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Method for chemically plating Ni-W-P on carbon felt electrode material of modified redox flow battery

A technology of electrode material and modified liquid, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of inability to comprehensively improve the performance of electrode materials and damage to the conductivity of carbon felt electrode materials, and achieve easy operation and low production cost. Effect

Inactive Publication Date: 2014-08-13
DALIAN UNIV OF TECH
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Problems solved by technology

Such a modification method will damage the conductivity of the carbon felt electrode material and cannot comprehensively improve the performance of the electrode material

Method used

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  • Method for chemically plating Ni-W-P on carbon felt electrode material of modified redox flow battery

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Embodiment Construction

[0049] The method for electroless plating Ni-W-P modified liquid flow battery carbon felt electrode material of the present invention, the steps are as follows:

[0050]⑴. Pretreatment of raw materials, cleaning, degumming and impurity removal of PAN carbon fiber felt materials. Specific treatment method: pretreatment is to put 5 mm or 5.5 mm or 6 mm thick PAN carbon fiber felt material into a beaker filled with deionized water at room temperature, and clean it in an ultrasonic oscillator for 8 minutes or 10 minutes or 12 minutes. Then put it into a beaker with acetone solution and soak for 25 minutes or 30 minutes or 35 minutes; then put the PAN carbon fiber felt material into NaOH solution (1mol / L) and soak it for 25 minutes at 75°C or 80°C or 85°C min or 30 min or 35 min; finally, put the PAN carbon fiber felt material into deionized water, and wash it with an ultrasonic oscillator for 8 min, 10 min or 12 min, and repeat 3 times until the PAN carbon fiber felt material is n...

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Abstract

The invention discloses a method for chemically plating Ni-W-P on a carbon felt electrode material of a modified redox flow battery. The method comprises the steps of carrying out cleaning and impurity removal on a PAN (Polyacrylonitrile) carbon fiber felt material; preparing a roughening solution from nitric Acid and sulfate, and soaking the PAN carbon fiber felt material in the roughening solution for increasing the surface area of the PAN carbon fiber felt material; preparing a sensitized-activated solution, and soaking the PAN carbon fiber felt material in the sensitized-activated solution; soaking the PAN carbon fiber felt material after sensitization-activation treatment in deionized water, and cleaning to be neutral; drying; chemically plating the dried PAN carbon fiber felt material in a plating solution to enable the surface to be plated with a uniform Ni-W-P alloy layer; cleaning the plated PAN carbon fiber felt material in the deionized water to be neutral; and drying for 8-10h at the temperature of 100-200 DEG C. The method for chemically plating Ni-W-P on the carbon felt electrode material of the modified redox flow battery is simple and feasible, is easy to operate and is low in the cost; with the adoption of the method, the whole performance, including the energy efficiency, the coulombic efficiency and the voltage efficiency, of the Fe / Cr redox flow battery are all improved by about 5 percent.

Description

technical field [0001] The invention relates to a method for modifying materials, in particular to a method for chemically plating Ni-W-P modified carbon felt electrode materials for liquid flow batteries. Background technique [0002] Large-scale energy storage technology is one of the key technologies to support grid-connected power generation of renewable energy and promote the construction of smart grid. Fe / Cr flow battery has the outstanding advantages of high energy density and low cost, and is one of the most promising large-scale energy storage technologies. [0003] Carbon felt materials are widely available, cheap, and have large porosity, so they are the preferred electrode materials for flow batteries. However, its electrochemical activity cannot fully meet the needs of batteries, and higher requirements are placed on the reliability of electrode materials under the conditions of acidic electrolytes. [0004] At present, the modification methods for carbon felt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88
CPCY02E60/50H01M4/8817
Inventor 谭毅张欢李佳艳施伟李倩
Owner DALIAN UNIV OF TECH
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