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Mesoporous carbon/RuO2 composite material for supercapacitor and preparation method thereof

A technology of supercapacitors and composite materials, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., to achieve the effects of simple preparation methods, easy implementation, and high specific capacity

Inactive Publication Date: 2014-03-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, the structure-controllable ordered mesoporous carbons have been synthesized by the soft template method, followed by the RuO 2 Doped into ordered mesoporous carbon to obtain ordered mesoporous carbon / RuO 2 The preparation method of composite materials as supercapacitor electrode materials has not been reported in the relevant literature.

Method used

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  • Mesoporous carbon/RuO2 composite material for supercapacitor and preparation method thereof
  • Mesoporous carbon/RuO2 composite material for supercapacitor and preparation method thereof
  • Mesoporous carbon/RuO2 composite material for supercapacitor and preparation method thereof

Examples

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Embodiment 1

[0033] 1. Synthesis of precursor phenolic resin: Melt phenol at 40°C, add 20wt% NaOH solution and 37wt% formaldehyde solution in turn, heat, stir at 80°C for 1 hour to obtain a brownish-yellow solution, cool to room temperature, and use HCl solution Adjust the pH to 7. Moisture was removed under vacuum to obtain anhydrous phenolic resin, which was formulated into 20wt% phenolic resin ethanol solution.

[0034]2. Assembly of ordered intermediate polymer: Dissolve Pluronic amphiphilic block copolymer (F127) in ethanol solution, then add the phenolic resin ethanol solution prepared in step 1, and stir to obtain a uniform solution , wherein the molar ratio of amphiphilic block copolymer, phenol, formaldehyde, and ethanol is 0.005:1:2:30. The above solution was transferred to a petri dish, and ethanol was volatilized at room temperature for 8 hours to form a transparent film, and then the petri dish was dried in an oven at 100°C for 24 hours to obtain an ordered intermediate polym...

Embodiment 2

[0041] A method for preparing a composite mesoporous carbon-based electrode material for supercapacitors, specifically comprising the following steps:

[0042] 1. Synthesis of precursor phenolic resin: Melt phenol at 50°C, add NaOH solution and 37 wt% formaldehyde solution in sequence, heat, stir at 70°C for 1.5h to obtain a brown-yellow solution, cool to room temperature, and use HCl solution Adjust the pH to 7. Moisture was removed under vacuum to obtain anhydrous phenolic resin, which was formulated into 20wt% phenolic resin ethanol solution.

[0043] 2. Assembly of ordered intermediate polymers: Dissolve Pluronic amphiphilic block copolymers (F123 and F68) in ethanol solution, then add the phenolic resin ethanol solution prepared in step 1, and stir A homogeneous solution was obtained, wherein the molar ratio of the amphiphilic block copolymer, phenol, formaldehyde, and ethanol was 0.015:1:2:50. The above solution was transferred to a petri dish, and ethanol was volatili...

Embodiment 3

[0050] A method for preparing a composite mesoporous carbon-based electrode material for supercapacitors, specifically comprising the following steps:

[0051] 1. Synthesis of precursor phenolic resin: Melt phenol at 60°C, add NaOH solution and 37wt% formaldehyde solution in turn, heat, stir at 80°C for 1 hour to obtain a brownish-yellow solution, cool to room temperature, and use HCl solution to adjust the pH Adjust to 7. Moisture was removed under vacuum to obtain anhydrous phenolic resin, which was formulated into 20wt% phenolic resin ethanol solution.

[0052] 2. Assembly of ordered intermediate polymer: Dissolve Pluronic amphiphilic block copolymer (F68) in ethanol solution, then add the phenolic resin ethanol solution prepared in step 1, and stir to obtain a uniform solution , wherein the molar ratio of copolymer, phenol, formaldehyde, and ethanol is 0.03:1:2:70. The above solution was transferred to a petri dish, and ethanol was volatilized at room temperature for 12 ...

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Abstract

The invention relates to a mesoporous carbon / RuO2 composite material for a supercapacitor and a preparation method thereof. Firstly, a soft template method is adopted for synthesizing an ordered mesoporous carbon material with a specific porous structure and specific surface area, and then RuO2 is doped into the ordered mesoporous carbon through a Sol-gel method so as to obtain an ordered mesoporous carbon / RuO2 composite electrode material for the supercapacitor, wherein the content of RuO2 is 3wt% to 95wt%; the composite material fully shows the advantages of a double electrode layer capacitor and a pseudocapacitor such as high specific capacity (wherein the maximum specific capacity reaches to 950 F / g), good rate performance, good cycle performance and relatively low cost, and the material provides a new approach to comprehensively improve the material performance of the supercapacitor.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and in particular relates to a composite mesoporous carbon-based electrode material used for supercapacitor electrodes and a preparation method. Background technique [0002] Supercapacitor (Supercapacitor), also known as electrochemical capacitor, ultra-high capacitor, gold capacitor, etc., is a new type of large-capacity energy storage device based on the principle of electrochemistry. Supercapacitor has excellent pulse charge and discharge performance. It is a hybrid device of transition battery and traditional capacitor, which can effectively improve energy storage and conversion efficiency. The specific energy is 20-200 times that of traditional capacitors, and it has higher power than batteries. density. Supercapacitors have broad prospects in applications such as electric vehicles and national defense weapons, and contain huge business opportunities. [0003] According to the charge storag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/32H01G11/86
CPCY02E60/13
Inventor 郑欧林振宇黄连珠苏少明
Owner FUZHOU UNIV
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