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Preparation method of a colloidal electrolyte special for a liquid flow battery

A colloidal electrolyte and liquid flow battery technology, which is applied in fuel cells, regenerative fuel cells, electrolyte immobilization/gelation, etc., can solve the problems of battery products such as high-current discharge performance, initial capacity decline, and high internal resistance of colloidal batteries. , to achieve good electrical conductivity, high current discharge performance improvement, and the effect of increasing internal resistance

Active Publication Date: 2019-01-25
黄春美
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: when preparing the colloidal electrolyte used in the traditional flow battery, the internal resistance of the colloidal battery caused by the direct addition of fumed silica is relatively large, which causes the high-current discharge performance and initial capacity of the battery product In order to reduce the disadvantages of the reduction, a preparation method of a colloidal electrolyte for a flow battery is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023]In parts by weight, take 10 parts of aniline, 40 parts of hydrogen peroxide, 300 parts of water, and 0.08 part of biological enzyme, first mix the aniline and water into No. 1 beaker, and move No. 1 beaker into a water bath. Under the conditions of 65°C and a stirring speed of 500r / min, stir and dissolve at a constant temperature for 2 hours, take out the No. Move the beaker to a magnetic stirrer with digital display speed measurement and constant temperature. Under the condition of temperature of 40°C and rotation speed of 500r / min, stir and react at constant temperature for 6 hours, then filter to obtain the filter residue, and wash the filter residue with deionized water for 6 times, and then wash the washed residue The filter residue was transferred to a vacuum drying oven, and was vacuum-dried to constant weight at a temperature of 90°C and a pressure of 120 Pa to obtain low-molecular-weight polyaniline; the graphene oxide and solvent were mixed and poured into a thr...

example 2

[0025] According to the mass ratio of 1:20, mix graphene oxide and solvent into a three-necked flask. Under the condition of ultrasonic frequency of 60kHz, after ultrasonic dispersion for 60min, move the three-necked flask to a digital speed measuring constant temperature magnetic stirrer, and the temperature is 85 ℃, the stirring speed is 600r / min, slowly add polyaniline 0.2 times the mass of graphene oxide to the three-necked flask at a rate of 8g / min while stirring at constant temperature, after the polyaniline is added, seal the three-necked flask and continue to keep constant temperature After airtight stirring and reacting for 12 hours, filter to obtain a filter cake, and wash the filter cake 5 times with N-methylpyrrolidone, then transfer the washed filter cake into a vacuum drying oven, at a temperature of 110°C and a pressure of 100Pa, Dry to constant weight to obtain intercalated modified graphene oxide; in parts by weight, take 30 parts of intercalated modified graph...

example 3

[0027] In parts by weight, take 10 parts of aniline, 40 parts of hydrogen peroxide, 300 parts of water, and 0.08 part of biological enzyme, first mix the aniline and water into No. 1 beaker, and move No. 1 beaker into a water bath. Under the conditions of 65°C and a stirring speed of 500r / min, stir and dissolve at a constant temperature for 2 hours, take out the No. Move the beaker to a magnetic stirrer with digital display speed measurement and constant temperature. Under the condition of temperature of 40°C and rotation speed of 500r / min, stir and react at constant temperature for 6 hours, then filter to obtain the filter residue, and wash the filter residue with deionized water for 6 times, and then wash the washed residue The filter residue was transferred to a vacuum drying oven, and was vacuum-dried to constant weight at a temperature of 90°C and a pressure of 120 Pa to obtain low-molecular-weight polyaniline; the graphene oxide and solvent were mixed and poured into a th...

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Abstract

The invention discloses a preparation method of a colloidal electrolyte special for a liquid flow battery, belonging to the technical field of battery materials. The invention comprises the followingsteps: firstly stirring and dissolving aniline and water, adding hydrogen peroxide and biological enzyme, stirring the reaction more stably, filters, washes and dries to obtain low molecular weight polyaniline; then, dispersing the graphene oxide in a solvent and stirred under constant temperature; Slowly adding low molecular weight polyaniline, stirring at a constant temperature, filtering, washing and drying to obtain intercalation modified graphene oxide; mixing and dispersing the intercalated modified graphene oxide and anhydrous ethanol, and then adding silicic acid; stirring The ester and stearic acid with heating and then concentrated under reduced pressure to give a concentrated liquid; mixing The copper sulfate solution and the sulfuric acid solution in proportion, that is, obtaining the colloidal electrolyte for the liquid flow battery. The colloidal electrolyte for flow battery prepared by the technical scheme of the invention has the characteristics of excellent large current discharge performance and initial capacity.

Description

technical field [0001] The invention discloses a preparation method of a special colloidal electrolyte for a liquid flow battery, belonging to the technical field of battery materials. Background technique [0002] At present, the problems of environmental pollution and energy shortage are serious. Because new energy can be used as a supplement to non-renewable energy and can effectively reduce environmental pollution, its development and utilization have received more and more attention, and the focus of support is on coal-based clean fuels. , wind energy, solar energy, smart grid and other major fields of new energy industries, but wind energy, solar energy and other renewable energy power generation systems are unstable and discontinuous, and cannot provide stable power supply, so in the process of developing and utilizing these renewable energy sources, it is very important The core link is to develop a large-scale power storage system to realize peak-shaving and valley-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18
CPCH01M8/188H01M2300/0085Y02E60/50
Inventor 王景硕马俊杰宋宇星
Owner 黄春美