Method for preparing homogeneous-phase ion exchange membrane of all-vanadium battery by use of slurry coating method

A homogeneous ion exchange, all-vanadium battery technology, applied in fuel cell parts, fuel cells, battery electrodes, etc., can solve the problems of homogeneous ion exchange membrane production and less practical application, and achieve the effect of simple preparation route

Inactive Publication Date: 2015-07-15
SHENZHEN SINOCREDO NEW ENERGY TECH
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Problems solved by technology

However, the actual production and practical application of homogeneous ion-exchange membranes are seldom

Method used

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Embodiment Construction

[0008] A method for preparing a homogeneous ion-exchange membrane for an all-vanadium battery by using a slurry coating method, the following is one of the specific implementation methods.

[0009] (1) Preparation of slurry: Add 100 parts of styrene, 14 parts of divinylbenzene, 8 parts of chlorinated polyethylene, and 1 part of benzoyl peroxide into a reaction kettle with a stirrer, at room temperature Stir to make a homogeneous slurry.

[0010] (2) Sizing: Lay a polyester film on a smooth bright aluminum plate, place a filament polyvinyl chloride cloth on it, pour the slurry, then cover another polyester film on the slurry, and roll it evenly with a rubber roller. , and then place the filament polyvinyl chloride cloth on it, pour the slurry, cover the polyester film on the slurry, roll it evenly with a rubber roller, and repeat the slurrying operation in this way, you can get a coating composed of 10-20 filament polyvinyl chloride cloth, Finally, another bright aluminum plat...

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Abstract

The invention discloses a method for preparing a homogeneous-phase ion exchange membrane of an all-vanadium battery by use of a slurry coating method. The method comprises the following steps: adding styrene, divinylbenzene, chlorinated polyethylene and benzoyl peroxide to a reaction kettle and stirring evenly to obtain a slurry; secondly, spreading a polyester thin film on a smooth polished aluminum plate and placing long-filament polyvinyl chloride fiber cloth on the polyester thin film, pouring the slurry onto the long-filament polyvinyl chloride fiber cloth, and finally, covering with another polished aluminum plate, putting into a press, pressurizing and heating, cooling, taking out, and stripping to obtain a base film; putting the base film in concentrated sulfuric acid containing silver sulfate for sulfonating, cooling, and then taking out the base film and soaking the base film into the aqueous solution of sulfuric acid; putting the base film in chloromethyl ether for reacting for 8 hours at 40-50 DEG C in an airtight state, thereby obtaining a chloromethyl film; soaking the chloromethyl film in the aqueous solution of trimethylamine for reacting for 8-10 hours at 30-35 DEG C, taking out, and washing by use of purified water to obtain a strong base quaternary ammonium anion-exchange membrane. With the method, large-size homogeneous-phase ion exchange membranes can be prepared, and the chemical stability and the like of the ion exchange membranes can be improved.

Description

technical field [0001] The invention relates to a method for preparing a homogeneous ion exchange membrane of an all-vanadium battery by adopting a slurry coating method. Background technique [0002] All-vanadium redox flow battery (VRB) is a new type of chemical power source. It uses vanadium ions of different valence states dissolved in the electrolyte as the positive and negative active materials of the battery. The positive and negative electrolytes are stored separately. From the principle On the one hand, it avoids the self-discharge phenomenon in the battery storage process, and is suitable for large-scale energy storage process applications. Since the all-vanadium redox flow battery is of special significance to the power generation process of renewable energy such as wind energy and solar energy, it has been given priority in the development of the key technology of renewable energy utilization process in the world. [0003] Ion exchange membrane is an important p...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M8/18
CPCH01M4/88H01M4/94H01M8/0239H01M8/0245H01M8/18Y02E60/50
Inventor 陈殿磊吴艳民任凤
Owner SHENZHEN SINOCREDO NEW ENERGY TECH
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