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Deformation-resistant zinc-bromine flow battery plate and preparation method thereof

A zinc-bromine flow battery, anti-deformation technology, applied in the direction of fuel cells, regenerative fuel cells, fuel cell components, etc., can solve the problem of reduced anti-deformation ability, achieve internal defect reduction, good conduction, and reduce resistance rate effect

Active Publication Date: 2015-11-04
江苏恒安储能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pure PE substrate has strong solvent resistance and is not easily deformed after soaking in the electrolyte, but the anti-deformation ability of the conductive plastic plate is significantly reduced, which shows that the filling of conductive additives has a great influence on the performance of the plate

Method used

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  • Deformation-resistant zinc-bromine flow battery plate and preparation method thereof
  • Deformation-resistant zinc-bromine flow battery plate and preparation method thereof
  • Deformation-resistant zinc-bromine flow battery plate and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0043] Embodiment 1 of the present invention: the preparation method of the anti-deformation zinc-bromine liquid flow battery pole plate, comprises the following steps:

[0044] (1) Weigh 70 grams of conductive carbon black, 70 grams of graphite, 30 grams of carbon nanotubes and 130 grams of carbon fiber powder, and pre-mix until uniform by rotating and stirring, as a conductive additive;

[0045] (2) Weigh 700 grams of PE substrate (LLDPE and HDPE with a mass ratio of 1:2), add the above-mentioned conductive additive (300 grams in total) and perform secondary stirring until evenly mixed to obtain a mixture;

[0046] (3) Feed the mixture into the co-rotating twin-screw extruder for hot-melt mixing and extrusion. The extrusion temperature is 200-210°C, the extrusion pressure is 15-18Mpa, and the extruder speed is 250-260rpm; The material is extruded from a hanger-type "T" die head, and is cooled and calendered by a calender roll. The temperature of the calender roll is 80-90°C,...

Embodiment 2

[0047] Embodiment 2 of the present invention: the preparation method of the anti-deformation zinc-bromine flow battery pole plate comprises the following steps:

[0048] (1) Weigh 50 grams of conductive carbon black, 100 grams of graphite, 50 grams of carbon nanotubes and 150 grams of carbon fiber powder, and pre-mix until uniform by rotating and stirring, as a conductive additive;

[0049] (2) Weigh 650 grams of PE substrate (LLDPE and HDPE with a mass ratio of 1:2), add the above-mentioned conductive additive (350 grams in total) and carry out secondary stirring until evenly mixed to obtain a mixture;

[0050] (3) Feed the mixture into the co-rotating twin-screw extruder for hot-melt mixing and extrusion. The extrusion temperature is 220°C, the extrusion pressure is 10Mpa, and the extruder speed is 200rpm; the melt material adopts the coat hanger type "T The sheet is extruded from the "type die, cooled and calendered by the calender roll, the temperature of the calender roll...

Embodiment 3

[0051] Embodiment 3 of the present invention: the preparation method of the anti-deformation zinc-bromine flow battery pole plate comprises the following steps:

[0052] (1) Weigh 90 grams of conductive carbon black, 50 grams of graphite, 10 grams of carbon nanotubes and 100 grams of carbon fiber powder, and pre-mix until uniform by rotating and stirring, as a conductive additive;

[0053] (2) Weigh 750 grams of PE base material, add the above-mentioned conductive additive (250 grams in total) and carry out secondary stirring until evenly mixed to obtain a mixture;

[0054] (3) Feed the mixture into the co-rotating twin-screw extruder for hot-melt mixing and extrusion. The extrusion temperature is 230°C, the extrusion pressure is 20Mpa, and the extruder speed is 300rpm; the melt material adopts the coat hanger type "T The sheet is extruded from the "type die, cooled and calendered by the calender roll, the temperature of the calender roll is 60°C, the roll speed is controlled ...

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Abstract

The invention discloses an anti-deformation zinc bromine flow battery plate and a preparation method thereof. The anti-deformation zinc bromine flow battery plate is prepared from 65-75 parts of PE (polyethylene) base material and 35-25 parts of conductive additive in parts by weight, wherein the conductive additive consists of 5-10 parts of conductive carbon black, 5-10 parts of graphite, 1-5 parts of carbon nano tubes and 10-16 parts of carbon fiber powder. According to the invention, a proper amount of one-dimensional linear material carbon nano tubes and carbon fiber powder are added to a common conductive additive, so that network-shaped winding lapping joint is formed in the plate prepared by adding the PE base material and then performing mixing, deformation of the plate can be effectively prevented, good conduction is realized, and the resistivity is reduced; meanwhile, the added amount of carbon black, graphite and the like is reduced to reduce the internal defects of the plate, reduce the probability that electrolyte passes by defect parts to corrode the plate and reduce the swelling deformation. Therefore, the zinc bromine flow battery plate provided by the invention not only has excellent electric conductivity but also has strong anti-deformation performance.

Description

technical field [0001] The invention relates to a deformation-resistant zinc-bromine flow battery pole plate and a preparation method thereof, belonging to the technical field of zinc-bromine flow batteries. Background technique [0002] At present, the storage batteries used in independent energy systems such as distributed energy systems are usually lead-acid batteries, and lead-acid batteries have fatal defects both in terms of their own performance and the environment, such as lead-acid batteries in hot climates The life in the environment is usually very short, especially when it is deeply discharged; at the same time, lead-acid batteries are also harmful to the environment, because one of its main components is lead, which may cause serious environmental problems during production and disposal. [0003] Flow electrolyte batteries, such as zinc-bromine batteries and all-vanadium flow batteries, can overcome the above-mentioned shortcomings of lead-acid batteries, and ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M8/18B29C69/02B29C47/00B29C43/24H01M8/0223H01M8/0226
CPCY02E60/528Y02E60/50
Inventor 刘学军孟琳陆克
Owner 江苏恒安储能科技有限公司