Novel preparation method of separator zinc-bromine battery

Abstract

The invention relates to a novel method of a separator for a zinc-bromine battery. The method comprises the following steps of (1) adding 42-75 parts of polyvinyl alcohol, 5-22 parts of extending oil, 3-8 parts of non-aqueous silicon dioxide, 10-18 parts of phosphomolybdic acid, 8-25 parts of polypropylene, 0.8-6 parts of calcium carbonate, 10-18 parts of anti-oxidant, 5-12 parts of methylbenzene, 7-14 parts of methyl acrylate and 0.1-10 parts of triphenyl ethyl phenol polyoxyethylene ether phosphate into an agitator based on parts by mass, and performing stirring to obtain a mixture; (2) immersing a fiber composite layer in the mixture so that the mixture is uniformly coated outside the fiber composite layer; (3) performing pressing and formation by a five-roller calendar, and performing extraction by an oil extraction device; and (4) performing drying by a drying machine, and winding the separator by a winding machine after drying. The prepared separator is stable in physical and chemical performance and good in charging performance, and the service lifetime of the battery is substantially prolonged.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a preparation method of a novel zinc-bromine battery diaphragm. Background technique [0002] At present, a series of problems such as environmental pollution and the depletion of fossil energy are coming one after another. In order to meet the urgent demand for energy, many new, high-quality, and low-cost electrochemical systems have been proposed and developed, including iron-bromine flow batteries and Zinc bromine flow battery. [0003] Zinc-bromine flow battery is a new type of electrochemical energy storage device, which has the advantages of low consumption, high efficiency, less pollution, and high current density. At the same time, it can adapt to multiple deep charge and discharge, and the cost is low. . [0004] As one of the most important parts of the battery, the diaphragm is mainly used to isolate the electrolyte between the positive and negative electrodes in t...

AI Technical Summary

Problems solved by technology

[0004] As one of the most important parts of the battery, the diaphragm is mainly used to isolate the electrolyte between the positive and negative electrodes in the battery and to transmit ions; the existing diaphragm has a complicated manufacturing process and a high price, and its performance cannot fully meet the performance requirements of the battery

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