US 10,892,489 B2
Composite anode active material, and anode and lithium battery including composite anode active material
Youngjin Choi, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by Samsung SDI Co., Ltd., Yongin-si, Gyeonggi-do (KR)
Filed on Aug. 23, 2017, as Appl. No. 15/684,867.
Claims priority of application No. 10-2016-0112678 (KR), filed on Sep. 1, 2016.
Prior Publication US 2018/0062175 A1, Mar. 1, 2018
Int. Cl. H01M 4/60 (2006.01); H01M 4/13 (2010.01); H01M 4/1391 (2010.01); H01M 4/1397 (2010.01); H01M 4/1393 (2010.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 4/602 (2013.01) [H01M 4/1391 (2013.01); H01M 4/1393 (2013.01); H01M 4/1397 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A composite anode active material powder comprising:
a first core particle comprising a metal alloyable with lithium; and
a coating layer on the first core particle,
wherein the coating layer comprises an ion-conductive polymer,
wherein an amount of the ion-conductive polymer is from about 0.0001 wt % to about 0.04 wt % based on a total weight of the composite anode active material powder, and
wherein the ion-conductive polymer comprises at least one functional group selected from a carboxyl group, a carboxylate group, a cyano group, a phosphoric acid group, a sulfonic acid group, and a sulfonate group, and comprises lithium with which the functional group is substituted.