Sodium-based double ion battery and preparation method thereof

A dual-ion, sodium-ion technology, applied in the manufacture of electrolyte batteries, secondary batteries, non-aqueous electrolyte batteries, etc., can solve the problems of poor performance of sodium-based dual-ion batteries, and achieve the effect of being conducive to charge transfer and good specific capacity

Pending Publication Date: 2019-11-15
GUANGDONG UNIV OF TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a sodium-based double-ion battery and its pre

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
  • Sodium-based double ion battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0055] The present invention also provides a method for preparing a sodium-based dual-ion battery as described above, which includes the following steps:

[0056] Under the protection of inert gas, stack the positive electrode, the separator and the negative electrode in sequence, and drip the electrolyte to make the separator completely wet;

[0057] The stacked positive electrode, separator, and negative electrode are packaged in a battery case to prepare a sodium-based dual-ion battery.

[0058] In a preferred embodiment of the present invention, the preparation method of the sodium-based dual-ion battery specifically includes the following steps:

[0059] 1) Preparation of negative electrode:

[0060] The conductive agent, the binder, and the negative electrode active material are ground, then rolled into a sheet and coated on a foamed metal material of a desired size, compacted and dried in a vacuum to obtain a negative electrode.

[0061] 2) Preparation of the diaphragm:

[0062] Cu...

Example Embodiment

[0072] Example 1

[0073] This Example 1 passed a sodium-based dual-ion battery, including a negative electrode, a separator, an electrolyte and a positive electrode.

[0074] The specific material composition and preparation method of the sodium-based dual-ion battery are as follows:

[0075] 1) Preparation of negative electrode: 1g vanadium disulfide, 0.5g conductive carbon black and 0.17g polytetrafluoroethylene aqueous dispersion are fully ground, then rolled into pieces, and then coated on foam nickel with a diameter of 12mm, after compaction And vacuum dry, as a negative electrode for later use.

[0076] 2) Preparation of the diaphragm: The glass fiber diaphragm is cut into a disc with a diameter of 19 mm, which is used as a diaphragm for use after drying.

[0077] 3) Prepare electrolyte: mix ethylene carbonate, dimethyl carbonate and dimethyl carbonate in a volume ratio of 1:1:1, add sodium perchlorate and fluoroethylene carbonate to control the concentration of sodium perchlora...

Example Embodiment

[0080] Example 2

[0081] This embodiment provides a sodium-based dual-ion battery, in which vanadium tetrasulfide is used as the negative electrode active material, and the others are the same as in Embodiment 1.

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 invention discloses a sodium-based double ion battery and a preparation method thereof. The sodium-based double ion battery comprises a positive electrode, a negative electrode, and a diaphragm and electrolyte solution between the positive electrode and the negative electrode. The negative electrode comprises a negative electrode active material for reversibly accommodating cations. The negative electrode active material is a two-dimensional material. The cations are sodium ions, and the electrolyte solution is solution containing sodium ions. The sodium-based double-ion battery provided by the invention uses a two-dimensional material as a negative electrode active material. The two-dimensional material provides a loosely stacked frame of which the distance between layers is far larger than the ion diameter of the sodium ions. The large open channels between layers provide potential sites for the intercalation and de-intercalation of alkali metals, and have metal properties conducive to the transfer of charges. Therefore, the sodium-based double ion battery provided by the invention has good specific capacity, energy density, power density and cycle life.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a sodium-based double-ion battery and a preparation method thereof. Background technique [0002] Dual-ion batteries (DIBs) have attracted increasing attention in the field of electrical energy storage devices. The electrical energy storage of such an electrical energy storage device is based on the storage of anions at the positive electrode and the storage of cations at the negative electrode, respectively. In addition to the positive and negative electrodes, the electrolyte is also an important part of the dual-ion battery. Among the large cation families, lithium is the lightest charge carrier in nonaqueous electrolyte systems. However, lithium reserves are limited globally. Therefore, sodium, which has similar physical and chemical properties to lithium and is abundant in reserves, has attracted more and more attention as an alternative. [0003] However, in the existi...

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): H01M10/054H01M10/058
CPCH01M10/054H01M10/058Y02E60/10Y02P70/50
Inventor 郑程陈耀武郭祝简邦权邓兴荣凌绍滔
Owner GUANGDONG UNIV OF TECH
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