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Vanadium cell, vanadium cell end collector plate, vanadium cell dual collector plate and preparation of vanadium cell end collector plate and vanadium cell dual collector plate

A vanadium battery and current collector technology, applied in fuel cells, regenerative fuel cells, fuel cell components, etc., can solve the problems of reduced machinability, reduced mechanical properties of products, etc., and achieves improved graphitization degree and reactivity. The effect of increasing and simplifying the operation is dangerous

Active Publication Date: 2015-04-22
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Electrodes made of polymer conductive materials ensure electrical conductivity, and the addition of conductive materials will reduce the mechanical properties and processability of the product, and slotting the overflow frame will bring considerable damage to the sealing of the battery. Troublesome, so slotting on the carbon felt is the means chosen by many vanadium battery research institutions to increase the flow performance of the electrolyte

Method used

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  • Vanadium cell, vanadium cell end collector plate, vanadium cell dual collector plate and preparation of vanadium cell end collector plate and vanadium cell dual collector plate
  • Vanadium cell, vanadium cell end collector plate, vanadium cell dual collector plate and preparation of vanadium cell end collector plate and vanadium cell dual collector plate
  • Vanadium cell, vanadium cell end collector plate, vanadium cell dual collector plate and preparation of vanadium cell end collector plate and vanadium cell dual collector plate

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preparation example Construction

[0035] The first technical problem solved by the present invention is to provide a method for preparing a vanadium battery double collector plate, comprising the following steps:

[0036] a. Curable resin pretreatment: add acetone to the curable resin and mix it evenly, and then mix it with the curing agent, wherein the volume ratio of the curable resin to acetone is 1 / 4-1 / 2;

[0037] b. Curing treatment: put the first activated carbon fiber felt in the mold, add the pretreated curable resin, and cure at room temperature so that the curable resin is not completely solidified; the thickness of the curable resin layer is 0.8-1.7cm;

[0038] c. Secondary curing: Place the second activated carbon fiber felt on the first activated carbon fiber felt after curing treatment, and pressurize and cure under the pressure of 1.5-5 kPa at room temperature for 24-48 hours to obtain the double current collector of the vanadium battery plate;

[0039] Wherein, the first activated carbon fiber...

Embodiment 1

[0066] Soak the carbon felt strip in sulfuric acid with a pH of 2 for 24 hours, then ultrasonically treat it with a frequency of 30khz for 30 minutes, take it out after cooling, wash it with distilled water for 3-4 times, and place it in an electric furnace at a temperature of 100-200°C Dry activated carbon felt strips.

[0067] First take a slice of the above-mentioned activated carbon felt and place it in the mold (the mold can be selected according to the size of the battery and the size and position of the carbon felt strip), add the diluted epoxy resin of the grade E-44, and place it in the mold at room temperature. After curing at room temperature for 10 hours, cure at room temperature so that the curable resin is in an incompletely solidified state; then place another carbon felt strip at the place corresponding to the carbon felt strip before, and apply a pressure of 1 kPa on the mold , pressurized and solidified at room temperature for 35 hours to obtain a double coll...

Embodiment 2

[0071] Soak the carbon felt strip in sulfuric acid with a pH of 3 for 19 hours, then ultrasonically treat it with a frequency of 50khz for 20 minutes, take it out after cooling, wash it with distilled water for 3-4 times, and place it in an electric furnace at a temperature of 100-200°C Dry activated carbon felt strips.

[0072] First place the copper sheet in the mold, add the diluted epoxy resin of grade E-44 (the diluent is acetone, and the volume ratio of the diluent to the epoxy resin is 1 / 4), and cure at room temperature for 9 hours Finally, put the corresponding carbon felt strip at the place corresponding to the position of the double current collector carbon felt strip obtained in the above-mentioned embodiment 1, and apply a pressure of 1.1 kPa on the mold, and pressurize and solidify at room temperature for 38 Hours, take out and polish the copper sheet with sandpaper until the polymer material attached to it is completely removed.

[0073] Cast the above-mentioned...

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Abstract

The invention relates to a redox flow cell, in particular to end and dual collector plates for an all-vanadium redox flow cell and a preparation method of the end and dual collector plates for the all-vanadium redox flow cell. The preparation method of the end and dual collector plates for the all-vanadium redox flow cell comprises the following steps of pretreatment of carbon fiber felt, pretreatment of curable resin, integrated current collector preparation by the adoption of a hot-press method and post-treatment. The preparation method for the integrated current collector plates for the vanadium cell is good in mechanical performance and easy to implement and assemble. Ultrasonic treatment is introduced in the carbon felt treatment mode, and the defects that operation difficulty is large, the danger coefficient is high and the high-temperature roasting energy consumption is large due to conventional treatment like vitriolization carried out on the carbon felt are avoided. In addition, an obtained electrode is made of pure high polymer materials, and compared with the mode that conductive materials are used as an electrode, the advantages, of being good in mechanical performance, easy to machine and lower in cost than other electrodes, of high polymer materials can be better reserved.

Description

technical field [0001] The invention relates to a redox flow battery, in particular to a terminal of an all-vanadium redox flow battery, a double collector plate and a preparation method thereof. Background technique [0002] At present, as a new type of secondary battery, the all-vanadium redox flow battery (vanadium battery) has the advantages of fast charge and discharge speed, good deep discharge performance, long cycle life, and environmental protection compared with other batteries. There are broad application prospects in areas such as energy storage power supplies for solar power generation, energy storage systems in remote areas, peak shaving in power plants (power stations), uninterruptible power supplies (UPS) or emergency power systems (EPS). [0003] The main factors affecting the performance of all-vanadium redox flow batteries are membrane, electrolyte and electrode materials. All-vanadium redox flow batteries are composed of terminal electrodes, current colle...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M8/02H01M8/0228
CPCH01M8/026H01M8/0293H01M8/188Y02E60/50
Inventor 李道玉毛凤娇程兴德蒋仁贵彭穗杨林江陈文龙曹敏
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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