Horizontal three-electrode electrochemical rechargeable zinc-air battery

A zinc-air battery and three-electrode technology, applied in the field of electrochemical power supply, can solve the problems such as hindering the development of zinc-air battery technology, reducing the performance of air electrodes, technical and technological difficulties, etc., so as to avoid corrosion and physical structure damage, inhibit zinc electrodes Deformation, good sealing effect

Inactive Publication Date: 2015-11-25
TSINGHUA UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the battery is charged, the new ecological active oxygen generated on the air electrode has a high oxidation activity and tends to react with the catalyst of the oxygen reduction reaction and other electrode materials, resulting in the deterioration of the electrode performance
At the same time, the new ecological active oxygen combines into oxygen molecules and overflows from the electrolyte, and the volume changes significantly, which often makes the structure of the air electrode loose and significantly reduces the performance of the air electrode, resulting in attenuation of battery life.
The use of an air electrode with dual catalytic functions requires that the air electrode has the ability to catalyze oxygen evolution reaction and oxygen reduction reaction at the same time, as well as a channel for completing oxygen gas diffusion and electrolyte communication, and it is also necessary to prevent electrolyte leakage. In terms of technology and process It becomes very difficult, which seriously hinders the development of zinc-air battery technology

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
  • Horizontal three-electrode electrochemical rechargeable zinc-air battery
  • Horizontal three-electrode electrochemical rechargeable zinc-air battery
  • Horizontal three-electrode electrochemical rechargeable zinc-air battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a horizontal three-electrode electrochemical rechargeable zinc-air battery, the battery is an electrochemical rechargeable zinc-air battery, including oxygen evolution electrode 5, zinc electrode 6, oxygen reduction electrode 11 and battery components, battery components It includes an upper end plate 1, a gasket 4, an electrode module 7 and a lower end plate 12; the oxygen evolution electrode 5, the zinc electrode 6 and the oxygen reduction electrode 11 are installed horizontally, and they are assembled together using battery components. When charging, the zinc electrode 6 and the The oxygen evolution electrode 5 forms a working circuit, and the zinc electrode 6 and the oxygen reduction electrode 11 form a working circuit during discharge. The oxygen evolution electrode has the ability to catalyze the oxygen evolution reaction, and the oxygen evolution reaction occurs on the electrode when the battery is charged; the oxygen reduction electrod...

Embodiment 2

[0032] The battery assembly and structure are basically the same as in Example 1, further defined as oxygen evolution electrodes, zinc electrodes, and oxygen reduction electrodes parallel to each other and installed parallel to the horizontal plane. A manganese-based catalyst is supported by nickel mesh, and the current collector of the zinc negative electrode 6 is copper foam, which is assembled into a battery for charge-discharge cycle. The charging time of each cycle is 1h, the discharging time is 50min, and the charging and discharging current density is 10mA / cm 2 , a single charge-discharge process curve is shown in figure 2 , where the charging time is 1h, the discharging time is 50min, and the charging and discharging current density is 10mA / cm 2 ; 100 charge-discharge cycle curves see image 3 , where the charge time of each cycle is 1h, the discharge time is 50min, and the charge and discharge current density is 10mA / cm 2 .

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
sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a horizontal three-electrode electrochemical rechargeable zinc-air battery, belonging to the technical field of an electrochemical power supply. The battery comprises an oxygen precipitation electrode, a zinc electrode and a battery module and also comprises an oxygen reduction electrode, wherein the oxygen precipitation electrode, the zinc electrode and the oxygen reduction electrode are all horizontally arranged and assembled together by using the battery module, the zinc electrode and the oxygen precipitation electrode form a working loop during charging, and the zinc electrode and the oxygen reduction electrode form a working loop during discharging. The structure disclosed by the invention is favorable for battery sealing, the gravity effect during the charging and discharging process is eliminated, and zinc dendrite generation and zinc electrode deformation are prevented; by using a three-electrode system, the corrosion of oxygen generated during charging of a two-electrode system to an air electrode and the damage to a physical structure are avoided, and the cycle life of the battery is prolonged; and the horizontally-arranged electrodes are immersed in an electrolyte, thus, an oxygen diffusion channel built on the oxygen precipitation electrode is prevented, the electrode structure is greatly simplified, and the electrode fabrication and amplification is promoted.

Description

technical field [0001] The invention belongs to the technical field of electrochemical power sources, in particular to a horizontal three-electrode electrochemical rechargeable zinc-air battery. Background technique [0002] Zinc-air battery (Metal-Air Battery) is one of the important technical directions for efficient conversion and large-scale storage of electric energy. The battery utilizes oxygen in the air as the positive electrode electrochemical reaction active material, and metal zinc as the negative electrode electrochemical reaction active material. During the operation of the battery, the metal electrode is dissolved or deposited, and the discharge product is dissolved in the alkaline electrolyte; the oxygen in the air is used to perform oxygen reduction (ORR) or oxygen evolution (OER) electrochemical reaction on the air electrode to complete the electrical energy and Chemical energy can be converted into each other. The theoretical voltage of a single cell of a...

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 Applications(China)
IPC IPC(8): H01M12/08
CPCH01M12/08Y02E60/10
Inventor 王保国洪为臣马洪运雷青
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap