Nano particle/carbon fiber cloth composite electrode material and preparation method thereof

A composite electrode and nanoparticle technology, which is applied in hybrid capacitor electrodes, battery electrodes, nanotechnology and other directions, can solve the problems of easy shedding of active materials and easy damage to the structure of active materials. The effect of excellent electrochemical performance

Inactive Publication Date: 2019-01-15
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a nanoparticle / carbon fiber cloth composite electrode material and its preparation method, which overcomes the shortcomings of the continuous active material structure on the surface during the folding and bending process, and the active material is easy to fall off during the cycle process.

Method used

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  • Nano particle/carbon fiber cloth composite electrode material and preparation method thereof
  • Nano particle/carbon fiber cloth composite electrode material and preparation method thereof
  • Nano particle/carbon fiber cloth composite electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A piece of phenolic-based activated carbon fiber cloth was immersed in concentrated nitric acid at 100°C for 12 hours, and then cleaned with water and ethanol for later use. Soak the pretreated carbon fiber cloth in 0.5M nickel nitrate aqueous solution at 20°C for 6h. The carbon fiber cloth loaded with nickel nitrate was placed in a tube furnace, heated to 800°C with an argon-hydrogen mixture, and kept for 0.5h to obtain a composite of mesoporous carbon fibers embedded with nano-nickel particles. Among them, the BET specific surface area of ​​mesoporous carbon fiber cloth is about 1100m 2 / g, the specific pore volume is about 0.5cm 3 / g, nickel particle size is 20-60nm. The obtained composite is placed in a tube furnace, and the sulfur powder is placed at one end of the tube furnace near the air inlet. The molar ratio of nickel and sulfur powder in the composite is 1:2, and the argon is heated to 200°C, heat preservation for 10h, and finally get the NiS embedded in t...

Embodiment 2

[0034] A piece of phenolic-based activated carbon fiber cloth was pretreated by immersing in concentrated nitric acid at 90°C for 4 hours, and then cleaned with water and ethanol for later use. Place the pretreated carbon fiber cloth in 0.1M ferric chloride ethanol solution and soak at 40°C for 24h. The carbon fiber cloth loaded with ferric chloride was placed in a tube furnace, heated to 900°C with argon gas, and kept for 2 hours to obtain a composite of mesoporous carbon fibers embedded with nano-iron particles. The prepared composite was placed in a tube furnace, heated to 350 °C with oxygen, and kept for 10 h, and finally the mesoporous carbon fiber cloth embedded with Fe was obtained. 2 o 3 Nanoparticle composite electrode materials.

[0035] will get Fe 2 o 3 Composite carbon fiber cloth was used as supercapacitor electrode material for three-electrode system test, platinum sheet was used as counter electrode, Ag / AgCl was used as reference electrode, 1M Na 2 SO 4 A...

Embodiment 3

[0037] A piece of phenolic-based activated carbon fiber cloth was immersed in concentrated nitric acid at 120°C for 4 hours, and then cleaned with water and ethanol for later use. Place the pretreated carbon fiber cloth in 0.05M titanium tetrachloride aqueous solution and soak at 20°C for 48h. The carbon fiber cloth loaded with titanium tetrachloride was placed in a tube furnace, heated to 1200°C with argon gas, and kept for 1 hour to obtain a composite of mesoporous carbon fibers embedded with nano-titanium oxide particles. The prepared composite was placed in a tube furnace, heated to 650° C. with ammonia gas, and kept for 10 h. Finally, a composite electrode material with TiN nanoparticles embedded in mesoporous carbon fiber cloth was obtained.

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Abstract

The invention discloses a nano particle/carbon fiber cloth composite electrode material and a preparation method thereof, comprises loading a transition metal salt in a micron-sized phenolic aldehyde-based activated carbon fiber treated with pre-nitric acid by an impregnation method, The mesoporous carbon fibers embedded with transition metal oxide/sulfide/nitride/phosphide nanoparticles can alsobe prepared by high temperature oxidation/sulfidation/nitridation/phosphatization. The nano-particle/carbon fiber cloth composite electrode material prepared by the invention has excellent electrochemical performance and can be applied in the fields of energy storage and conversion such as supercapacitor, lithium/sodium ion battery and electrocatalysis.

Description

technical field [0001] The invention relates to a nano particle / carbon fiber cloth composite electrode material used in the field of energy storage and conversion, and belongs to the technical field of material preparation. Background technique [0002] In recent years, the demand for wearable flexible electronic devices has been increasing, and bendable and foldable flexible batteries and supercapacitors are the core components of flexible electronic devices, and the preparation of flexible electrodes has become one of the indispensable keys. At present, flexible carbon-based current collectors represented by carbon fiber cloth have received widespread attention, which have excellent foldable bending properties, excellent electrical conductivity, high loadable specific surface area, and light weight. The electrodes prepared from them are relatively Electrodes prepared from traditional metal current collectors have high energy density, do not require the use of conductive ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58B82Y30/00
CPCB82Y30/00H01G11/24H01G11/46H01M4/362H01M4/5815H01M2004/021Y02E60/10Y02E60/13
Inventor 夏晖陈琪翟腾孙硕万黎明
Owner NANJING UNIV OF SCI & TECH
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