A kind of negative electrode active material for lithium ion/sodium ion battery, negative electrode and battery

A negative electrode active material and sodium-ion battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of low initial Coulombic efficiency, small difference between charge and discharge voltage platforms, and insufficient capacity

Active Publication Date: 2017-07-07
HUAZHONG UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the invention provides a negative electrode active material, a negative electrode and a battery for a lithium ion / sodium ion secondary battery. The discharge voltage platform with small difference and moderate voltage platform is suitable for the negative electrode of lithium ion battery and sodium ion battery, and provides lithium ion battery and sodium ion battery including this kind of negative electrode, thus solving the problem of current lithium ion battery and sodium ion battery The negative electrode has technical problems of insufficient capacity or relatively low initial Coulombic efficiency

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 kind of negative electrode active material for lithium ion/sodium ion battery, negative electrode and battery
  • A kind of negative electrode active material for lithium ion/sodium ion battery, negative electrode and battery
  • A kind of negative electrode active material for lithium ion/sodium ion battery, negative electrode and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0070] The lithium-ion / sodium-ion secondary battery negative electrode active material provided by the present invention is a material with diverse components, which mainly includes one or more of the following four types of materials:

[0071] (1) phosphorus germanium compound;

[0072] (2) the first complex;

[0073] (3) the second compound;

[0074] (4) the third compound;

[0075] Phosph...

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

A negative electrode active material for a lithium-ion / sodium-ion secondary battery, a negative electrode and a battery relate to the technical field of electrochemistry and batteries. The negative electrode active material comprises a phosphorus-germanium compound, or / and a first complex formed by the phosphorus-germanium compound and elementary P or / and elementary Ge, or / and a second complex formed by the phosphorus-germanium compound and conductive components, or / and a third complex formed by the first complex and conductive components. The negative electrode has the advantages of high specific capacity, high initial Coulomb efficiency, small charge-discharge voltage platform difference and good high-current charge-discharge performance.

Description

technical field [0001] The invention belongs to the field of electrochemistry and battery technology, and more specifically relates to a negative electrode active material for a lithium ion / sodium ion battery, a negative electrode and a battery. Background technique [0002] Compared with nickel metal hydride, nickel cadmium and other batteries, lithium ion batteries have the characteristics of high voltage, high capacity and small weight. Therefore, in recent years, lithium secondary batteries have been widely used as main power sources for mobile communication devices, portable electronic devices, electric bicycles, electric two-wheeled vehicles, electric vehicles, and the like. However, with the rapid development of communications, electric vehicles, electronic equipment, and space technology, the performance of batteries has become increasingly demanding. It has become an important task to find new energy storage systems to overcome traditional fuel energy storage system...

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): H01M4/58H01M4/62H01M4/136H01M10/0525H01M10/054
CPCH01M4/362H01M4/38H01M4/5805H01M4/624H01M10/0525H01M10/054H01M4/58Y02E60/10
Inventor 李会巧李文武翟天佑
Owner HUAZHONG UNIV OF SCI & 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