High-performance composite carbon felt

A composite carbon, high-performance technology, applied in the direction of electrical components, battery electrodes, circuits, etc., can solve the problems of poor performance of a single VRB, poor hydrophilicity of carbon felt, low electrochemical activity, etc., to achieve low cost, good stability, The effect of high electrochemical catalytic activity

Inactive Publication Date: 2015-06-17
HENAN NORMAL UNIV
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-performance composite carbon felt to solve the problems of poor hydrophilicity, poor stability, low electrical conductivity, low electrochemical activity and poor performance of a single VRB existing in the prior art. And other issues

Method used

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Embodiment 1

[0021] A kind of high-performance composite carbon felt that the present invention proposes, comprises carbon felt and functionalized carbon nanotube covering layer, and its preparation comprises the following steps:

[0022] 1. Preparation of functionalized carbon nanotubes: First, soak 200 mg of dried carbon nanotubes in concentrated sulfuric acid for 2 hours, then put them in 500-1000ml of deionized water, stir for 40 minutes, and wash with deionized water for 6 times; Then weigh 600mg of p-aminobenzenesulfonic acid, stir for 8 hours, add 2ml of hydrochloric acid, heat the above solution in water at 40°C for 6h; weigh 1g of sodium nitrite and add it to the above solution, and react at 120°C for 2h; then the solution Suction filtration, repeated washing with ammonium sulfate, sulfuric acid and deionized water, and then drying at 110°C to obtain functionalized carbon nanotubes.

[0023] 2. Preparation of functionalized carbon nanotube solution: Weigh 50 mg of functionalized c...

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Abstract

The invention relates to the field of electrode materials for vanadium redox batteries (VRB), in particular to a high-performance composite carbon felt, and solves the problems that the existing carbon felt electrode for the vanadium battery is poor in hydrophilicity, small in active area, low in electrochemical activity and conductivity, poor in vanadium ion electric catalytic performance, and low in single battery performance. The preparation method comprises the following steps: taking commercial carbon felt as a raw material, and using a method that a binder is used for binding to prepare the functionalized carbon tube composite carbon felt. The composite carbon felt prepared by the method disclosed by the invention has the advantages of good hydrophilicity, electrochemical catalysis performance, conductivity, chemical stability and single VRB performance. According to the invention, the product cost is low, industrialized production is facilitated, environment friendliness is achieved, and the high-performance composite carbon felt can be widely applied to the field of the vanadium redox batteries.

Description

technical field [0001] The invention relates to the field of electrode materials for all-vanadium redox flow batteries (VRB), in particular to a high-performance composite carbon felt. Background technique [0002] With the rapid development of the economy, new energy materials have attracted widespread attention due to their environmental friendliness and abundant resources. However, the renewable energy generation process such as wind energy and solar energy has the disadvantages of discontinuity and instability. In order to solve this problem, it is necessary to develop large-scale energy storage technologies that are efficient, cheap, less polluting, and safe and reliable. All-vanadium redox flow battery (VRB) is widely used in wind energy and solar power generation process energy storage equipment due to its advantages of power and energy independence, long cycle life, high energy efficiency, low maintenance cost, fast and deep charge and discharge, etc. , power statio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90
CPCY02E60/50
Inventor 耿振铎王玉平常晓晓耿占吉徐国亮
Owner HENAN NORMAL UNIV
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