Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and system for reducing oxidation rate of flow battery electrodes

A technology for flow battery and electrode oxidation, applied in the direction of regenerative fuel cells, etc., can solve the problems of no substantive effect and little effect of protecting electrodes, and achieve the effect of reducing the oxidation speed, the method is safe, and the oxidation speed is slow.

Active Publication Date: 2021-10-26
DALIAN RONGKE POWER
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The method of increasing the flow rate at the end of charging: In previous reports, the method of increasing the flow rate of the electrolyte at the end of charging was used to reduce the charging difficulties caused by the increase in concentration polarization at the end of charging, thereby slowing down the electrode oxidation. However, this method has little effect on protecting the electrodes. Minor, no substantial effect

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for reducing oxidation rate of flow battery electrodes
  • Method and system for reducing oxidation rate of flow battery electrodes
  • Method and system for reducing oxidation rate of flow battery electrodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In this embodiment, a method for reducing the oxidation rate of the electrodes of the flow battery is to quickly determine the overall average valence state of the positive and negative electrolytes before the SOC of the positive electrolyte reaches 85%. When the overall average valence state is ≥3.6, specifically, when the SOC of the positive electrode electrolyte is greater than 85% at the end of charging, method 1 is used to reduce the oxidation speed of the positive carbon felt electrode—the method of automatically adding a reducing agent; when When the overall valence state is <3.6, specifically, when the SOC of the positive electrode electrolyte is greater than 80%, use method 2 to reduce the oxidation rate of the positive carbon felt electrode—introduce part of the negative electrode electrolyte to the positive electrode.

[0022] Among them, the calculation method of the overall average valence state of the electrolyte is as follows:

[0023] There are four vale...

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

No PUM Login to View More

Abstract

The method and system for reducing the oxidation rate of the electrode of the flow battery belong to the field of the flow battery. In order to solve the problem of the electrode oxidation of the flow battery, the technical points are: including the step of adding an organic reducing agent to the positive electrolyte solution, and the effect is to reduce Oxidation rate of the positive carbon felt electrode.

Description

technical field [0001] The invention belongs to the field of liquid flow batteries, and relates to a method and a system for reducing the oxidation speed of electrodes of a liquid flow battery. Background technique [0002] All-vanadium redox flow battery has become the first choice for large-scale energy storage due to its advantages of high safety, long life, independent power capacity and convenient scale. However, the long-term operation stability of each component equipment of a large-scale MW vanadium battery project will be the main factor restricting the performance of vanadium batteries. Among them, the 10kW electric stack involves the series-parallel connection of several electric stacks, and each electric stack includes dozens of single cells in series, so the decline in the performance of any one of the batteries will directly affect the normal use of the entire electric stack, so How to improve the tolerance of a single battery, and then increase the stability ...

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
CPCH01M8/18Y02E60/50
Inventor 高新亮张华民邹毅王晓丽张涛
Owner DALIAN RONGKE POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com