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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.

Patent No.:

US 11936045 B1

PDFFull Text
Date of Patent:
Mar. 19, 2024

Filed:

Feb. 23, 2023

Negative active material, electrochemical device that uses same, and electronic device

Applicant:

Ningde Amperex Technology Limited, Fujian, CN;

Inventors:

Lihong He, Ningde, CN;

Jia Tang, Ningde, CN;

Jiali Dong, Ningde, CN;

Yuansen Xie, Ningde, CN;

Assignee:

Ningde Amperex Technology Limited, Ningde, CN;

Attorney:

Maier & Maier, PLLC

Primary Examiner:

Cynthia K Walls

Int. Cl.
CPC ...
H01M 4/587 (2010.01); C01B 32/20 (2017.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/587 (2013.01); C01B 32/20 (2017.08); C01P 2002/74 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract

A negative active material includes a carbon material. The carbon material satisfies the following relationship: 6<Gr/K<16, Gr is a graphitization degree of the carbon material, measured by means of X-ray diffraction; and K is a ratio Id/Ig of a peak intensity Id of the carbon material at a wavenumber of 1250 cmto 1650 cmto a peak intensity Ig of the carbon material at a wavenumber of 1500 cmto 1650 cm, and is measured by using Raman spectroscopy, and K is 0.06 to 0.15. The negative active material according to this application can significantly improve an energy density, cycle performance, and rate performance of the electrochemical device.

Find Patent Forward Citations

He, Lihong. (2024). Negative active material, electrochemical device that uses same, and electronic device (U.S. Patent No. 11936045). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11936045

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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