Unlock instant, AI-driven research and patent intelligence for your innovation.

All-vanadium battery electrolyte and preparation method thereof

An all-vanadium battery and electrolyte technology, which is applied in fuel cells, organic electrolytes, non-aqueous electrolytes, etc., can solve the problems of changing the acidity of the system, enhancing the corrosion ability of the electrolyte, and affecting the service life of the stack, achieving high stability, The effect that is beneficial to the service life

Active Publication Date: 2019-02-12
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of these additives will introduce some impurity elements, and some impurity elements will change the acidity of the system, which may increase the corrosion ability of the electrolyte and affect the overall service life of the stack

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] The stable preparation method comprises the following steps:

[0014] 1) Add glycerol, maleic anhydride and acrylamide with a mass ratio of 1:6:1 to 1:6:6 into distilled water respectively, and mix evenly to obtain a first mixed solution. Wherein, the volume of distilled water accounts for 70% of the prepared additive.

[0015] In the above, in order to achieve the purpose of mixing the mixed liquid uniformly, for example, the mixed liquid may be mixed by means of stirring, however, the present invention is not limited thereto. Other methods that can make the mixed solution evenly mixed are also available. Preferably, the first mixed liquid can be obtained after being stirred for 10 minutes to 20 minutes at a rotation speed of 150 to 300 rpm, and then left to stand for 5 minutes.

[0016] 2) Take out 15% to 30% of the volume of the first mixed solution as the second mixed solution, and the remaining solution as the third mixed solution;

[0017] 3) While stirring, sl...

example 1

[0028] Prepare 150 mL of additive. Add 120ml of distilled water into the beaker, then add 5g of glycerol, 30g of maleic anhydride and 30g of acrylamide respectively. At room temperature, the mixture was stirred at a speed of 300 rpm for 20 minutes, and then stood still for 10 minutes. Divide the static mixture into two parts, one of which is 45mL of A solution, and the other part of which is 105mL of B solution. At a speed of 300 rpm, heat solution B to 90° C., add 15 ml of 75% hydrogen peroxide at a rate of 1 drop per second. Then add solution A dropwise at a rate of 2 drops per second to the above solution added with hydrogen peroxide. After the dropwise addition, keep the temperature at 90°C for 2.5 hours, adjust the rotation speed to 200 rpm, and cool to room temperature to obtain the additive .

[0029] Adding the glycerol ester copolymer additive of toric anhydride-acrylamide with a volume ratio of 4% of the electrolyte in the positive electrode electrolyte solution c...

example 2

[0031] Prepare 100 mL of additive. Add 70ml of distilled water into the beaker, then add 3g of glycerol, 18g of maleic anhydride and 9g of acrylamide respectively. At normal temperature, the mixture was stirred at a speed of 150 rpm for 20 minutes, and then stood still for 5 minutes. Divide the static mixture into two parts, one part is 15mL A solution, the other part is 85mL B solution. At a rotational speed of 150 rpm, heat solution B to 70° C., add 20 ml of 30% hydrogen peroxide at a rate of 1 drop per second. Then add solution A dropwise at the rate of 2 drops per second to the above solution added with hydrogen peroxide. After the dropwise addition, keep it warm at 70°C for 1.5 hours, adjust the rotation speed to 120 rpm, and cool to room temperature to obtain the additive .

[0032] Add the glycerin ester copolymer additive of toric anhydride-acrylamide with a volume ratio of 1.5% to the electrolyte in the positive electrode electrolyte solution containing vanadium co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
current efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention provides an all-vanadium battery electrolyte and a preparation method thereof. The all-vanadium battery electrolyte contains 1%-5% by weight of an additive, and the additive contains a carboxyl functional group and an amino functional group. The preparation method of the all-vanadium battery electrolyte comprises the steps that an electrolyte in which the mass ratio of V<4+> to V<3+> is 1:1 is prepared; 1%-5% by weight of the additive containing the carboxyl functional group and the amino functional group is added into the electrolyte in which the mass ratio of V<4+> to V<3+> is 1:1. The all-vanadium battery electrolyte added with the additive has the high stability, and the added additive has no influence on the acidity and the viscosity of the all-vanadium battery electrolyte and is beneficial for the service life of an all-vanadium battery electrolysis heap.

Description

technical field [0001] The invention belongs to the field of all-vanadium batteries, and specifically relates to an all-vanadium battery electrolyte and a preparation method thereof. Background technique [0002] All-vanadium battery has become a large-scale energy storage for renewable energy such as wind energy and solar energy, as well as for peak shaving and valley filling due to its high energy conversion efficiency, long service life, adjustable capacity according to user requirements, high safety and environmental friendliness. One of the most promising methods. All-vanadium batteries are usually composed of electrolyte, electrodes, liquid storage tanks, etc. There are many factors that affect its performance, but the performance of the electrolyte has the most obvious impact. As all-vanadium batteries are becoming more and more large-scale and large-capacity, the electrolyte is also developed with a high concentration. However, when the concentration of pentavalent...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/18
CPCH01M8/188H01M2300/0028Y02E60/50
Inventor 李道玉彭穗刘波曹敏龙秀丽陈勇韩慧果陈婷
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com