A metal/ion filter layer, its preparation method and its application in batteries

A filter layer and metal technology, applied in the direction of battery electrodes, lithium batteries, electrode carriers/collectors, etc., can solve the problems of reduced Coulombic efficiency, battery short circuit, loss, etc., and achieve increased Coulombic efficiency, cost savings, and cheap prices Effect

Active Publication Date: 2021-05-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, both Li metal and Na metal suffer from dendrites and loss during charge-discharge cycles
Dendrites can puncture the separator, shorting the battery and causing a fire
Lithium metal and sodium metal will cause a decrease in Coulombic efficiency in each cycle of charging and discharging.
Nowadays, such as patent CN201610319583.3 and patent CN 201610252135.6, it is proposed to use a support structure or a skeleton structure as a stable body to protect the metal negative electrode without a body. Although the problem of metal volume expansion is solved, there is no ion / metal protective layer on the surface of the support structure Or the filter layer, which cannot prevent the side reaction between the metal and the electrolyte, which will cause the loss of the metal and the reduction of the coulombic efficiency 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
  • A metal/ion filter layer, its preparation method and its application in batteries
  • A metal/ion filter layer, its preparation method and its application in batteries
  • A metal/ion filter layer, its preparation method and its application in batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reactor and heated to 180° C. for 8 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

Embodiment 2

[0102] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reactor and heated to 150° C. for 8 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

Embodiment 3

[0104] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reaction kettle and heated to 180° C. for 12 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

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 present application discloses a metal / ion filter layer applicable to batteries, and the metal / ion filter layer is a multi-layer stacked material. The ion / metal filter layer can increase the overpotential of metal deposition, filter and integrate ions and metals, and isolate fresh metal from contacting with the electrolyte to produce side reactions. Metal will only be deposited on the surface of the support structure, not on the surface of the ion / metal filter layer deposition.

Description

technical field [0001] The application relates to a metal / ion filter layer, its preparation method and its application in batteries, belonging to the field of batteries. Background technique [0002] As early as 1992, before Sony Corporation of Japan launched the world's first lithium-ion battery, in 1958, a graduate student at the University of California proposed the idea of ​​lithium, sodium and other active metals as battery negative electrodes. research on metal batteries. Since the science and technology at that time could not solve the safety problem of metal batteries, scientists began to pay more attention to the research of lithium-ion batteries with better safety performance. Nowadays, lithium-ion batteries are widely used in various portable electronic devices and new energy vehicles. However, lithium-ion batteries are limited by the research and development bottleneck of graphite negative electrode specific capacity, and cannot meet the needs of people to devel...

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 Patents(China)
IPC IPC(8): H01M4/134H01M4/1395H01M4/66H01M10/052
CPCH01M4/134H01M4/1395H01M4/661H01M4/663H01M4/667H01M10/052Y02E60/10
Inventor 任飞鸿彭哲王木钦林欢李振东王德宇
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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