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Carbon-plastic electricity-conductive bipolar board for liquid energy-storing battery and manufacture thereof

A liquid flow energy storage battery and bipolar plate technology, which is applied in the direction of electrode manufacturing, active material electrodes, fuel cell parts, etc., can solve the problems of small area and large thickness, and achieve cost reduction, high conductivity, good The effect of liquid resistance and mechanical properties

Active Publication Date: 2010-05-19
DALIAN RONGKE POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above process can only be used to prepare plates with larger thickness and smaller area.

Method used

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  • Carbon-plastic electricity-conductive bipolar board for liquid energy-storing battery and manufacture thereof
  • Carbon-plastic electricity-conductive bipolar board for liquid energy-storing battery and manufacture thereof
  • Carbon-plastic electricity-conductive bipolar board for liquid energy-storing battery and manufacture thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh respectively 10kg of polyvinyl chloride resin, 12kg of graphite powder, 0.06kg of dioctyl terephthalate (DOTP), 0.06kg of polyethylene wax, isopropyl tri(dioctyl phosphate) titanate (KR-12) 0.08kg, put into the high-speed mixer and mix, the stirring speed is 2500 rpm, the stirring time is 10 minutes / time, and the stirring frequency is 2 times. Then, it is sent to an internal mixer for mixing and granulation to obtain a carbon-plastic conductive composite material masterbatch. The mixing temperature is 180° C. and the mixing time is 5 minutes. The masterbatch is fed into the extruder, the head temperature of the extruder is 200°C, the sheet is extruded and calendered. The carbon-plastic conductive composite material bipolar plate can be prepared.

Embodiment 2

[0037] Weigh respectively 5kg of SBS (styrene-butadiene-styrene block copolymer), 5kg of polystyrene, 0.1kg of calcium stearate, and 0.1kg of vinyl silane, and put them into a high-speed stirrer for mixing, stirring The speed is 1500 rpm, stirring for 10 minutes / time, and the number of stirring times is 5 times. Then it is sent to an internal mixer for kneading and granulation to obtain a blended elastomer. The kneading temperature was 200° C., and the kneading time was 10 minutes. The above-mentioned blended elastomer and 12 kg of conductive carbon black were sent into an internal mixer for mixing and granulation to obtain a conductive masterbatch. The mixing temperature was 200° C. and the mixing time was 20 minutes. The masterbatch is fed into the extruder, the head temperature of the extruder is 200°C, the sheet is extruded and calendered. The carbon-plastic conductive composite material bipolar plate can be prepared.

Embodiment 3

[0039] Weigh 8.5kg of polypropylene, 1.5kg of POE elastomer, 7kg of graphite, 5kg of conductive carbon black, 0.1kg of carbon fiber, 0.1kg of aminosilane, and 0.05kg of chlorinated paraffin into a high-speed stirrer, stirring twice, stirring 10 minutes / time, stirring speed 3000 rpm. Then it is sent into a twin-screw extruder for mixing and granulation to obtain a conductive masterbatch. The kneading temperature was 220° C., and the kneading time was 15 minutes. The masterbatch is sent into the extruder, the temperature of the head of the extruder is 220°C, the sheet is extruded and calendered. The carbon-plastic conductive composite bipolar plate can be obtained, the thickness of the bipolar plate is 1mm, the length is 700mm, the width is 500mm, and the area is 3500cm 2 . Use this bipolar plate to assemble an all-vanadium flow energy storage battery stack. The battery stack is composed of 15 cells, and the positive electrolyte is 1.5MVO. 2+ 40l of 3M sulfuric acid solution...

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Abstract

The invention relates to a redox flow storage battery, in particular to a redox flow storage battery which adopts carbon conductive composite bipolar plates. The redox flow storage battery is characterized in that the redox flow storage battery contains polymer resin, carbon conductive filling and accessory ingredient; the quality ratio of polymer resin to carbon conductive filling is 1-7:9-3, andthe quality ratio of accessory ingredient to polymer resin is 0.05-0.7:10; the sap flow storage battery is made through mixing and granulation, extrusion and calendaring. The material is of high conductivity and good liquidity resistance and mechanical property. Bipolar plates with small thickness and large area can be made through extrusion and calendaring technique. The extrusion and calendaring technique is high in production efficiency and can effectively reduce the cost of the battery, which is good for the commercialization of the battery.

Description

technical field [0001] The invention relates to a liquid flow energy storage battery, in particular to a bipolar plate of an all-vanadium flow energy storage battery and a preparation method thereof. Background technique [0002] The world-wide energy shortage and the aggravated deterioration of the environment have prompted countries all over the world to fully develop and utilize renewable energy. Renewable energy must be regulated by electricity storage to ensure the stable power supply of the renewable energy power generation system and make full and effective use of its power generation capacity. In addition, there is an urgent need to develop large-scale power storage and energy storage technologies for peak-shaving and valley-filling and load balancing of the power grid. Liquid flow energy storage batteries have long life, high reliability, flexible design, no special terrain requirements, no emissions and noise, and low operation and maintenance costs. They are idea...

Claims

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Application Information

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IPC IPC(8): H01M4/02H01M4/04H01M8/02
CPCY02E60/50
Inventor 刘宗浩张华民韩希高素军郝玥
Owner DALIAN RONGKE POWER
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