nanometer cobalt hydroxide-graphene composite membrane and preparation method and application thereof |
| CN107221448A (en) * | 2017-05-03 | 2017-09-29 | 青岛科技大学 | A kind of electrode material for super capacitor PANI/CeO2/Ni(OH)2Multistage microballoon and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JUN SEOP LEE等: ""Highly ordered, polypyrrole-coated Co(OH)2 architectures for high-performance asymmetric supercapacitors"", 《JOURNAL OF MATERIALS CHEMISTRY A》 * |
| 任永桃: ""钴、镍(氢)氧化物/石墨纸柔性复合材料的电沉积制备及电化学性能"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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