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

Composite zinc-air secondary battery capable of being used in oxygen-free environment and capable of being self-charged in aerobic environment

A secondary battery, zinc-air technology, applied in fuel cell type half cells and primary cell type half cells, electrical components, battery electrodes, etc., can solve the problems of limited electric energy, poor conductivity, low redox potential, etc. , to achieve the effect of extending the range of use

Pending Publication Date: 2022-03-18
UNIV OF SCI & TECH OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of ferric ions as the positive electrode active material can catalyze the zinc-air battery reaction when operating in an air environment, and it can undergo a reduction reaction to generate ferrous ions under anaerobic conditions, but due to poor conductivity and its own polarity Low redox potential, the output voltage is only 1.0V and 0.3V under aerobic and anaerobic conditions, and the output power is extremely limited

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
  • Composite zinc-air secondary battery capable of being used in oxygen-free environment and capable of being self-charged in aerobic environment
  • Composite zinc-air secondary battery capable of being used in oxygen-free environment and capable of being self-charged in aerobic environment
  • Composite zinc-air secondary battery capable of being used in oxygen-free environment and capable of being self-charged in aerobic environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composite zinc-air secondary battery of this embodiment is composed of negative pole, alkaline electrolyte and positive pole, wherein the negative pole is a zinc plate with a purity of more than 99% and a thickness of 0.1 mm; the alkaline electrolyte is prepared from potassium hydroxide, zinc acetate and water The concentration of potassium hydroxide is 6mol / L, and the concentration of zinc acetate is 0.2mol / L; the positive electrode is an air electrode, which is prepared by hot pressing of waterproof and breathable membrane, current collector layer and positive electrode material; the waterproof and breathable membrane is polytetrafluoroethylene Vinyl film with a thickness of 100 μm and a pore size of 0.1 μm; the current collector layer is a nickel foam plate.

[0032] The making of positive electrode material: 2.1mg purity 99.9%, copper oxide (CuO) nanopowder of average particle diameter 40nm, 0.6mg gac, 0.3mg polytetrafluoroethylene nanopowder (binder) of average ...

Embodiment 2

[0036] The composite zinc-air secondary battery of this embodiment is composed of negative pole, alkaline electrolyte and positive pole, wherein the negative pole is a zinc plate with a purity of more than 99% and a thickness of 0.1 mm; the alkaline electrolyte is prepared from potassium hydroxide, zinc acetate and water The concentration of potassium hydroxide is 6mol / L, and the concentration of zinc acetate is 0.2mol / L; the positive electrode is an air electrode, which is prepared by hot pressing of waterproof and breathable membrane, current collector layer and positive electrode material; the waterproof and breathable membrane is polytetrafluoroethylene Vinyl film with a thickness of 100 μm and a pore size of 0.1 μm; the current collector layer is a nickel foam plate.

[0037] Preparation of positive electrode material: 1 mg of copper oxide (CuO) nanopowder with a purity of 99.9% and an average particle size of 40 nm, 10 mg of acetylene black, and 10 mg of polytetrafluoroet...

Embodiment 3

[0040] The composite zinc-air secondary battery of this embodiment is composed of negative pole, alkaline electrolyte and positive pole, wherein the negative pole is a zinc plate with a purity of more than 99% and a thickness of 0.1 mm; the alkaline electrolyte is prepared from potassium hydroxide, zinc acetate and water The concentration of potassium hydroxide is 6mol / L, and the concentration of zinc acetate is 0.2mol / L; the positive electrode is an air electrode, which is prepared by hot pressing of waterproof and breathable membrane, current collector layer and positive electrode material; the waterproof and breathable membrane is polytetrafluoroethylene Vinyl film with a thickness of 200 μm and a pore size of 1 μm; the current collector layer is a nickel foam plate.

[0041] The making of positive electrode material: 5mg purity 99.9%, copper oxide (CuO) nano-powder of average particle diameter 40nm, 0.125mg carbon nanotube, 0.125mg polytetrafluoroethylene nano-powder (bindi...

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
thicknessaaaaaaaaaa
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of batteries, in particular to a composite zinc air secondary battery which can be used in an oxygen-free environment and can be self-charged in an aerobic environment. A mixture of a copper-based oxide, conductive carbon powder and a binder is used as a positive electrode material, and the positive electrode material, a waterproof breathable film and a current collector layer are subjected to hot pressing to prepare the positive electrode of the composite zinc-air secondary battery. The positive electrode of the zinc-air battery is improved by adopting a proper electrode material, the concept of a composite zinc-air battery capable of operating in an oxygen-free environment is provided, the zinc-air battery and a zinc-copper battery are integrated into one battery, the problem that a traditional zinc-air battery cannot operate in the oxygen-free environment is solved, and the service life of the zinc-air battery is prolonged. And the application range of the zinc-air battery is expanded.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a composite zinc-air secondary battery which can be used in an oxygen-free environment and can be self-charged in an oxygen environment. Background technique [0002] Zinc-air batteries have attracted extensive research attention due to their low price, high safety, and ultra-high capacity. As a reactant at the positive electrode in a zinc-air battery, oxygen is essential for the proper functioning of the battery. Although air can provide a steady stream of reactive substances for the positive electrode, which brings the advantages of high energy density, it also greatly restricts the application range of the battery: as an open system, the battery can only operate in an oxygen-containing atmosphere; In an oxygen environment, the battery will quickly fail. Even if the battery uses a waterproof and breathable membrane, it is limited to preventing the entry of water, and the lo...

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): H01M12/06H01M4/02H01M4/62H01M4/86
CPCH01M12/06H01M4/86H01M4/02H01M4/625H01M4/621H01M2004/028Y02E60/10
Inventor 谈鹏尚文旭俞文涛马彦义赵忠喜
Owner UNIV OF SCI & TECH OF CHINA
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