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

Novel secondary battery and preparation method thereof

A secondary battery, a new type of technology, applied in secondary batteries, electrolyte battery manufacturing, battery electrodes and other directions, can solve the problems of complex preparation process, limited types of positive electrode materials, and unsatisfactory electrochemical performance of sodium ion batteries.

Inactive Publication Date: 2021-02-23
SHENZHEN INST OF ADVANCED TECH
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the types of positive electrode materials developed based on sodium-ion batteries are very limited, and the research is basically limited to half-cells of sodium sheets. The electrochemical performance of sodium-ion batteries based on developed materials is not very ideal, and the preparation process is relatively complicated.

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
  • Novel secondary battery and preparation method thereof
  • Novel secondary battery and preparation method thereof
  • Novel secondary battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1: Based on Na 2 co 2 (C 2 o 4 ) 3 2H 2 Sodium-ion half-cell with O positive electrode

[0064] Preparation of the negative electrode of the battery: roll the sodium metal on the aluminum foil (ie, the negative current collector) to form a foil, and cut the obtained sodium-aluminum composite foil into a disc with a diameter of 12mm, which is used as the negative electrode of the battery.

[0065] Preparation of the separator: the glass fiber film was cut into discs with a diameter of 16 mm and used as a separator for later use.

[0066] Preparation of electrolyte solution: Weigh 0.6122g of sodium perchlorate and add it to 10ml of propylene carbonate solvent, stir until sodium perchlorate is completely dissolved, then add 3% fluoroethylene carbonate as an additive, stir well and use as Electrolyte spare.

[0067] Preparation of battery positive electrode: 0.8g Na 2 co 2 (C 2 o 4 ) 3 2H 2 O crystal powder, 0.1g conductive agent carbon black, 0.1g b...

Embodiment 2-25

[0071] Embodiment 2-25: Based on Na 2 m 2 (C 2 o 4 ) 3 2H 2 Na-ion full battery with O(M=Co,Ni,Mn) cathode

[0072] Prepare the negative electrode of the battery: add the negative electrode active material, the negative electrode conductive agent, and the negative electrode binder according to a certain ratio (see Table 1) into 2ml of nitrogen methyl pyrrolidone solution, grind sufficiently to obtain a uniform slurry; then coat the slurry evenly on the surface of the negative electrode collector and vacuum-dried. The electrode sheets obtained by drying were cut into discs with a diameter of 10 mm, which were compacted and used as battery negative electrodes for future use.

[0073] Preparation of the separator: the glass fiber film was cut into discs with a diameter of 16 mm and used as a separator for later use.

[0074] Preparation of electrolyte: Weigh a certain amount of electrolyte salt and add it to a certain amount of organic solvent, stir until the electrolyte s...

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
Diameteraaaaaaaaaa
Discharge capacityaaaaaaaaaa
Login to View More

Abstract

The invention provides a novel secondary battery which comprises a negative electrode current collector layer, a negative electrode active material layer, an electrolyte solution, a positive electrodeactive material layer and a positive electrode current collector layer which are arranged in sequence, a diaphragm is arranged in the electrolyte solution, the electrolyte solution comprises an electrolyte, the electrolyte is an electrolyte sodium salt, the positive electrode active material layer comprises a positive electrode active material, and the positive electrode active material layer isa Na2M2(C2O4)3.2H2O material capable of allowing free intercalation and deintercalation of sodium ions, and M is at least one of Co, Ni and Mn. The novel secondary battery provided by the invention does not contain a lithium material and is not restricted by lithium resources, so that the battery can be developed for a long time, and the production cost is remarkably reduced. Compared with an existing sodium-ion battery, the novel secondary battery has the advantages of excellent electrochemical performance, long service life, high capacity retention ratio, relatively high capacity, and simple, easily obtainable and environmental friendly anode and cathode materials, so that the whole battery is simple in production process and low in cost.

Description

technical field [0001] The invention relates to the technical field of new energy batteries, in particular to a novel secondary battery. Background technique [0002] A secondary battery, also known as a rechargeable battery, is a battery that can be recharged and discharged multiple times. Compared with non-reusable primary batteries, secondary batteries have the advantages of low cost and high resource utilization. At present, the main secondary battery technologies include lead-acid batteries, nickel-chromium batteries, nickel-metal hydride batteries, and lithium-ion batteries. Among them, lithium-ion batteries are the most widely used. However, lithium-ion batteries are facing the current situation of limited reserves of lithium resources and increasing costs. As a potential energy storage technology to replace lithium-ion batteries, sodium-ion batteries have attracted increasing attention in recent years. The abundance of sodium in the earth's crust is about 1000 ti...

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): H01M10/054H01M4/58H01M10/058H01M10/0567
CPCH01M4/5825H01M10/054H01M10/0567H01M10/058Y02E60/10Y02P70/50
Inventor 唐永炳蔡菁华姚文娇
Owner SHENZHEN INST OF ADVANCED TECH
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