The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 24, 2023

Filed:

Mar. 11, 2020
Applicant:

Ningde Amperex Technology Limited, Ningde, CN;

Inventors:

Pengyang Feng, Ningde, CN;

Jiali Dong, Ningde, CN;

Jia Tang, Ningde, CN;

Yuansen Xie, Ningde, CN;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/583 (2010.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01);
U.S. Cl.
CPC ...
H01M 4/583 (2013.01); H01M 4/366 (2013.01); H01M 4/623 (2013.01); H01M 4/663 (2013.01); H01M 4/667 (2013.01);
Abstract

An anode material having 0.8≤0.06×(Dv50)−2.5×Dv50+Dv99≤12 (1); and 1.2≤0.2×Dv50−0.006×(Dv50)+BET≤5 (2), where Dv50 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 50% of the particles, Dv99 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 99% of the particles, and BET is a specific surface area of the anode material, wherein Dv50 and Dv99 are expressed in μm and BET is expressed in m/g. The anode material is capable of significantly improving the rate performance of electrochemical devices.


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