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High-performance supercapacitor electrode material and preparation method thereof

A technology for supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors. It can solve the problems of performance improvement, poor structural stability, and small specific surface area, so as to improve electrochemical energy storage performance, Mild conditions and the effect of increasing the specific surface area

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current supercapacitor electrode materials have shortcomings such as small specific surface area, poor conductivity, and poor structural stability, and their performance needs to be improved.

Method used

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  • High-performance supercapacitor electrode material and preparation method thereof
  • High-performance supercapacitor electrode material and preparation method thereof
  • High-performance supercapacitor electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Example 1: Preparation of a hierarchical porous carbon-coated CoNiMn-S nanowire composite electrode material supported on nickel foam

[0042] Follow these steps:

[0043] (1) Preparation of oligophenolic resin Resol

[0044] Add 1.0 g of phenol and 2.5 mL of 40% formaldehyde solution to 4 mL of 0.5 M NaOH solution, and stir at 65° C. for 0.7 h to obtain the oligophenolic resin Resol.

[0045] (2) Preparation of Hierarchical Porous Carbon Materials (HPC)

[0046] 0.6g P123 (EO 20 PO 70 EO 20 ), 1.1g F127(EO 106 PO 70 EO 106 ), added to the above-mentioned oligophenolic resin Resol, stirred at 65°C for 4h, cooled to room temperature, transferred the obtained solution to a hydrothermal kettle, heated at 100°C for 18h, filtered out the obtained material, washed repeatedly with distilled water, Vacuum dried at 50°C for 24h, then transferred to a tube furnace for calcination at 800°C for 1.5h under nitrogen gas protection, cooled to room temperature and ground to obta...

Embodiment 2

[0060] Example 2: Preparation of a hierarchical porous carbon-coated CoNiMn-S nanowire composite electrode material supported on nickel foam

[0061] Follow these steps:

[0062] (1) Preparation of oligophenolic resin Resol

[0063] Add 1.0 g of phenol and 4.5 mL of 37% formaldehyde solution to 6 mL of 0.5M NaOH solution, and stir at 75° C. for 0.4 h to obtain the oligophenolic resin Resol.

[0064] (2) Preparation of Hierarchical Porous Carbon Materials (HPC)

[0065] 0.9g of P123 and 1.5g of F127 were added to the above oligophenolic resin Resol, stirred at 75°C for 2h, cooled to room temperature, and then transferred to a hydrothermal kettle, heated at 130°C for 10h, and the resulting material was filtered out , repeatedly washed with distilled water, vacuum dried at 80 °C for 6 h, then transferred to a tube furnace for calcination at 550 °C for 5 h under nitrogen gas protection, cooled to room temperature and ground to obtain multi-level porous carbon materials.

[0066...

Embodiment 3

[0078] Example 3: Preparation of a hierarchical porous carbon-coated CoNiMn-S nanowire composite electrode material supported on nickel foam

[0079] Follow these steps:

[0080] (1) Preparation of oligophenolic resin Resol

[0081] Add 1.0 g of phenol and 3.5 mL of formaldehyde solution with a concentration of 39% to 5 mL of 0.5M NaOH solution, and stir at 65° C. for 0.7 h to obtain the oligophenolic resin Resol.

[0082] (2) Preparation of Hierarchical Porous Materials (HPC)

[0083] 0.85g of P123 and 1.15g of F127 were added to the above oligophenolic resin Resol, stirred at 70°C for 3h, cooled to room temperature, and then transferred to a hydrothermal kettle, heated at 120°C for 15h, and the resulting material was filtered out , repeatedly washed with distilled water, dried in vacuum at 60 °C for 15 h, and then transferred to a tube furnace for calcination at 700 °C for 4 h under the protection of argon gas, cooled to room temperature, and ground to obtain a multi-level...

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Abstract

The invention aims to provide a high-performance supercapacitor electrode material and a preparation method thereof by comprehensively applying two strategies of nickel foam substrate anchoring and hierarchical pore carbon coating aiming at the defects of small specific surface area, poor conductivity, poor structural stability and the like of the current supercapacitor electrode material. The prepared hierarchical porous carbon coating CoNiMn-S nanowire material loaded on the nickel foam shows high specific capacitance, good rate capability, low transmission resistance and excellent cycling stability when being used as a supercapacitor electrode material, and has huge application potential in the field of supercapacitors.

Description

technical field [0001] The present invention relates to the field of supercapacitor electrode materials. Background technique [0002] Supercapacitor is a new type of green and environmentally friendly energy storage device. It has the advantages of fast charging and discharging speed, high efficiency, long cycle life, wide operating temperature range, good safety, and no pollution to the environment. It is widely used in fuel cell vehicles and hybrid electric vehicles. , buses, low-temperature start of vehicles, solar energy storage devices, high-power fast-charging power supplies, etc. have broad application prospects. [0003] Electrode material is a key factor in determining the performance of supercapacitors. The current supercapacitor electrode materials have shortcomings such as small specific surface area, poor electrical conductivity, and poor structural stability, and their performance needs to be improved. SUMMARY OF THE INVENTION [0004] The purpose of this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/28H01G11/30H01G11/24H01G11/32
CPCH01G11/86H01G11/28H01G11/30H01G11/24H01G11/32Y02E60/13
Inventor 刘玉荣胡荣牛绍宇金容
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