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

All-vanadium-redox-flow-battery electrode material and preparing method thereof

A technology for flow batteries and electrode materials, applied in battery electrodes, fuel cells, regenerative fuel cells, etc., can solve problems such as being unsuitable for large-scale applications, weakly radioactive Bi, unfavorable for wide application, etc., and achieves a simple modification method, Low cost and easy operation

Inactive Publication Date: 2017-02-15
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as Sun et al. (Sun, B.T.; Skyllas-Kazacos, M.Chemical Modification and Electrochemical Behavior of Graphite Fiber in Acidic Vanadium Solution. Electrochim. Acta, 1991, 36:513-517) modified Te on the electrode surface 4+ , Mn 2+ 、Ir 3+ 、In 3+ etc., found Ir 3+ It is the most effective for improving the electrocatalytic activity of electrode materials, but due to the high price of iridium, it is not suitable for large-scale applications
The Chinese patent application document (publication number CN104518221A) published on April 15, 2015 discloses that an electrocatalyst containing Bi is modified on the surface of the electrode, but due to the extremely weak radioactivity of Bi, it is not conducive to wide application

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

Embodiment 1

[0031] The configuration composition is 0.5M Na 2 MoO 4 +6.0M HNO 3 Place a graphite felt of a certain size in the impregnating solution so that it is completely immersed in the solution and ultrasonically disperse for 20 minutes. Take it out after heating in a water bath at 80°C for 0.5h. Dry under vacuum at 60°C for 2h. Then the dried graphite felt was placed in a tube furnace, protected by argon, heated to 450° C., and reacted at a constant temperature for 1 h. After cooling to room temperature, molybdenum trioxide-modified graphite felt can be obtained, and the mass ratio of molybdenum trioxide loading is determined to be 0.5% by weighing.

Embodiment 2

[0033] The configuration concentration is 1.0M (NH 4 ) 2 MoO 4 +8.0M HNO 3 solution, place a graphite felt of a certain size in the solution, make it completely immersed in the solution, and ultrasonically disperse for 15 minutes. Take it out after heating in a water bath at 80°C for 1h. Dry at 60°C for 2h under vacuum. Then the dried graphite felt was placed in a tube furnace, protected by helium, at a temperature of 550° C., and reacted at a constant temperature for 2 hours. After cooling to room temperature, molybdenum trioxide-modified graphite felt can be obtained, and the mass ratio of molybdenum trioxide loading is determined to be 1.0% by weighing.

Embodiment 3

[0035] The configuration concentration is 1.0M ZnMoO 4 +5.0M HNO 3 solution, place a graphite felt of a certain size in the solution, make it completely immersed in the solution, and disperse it ultrasonically for 20 minutes. Heat it in a water bath at 80°C for 2.5h and take it out. Dry at 60°C for 2h under vacuum. Then the dried graphite felt was placed in a tube furnace, protected by nitrogen gas, at a temperature of 500° C., and reacted at a constant temperature for 1 h. After cooling to room temperature, molybdenum trioxide-modified graphite felt can be obtained, and the mass ratio of molybdenum trioxide loading is determined to be 2% by weighing.

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
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing an all-vanadium-redox-flow-battery electrode material. The method includes the following steps that a carbon base material is soaked into an acid solution containing molybdate anions and fully dispersed; heating is carried out; the carbon base material is taken out and dried in the vacuum or inert atmosphere; the dried carbon base material is put in the inert atmosphere and subjected to an isothermal reaction, and the all-vanadium-redox-flow-battery electrode material with the surface modified with molybdenum trioxide is obtained. The all-vanadium-redox-flow-battery electrode material comprises the carbon base material and an electrocatalyst which is combined on the surface of the carbon base material and contains the molybdenum trioxide. According to method, as the electrocatalyst containing the molybdenum trioxide is arranged on the surface of the carbon base material for modification, the carbon base material has the high catalytic activity, the electro-catalysis activity of the electrode material is improved, electrochemical polarization is reduced, and the voltage efficiency and the energy efficiency of a vanadium battery are improved; the method is simple, and the cost is low.

Description

technical field [0001] The invention belongs to the field of liquid flow energy storage vanadium batteries, and in particular relates to an electrode material for an all-vanadium redox flow battery and a preparation method thereof. Background technique [0002] In recent years, wind energy and solar energy have been widely developed and utilized, but the proportion of abandoned wind and solar energy continues to increase. In order to utilize wind energy and solar energy more efficiently, there is an increasingly strong demand for large-scale energy storage devices. Due to its independent output power and capacity, vanadium battery has the advantages of large power and capacity, long cycle life, high energy efficiency, good deep charge and discharge performance, and high safety performance. Therefore, it is considered to be one of the most promising large batteries. Large-scale energy storage batteries are attracting more and more attention. [0003] As the key material of ...

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
IPC IPC(8): H01M4/88H01M4/86H01M4/96H01M8/18
CPCH01M4/8647H01M4/8842H01M4/9016H01M4/96H01M8/188Y02E60/50
Inventor 陈勇
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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