A kind of high-performance supercapacitor electrode material pani/ceo2/ni(oh)2 multilevel microspheres and preparation method thereof

A technology of supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problem that the interface between polyaniline and metal oxides and hydroxides is not tightly combined, and the composite electrode materials of supercapacitors are difficult to be uniform. Dispersion, affecting electrochemical performance and other problems, to achieve the effects of easy control of dispersibility, mild reaction conditions and low preparation cost

Active Publication Date: 2018-09-14
上海池康半导体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at preparing polyaniline, metal oxide and hydroxide composite electrode materials with many steps, the supercapacitor composite electrode materials are difficult to disperse evenly, and the interfaces between polyaniline and metal oxides and hydroxides are not tightly combined, which affects its excellent performance. The technical problem of electrochemical performance, to provide a high-performance supercapacitor electrode material PANI / CeO 2 / Ni(OH) 2 Preparation method of multi-level microspheres

Method used

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  • A kind of high-performance supercapacitor electrode material pani/ceo2/ni(oh)2 multilevel microspheres and preparation method thereof
  • A kind of high-performance supercapacitor electrode material pani/ceo2/ni(oh)2 multilevel microspheres and preparation method thereof
  • A kind of high-performance supercapacitor electrode material pani/ceo2/ni(oh)2 multilevel microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Weigh 0.156g nickel sulfate (NiSO 4 ·6H 2 O), 0.02g cerium ammonium nitrate, 0.03g acrylamide, 0.4g hexamethylenetetramine (C 6 h 12 N 4 ) was dissolved in 20ml deionized water, mixed evenly, and recorded as solution a;

[0022] 2. Then weigh 0.01g CTAB, dissolve 0.015g aniline in 15ml deionized water, add 0.05ml hydrochloric acid dropwise, stir until the mixture is uniform, then slowly add 5ml 0.003g / ml ammonium persulfate solution drop by drop, and let stand for a while Time until the solution is dark green, which is recorded as solution b;

[0023] 3. Mix solution a and dark green solution b, transfer to a reaction kettle lined with polytetrafluoroethylene, and react at 180°C for 6h.

[0024] 4. After the reaction is over, take out the reactor and cool it to room temperature, and centrifuge and wash the precipitate three times with deionized water and absolute ethanol respectively to obtain PANI / CeO 2 / Ni(OH) 2 precipitation.

[0025] 5. Put the precipitat...

Embodiment 2

[0027] 1. Weigh 0.312g nickel sulfate (NiSO 4 ·6H 2 O), 0.04g cerium ammonium nitrate, 0.03g acrylamide, 0.8g hexamethylenetetramine (C 6 h 12 N 4 ) was dissolved in 20ml deionized water, mixed evenly, and recorded as solution a;

[0028] 2. Then weigh 0.01g CTAB, dissolve 0.03g aniline in 15ml deionized water, add dropwise 0.1ml hydrochloric acid, stir until the mixture is uniform, then slowly add 5ml 0.003g / ml ammonium persulfate solution drop by drop, let it stand for a while Time until the solution is dark green, which is recorded as solution b;

[0029] 3. Mix solution a with dark green solution b, transfer to a reaction kettle lined with polytetrafluoroethylene, and react at 180°C for 3 hours.

[0030] 4. After the reaction is over, take out the reactor and cool it to room temperature, and centrifuge and wash the precipitate three times with deionized water and absolute ethanol respectively to obtain PANI / CeO 2 / Ni(OH) 2 precipitation.

[0031] 5. Put the precipi...

Embodiment 3

[0033] 1. Weigh 0.312g nickel sulfate (NiSO 4 ·6H 2 O), 0.04g cerium ammonium nitrate, 0.03g acrylamide, 0.4g hexamethylenetetramine (C 6 h 12 N 4) was dissolved in 20ml deionized water, mixed evenly, and recorded as solution a;

[0034] 2. Then weigh 0.02g CTAB, dissolve 0.015g aniline in 15ml deionized water, add 0.05ml hydrochloric acid dropwise, stir until the mixture is uniform, then slowly add 5ml 0.003g / ml ammonium persulfate solution drop by drop, and let stand for a while Time until the solution is dark green, which is recorded as solution b;

[0035] 3. Mix solution a with dark green solution b, transfer to a reaction kettle lined with polytetrafluoroethylene, and react at 150°C for 9 hours;

[0036] 4. After the reaction is over, take out the reactor and cool it to room temperature, and centrifuge and wash the precipitate three times with deionized water and absolute ethanol respectively to obtain PANI / CeO 2 / Ni(OH) 2 precipitation;

[0037] 5. Put the preci...

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Abstract

The invention discloses a preparation method of a supercapacitor electrode material PANI / CeO2 / Ni(OH)2 multi-stage microsphere. The preparation method is characterized in that the supercapacitor electrode material PANI / CeO2 / Ni(OH)2 multi-stage microsphere is prepared through a one-step hydrothermal reaction. The preparation method comprises the following steps: dissolving nickel sulfate, ceric ammonium nitrate, acrylic amide and hexamine into water to obtain a mixed solution as a solution a; then dissolving hexadecyl trimethyl ammonium bromide and phenylamine into water, dropwise adding hydrochloric acid for uniform mixing, then dropwise adding a ammonium persulfate solution to obtain a deep green solution as a solution b; mixing the solution a with the solution b, and carrying out a hydrothermal reaction in a high pressure reactor with a polytetrafluoroethylene lining. After the reaction is finished, the obtained product is centrifugally washed and dried to obtain the PANI / CeO2 / Ni(OH)2 multi-stage microsphere. The preparation method disclosed by the invention is simple in operation, the product PANI / CeO2 / Ni(OH)2 multi-stage microsphere is good in dispersibility and high in specific surface area, and the product as the supercapacitor electrode material has extremely high specific capacitance and electrochemical cycle stability.

Description

technical field [0001] The invention belongs to the field of supercapacitor electrode materials and relates to a PANI / CeO 2 / Ni(OH) 2 Multilevel microspheres and preparation methods thereof, in particular, relate to a high-performance supercapacitor electrode material PANI / CeO 2 / Ni(OH) 2 Hierarchical microspheres and methods for their preparation. Background technique [0002] Supercapacitor is a new type of energy storage device capable of fast charging and discharging, long cycle life and high power density. It has broad application prospects in mobile communications, electric vehicles, etc., and has attracted more and more attention from researchers and industries. Electrode materials play a decisive role in the performance of supercapacitors, therefore, the preparation of high specific capacitance active materials has become the focus of research in supercapacitors. [0003] At present, transition metal hydroxides (oxides) represented by nickel hydroxide have been w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/48H01G11/24H01G11/86
CPCY02E60/13
Inventor 宋彩霞王德宝袁金钟孙欣欣
Owner 上海池康半导体科技有限公司
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