Unlock instant, AI-driven research and patent intelligence for your innovation.

Metallic sodium porous carbon composite material, preparation method thereof and battery

A technology of porous carbon material and composite material, applied in the field of metal sodium porous carbon composite material and its preparation, can solve the problems of short circuit, affecting the safety of battery use, dendrite piercing the separator, etc., to avoid dendrite, improve charging efficiency and Safe to use, easy to embed and remove

Inactive Publication Date: 2021-06-25
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when sodium metal is simply used as the negative electrode of the battery, sodium ions are easily deposited on the negative electrode of the battery to form dendrites during the charging process of the battery. In severe cases, the dendrites will pierce the separator and cause a short circuit, affecting the safety of the battery.

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
  • Metallic sodium porous carbon composite material, preparation method thereof and battery
  • Metallic sodium porous carbon composite material, preparation method thereof and battery
  • Metallic sodium porous carbon composite material, preparation method thereof and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0028] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood...

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 relates to a metallic sodium porous carbon composite material, a preparation method thereof and a battery. The metallic sodium porous carbon composite material is obtained by mixing a porous carbon material with metallic sodium in a molten state and cooling the mixture to a preset temperature. The sodium in a molten state has a relatively good infiltration effect on the porous carbon, so that the metal sodium can be embedded in the porous structure of the porous carbon material framework to form the metal sodium porous carbon composite material. And the size of the porous structure of the carbon material framework of the metal sodium porous carbon composite material obtained by the method is far larger than that of sodium ions, so that the sodium ions can be conveniently embedded into and separated from a battery negative electrode, dendritic crystals are prevented from being formed on the battery negative electrode, and the charging efficiency and the use safety of a battery are further improved.

Description

technical field [0001] The present disclosure relates to the field of battery technology, and in particular to a metal sodium porous carbon composite material, a preparation method thereof, and a battery. Background technique [0002] Sodium is one of the most abundant elements on the earth. When it is applied to batteries, its energy storage mechanism is similar to that of lithium-ion batteries. Compared with lithium-ion batteries, sodium-ion batteries have many advantages such as low cost and good safety. The use of metallic sodium as the negative electrode material can not only provide sufficient sodium ions, avoid the loss of sodium in the positive electrode material, but also increase the energy density of the battery, thereby increasing the working voltage of the battery. [0003] However, when sodium metal is simply used as the negative electrode of the battery, sodium ions are easily deposited on the negative electrode of the battery to form dendrites during the char...

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): H01M4/36H01M4/38H01M4/62H01M10/054
CPCH01M4/381H01M4/625H01M4/362H01M10/054H01M2004/027Y02E60/10
Inventor 李光胤
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD