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

Anode materials and methods of making same

A kind of anode material and anode technology, applied in the direction of negative electrode, battery electrode, active material electrode, etc., can solve the problems of performance deterioration, battery pack capacity and cycle efficiency decline, etc.

Pending Publication Date: 2022-06-21
TALGA TECH LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the capacity and cycle efficiency of the battery pack decrease, and this leads to poor performance (Final Technical Report: Internal Short Circuits in Lithium-Ion Cells for PHEVs” Sriramulu & Stringfellow, 2014)

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
  • Anode materials and methods of making same
  • Anode materials and methods of making same
  • Anode materials and methods of making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0111] As mentioned above, the present invention still further provides a method of making an anode material, the method comprising grinding a graphite material to produce ground primary graphite particles, wherein those ground primary graphite particles are processed in a manner to produce substantially spheroids having approximately spheroids in the form of secondary graphite particles.

[0112] Table A below provides examples of suitable ground primary graphite particles for use / use in the method of the present invention, while Table B provides their elemental analysis. Table A

[0113]

[0114] Form B

[0115] C Al Ca Cu Fe K Mg Mn Si S element >99.9％ 3.3 7.4 7.3 26.7 5.7 2.9 0.2 <0.1

37 ppm

[0116] The ground primary graphite particles are spheroidized and coated with a carbon-based material, and they are then pyrolyzed to produce secondary particles that approximate oblate spheroids. The carbon-based material is on...

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
Compressed densityaaaaaaaaaa
Login to View More

Abstract

An anode material comprising secondary graphite particles having predominantly in the form of approximately oblate spheroids and having a D50 of less than about 5 microns.

Description

technical field [0001] The present invention relates to an anode material. More particularly, the anode materials of the present invention are intended for use as anode materials in lithium-ion batteries. [0002] In a highly preferred form, the anode material of the present invention comprises a substantially spheroid form having a D of less than about 5 microns 50 of secondary graphite particles. [0003] The invention further relates to a method of manufacturing an anode material. Background technique [0004] Lithium-ion battery anode materials utilizing graphite materials are known to limit battery performance at low temperatures. This is largely believed to be due to lithium electroplating and solid electrolyte interface (SEI, solid electrolyte interphase) degradation issues. That is, low temperatures can cause deposits of lithium metal to form in the battery pack, causing internal short circuits, which can lead to fires in the battery. [0005] It is understood t...

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): H01M4/133H01M4/1393H01M10/052
CPCH01M10/052H01M4/133H01M4/1393H01M2004/021H01M2004/027H01M4/622Y02E60/10H01M4/583C01B32/20C01P2004/20C01P2004/61C01P2006/11C01P2006/12C01P2006/40C01B32/21C01P2002/72C01P2004/03C01P2004/32C01P2004/50C01P2004/84H01M4/587
Inventor C.加皮格利亚
Owner TALGA TECH LTD