US 11,695,107 B2
Porous silicon-containing composite, carbon composite using the same, and electrode, lithium battery and electronic device each including the same
Junghyun Choi, Yongin-si (KR); Inhyuk Son, Yongin-si (KR); Mijong Kim, Suwon-si (KR); Sangkook Mah, Seoul (KR); Jumyeung Lee, Suwon-si (KR); Minwoo Lim, Suwon-si (KR); and Sungsoo Han, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR); and SAMSUNG SDI CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR); and Samsung SDI Co., Ltd., Yongin-si (KR)
Filed on Oct. 8, 2019, as Appl. No. 16/595,751.
Claims priority of application No. 10-2018-0128321 (KR), filed on Oct. 25, 2018.
Prior Publication US 2020/0136130 A1, Apr. 30, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 46 Claims
OG exemplary drawing
 
1. A porous silicon-containing composite comprising:
a porous core comprising a porous silicon composite secondary particle; and
a shell on at least one surface of the porous core, the shell comprising a first graphene,
wherein the porous silicon composite secondary particle comprises an aggregate of
a first primary particle comprising silicon,
a second primary particle comprising a structure, and
a second graphene on at least one surface of the first primary particle and the second-primary particle,
wherein at least one of a shape and a degree of oxidation of the first primary particle and the second primary particle are different,
wherein the second graphene has about 1 to about 30 layers, and is disposed on the first primary particle, and
the second graphene has about 1 to about 5 layers, and is disposed on the second primary particle, and
wherein the second graphene disposed on the second primary particle is in a form of flakes and the first graphene is disposed on the second graphene.