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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 11679992 B1

PDFFull Text
Date of Patent:
Jun. 20, 2023

Filed:

Jun. 11, 2019

Methods for preparing particle precursor, and particle precursor prepared thereby

Applicant:

Microvast Power Systems Co., Ltd., Huzhou, CN;

Inventors:

Bryan Yonemoto, Clearwater, FL (US);

Xiao Zhang, Huzhou, CN;

Assignee:

MICROVAST POWER SYSTEMS CO., LTD., Huzhou, CN;

Attorney:

Cheng-Ju Chiang

Primary Examiner:

James A Fiorito

Int. Cl.
CPC ...
C01G 53/00 (2006.01); B01J 4/00 (2006.01); C01G 53/06 (2006.01); H01M 4/04 (2006.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/525 (2010.01); B01J 19/00 (2006.01); H01M 4/139 (2010.01); H01M 4/13 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
C01G 53/006 (2013.01); B01J 4/008 (2013.01); B01J 19/0086 (2013.01); C01G 53/06 (2013.01); H01M 4/0497 (2013.01); H01M 4/13 (2013.01); H01M 4/131 (2013.01); H01M 4/139 (2013.01); H01M 4/1391 (2013.01); H01M 4/525 (2013.01); B01J 2204/002 (2013.01); B01J 2219/00177 (2013.01); B01J 2219/00186 (2013.01); C01P 2002/52 (2013.01); C01P 2004/03 (2013.01); C01P 2004/84 (2013.01); C01P 2006/40 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01);
Abstract

The invention relates to a method for preparing core-shell structured particle precursor under a co-precipitation reaction. In this method, by controlling the feeding of different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a precipitated particle slurry, filtering, and drying the precipitated particle slurry to yield the particle precursor. The invention also provides a particle precursor which includes a core-shell structure. The shell is made of gradient anions and/or cations. Such particle precursor can be used to prepare cathode of lithium-ion battery.

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