	US 11,916,221 B2
	Composite anode material including surface-stabilized active material particles and methods of making same
James McKinney, Chicago, IL (US); Cary M. Hayner, Chicago, IL (US); Joshua J. Lau, Chicago, IL (US); Seonbaek Ha, Chicago, IL (US); and Francis Wang, Chicago, IL (US)
Assigned to NANOGRAF CORPORATION, Chicago, IL (US)
Filed by NANOGRAF CORPORATION, Chicago, IL (US)
Filed on Sep. 23, 2020, as Appl. No. 17/029,729.
Application 17/029,729 is a continuation of application No. 15/667,882, filed on Aug. 3, 2017, granted, now 10,804,530.
Prior Publication US 2021/0057720 A1, Feb. 25, 2021
Int. Cl. H01M 4/133 (2010.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01); H01M 4/62 (2006.01); H01M 4/485 (2010.01); C01B 33/113 (2006.01); H01M 4/48 (2010.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/134 (2010.01); C01B 32/198 (2017.01)

CPC H01M 4/133 (2013.01) [C01B 33/113 (2013.01); H01M 4/134 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/483 (2013.01); H01M 4/485 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 10/0525 (2013.01); C01B 32/198 (2017.08)]

17 Claims

1. A composite electrode material comprising:

capsules, each capsule comprising one of graphene, reduced graphene oxide, graphene oxide, or a combination thereof; and

at least one active material particle disposed inside of each capsule, the active material particle comprising:

an electrochemically active core; and

a buffer layer that surrounds the core and comprises a silicon oxide, a lithium silicate, or combination thereof;

wherein the buffer layer comprises Li₂Si₂O₅, Li₂SiO₃, Li₄SiO₄, or combinations thereof.