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.:
Date of Patent:
Mar. 03, 2026
Filed:
Feb. 05, 2019
Applicant:
Umicore, Brussels, BE;
Inventors:
Assignee:
Umicore, Brussels, BE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/38 (2006.01); H01M 4/134 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/386 (2013.01); H01M 4/134 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract
A silicon-based powder for use in the negative electrode of a battery comprises silicon-based particles. The silicon-based particles have a number-based particle size distribution having a d50, and less than 8.0% of the particles have a size which is larger than twice the d50. The silicon-based powder may be embedded in a matrix to form an active material powder. Preferably d50<150 nm and d10>10 nm. The cycle efficiency of a negative electrode of a battery, made using such a powder, is much improved.