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:
Jul. 02, 2019
Filed:
Mar. 09, 2017
Umicore, Brussels, BE;
Stijn Put, Olmen, BE;
Jan Gilleir, Mortsel, BE;
Kris Driesen, Hasselt, BE;
Jean-Sébastien Bridel, Geel, BE;
Nicolas Marx, Geel, BE;
Delphine Longrie, Ghent, BE;
Dan V. Goia, Potsdam, NY (US);
John I. Njagi, Potsdam, NY (US);
UMICORE, Brussels, BE;
Abstract
This invention relates to a negative electrode material for lithium-ion batteries comprising silicon and having a chemically treated or coated surface influencing the zeta potential of the surface. The active material consists of particles or particles and wires comprising a core comprising silicon, wherein the particles have a positive zeta potential in an interval between pH 3.5 and 9.5, and preferably between pH 4 and 9.5. The core is either chemically treated with an amino-functional metal oxide, or the core is at least partly covered with OSiHgroups, with 1<x<3, 1≤y≤3, and x>y, or is covered by adsorbed inorganic nanoparticles or cationic multivalent metal ions or oxides.