	US 12,087,936 B2
	Compositions and uses thereof
Pirmin Ulmann, Giubiasco (CH); Sergio Pacheco Benito, Biasca (CH); Simone Zürcher, Origlio (CH); Patrick Lanz, Bellinzona (CH); and Michael Spahr, Bellinzona (CH)
Assigned to IMERYS GRAPHITE & CARBON SWITZERLAND, SA, (CH)
Filed by Imerys Graphite & Carbon Switzerland SA, Bodio (CH)
Filed on May 7, 2021, as Appl. No. 17/302,634.
Application 17/302,634 is a division of application No. 16/332,122, granted, now 11,081,690, previously published as PCT/EP2017/072923, filed on Sep. 12, 2017.
Claims priority of application No. 16188389 (EP), filed on Sep. 12, 2016.
Prior Publication US 2021/0265620 A1, Aug. 26, 2021
Int. Cl. H01M 4/1393 (2010.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)

CPC H01M 4/1393 (2013.01) [H01M 4/04 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1395 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); Y02T 10/70 (2013.01)]

16 Claims

1. A method of making a silicon-carbon particulate composite, comprising co-milling silicon and carbonaceous starting materials under wet conditions to produce a silicon-carbon particulate composite having a nanostructure which inhibits or prevents silicon pulverization when used as active material in a negative electrode of a Li-ion battery and/or which maintains electrochemical capacity of a negative electrode;

wherein the carbonaceous starting material is selected from a natural graphite, a synthetic graphite, or a mixture of natural and synthetic graphite; wherein the natural or synthetic graphite is exfoliated graphite or expanded graphite.