US 12,148,921 B2
Multi-shell structures and fabrication methods for battery active materials with expansion properties
Gleb Nikolayevich Yushin, Atlanta, GA (US); Bogdan Zdyrko, Atlanta, GA (US); Alexander Thomas Jacobs, Atlanta, GA (US); Eerik Torm Hantsoo, Oakland, CA (US); Addison Newcomb Shelton, Atlanta, GA (US); and Eugene Michael Berdichevsky, Alameda, CA (US)
Assigned to Sila Nanotechnologies, Inc., Alameda, CA (US)
Filed by Sila Nanotechnologies, Inc., Alameda, CA (US)
Filed on Jun. 28, 2023, as Appl. No. 18/343,208.
Application 18/343,208 is a continuation of application No. 13/919,818, filed on Jun. 17, 2013, abandoned.
Claims priority of provisional application 61/661,336, filed on Jun. 18, 2012.
Prior Publication US 2023/0343939 A1, Oct. 26, 2023
Int. Cl. H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 4/587 (2010.01); H01M 10/052 (2010.01)
CPC H01M 4/366 (2013.01) [H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 10/052 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A battery anode composition comprising composite particles, each of the composite particles comprising:
silicon-comprising active material;
a porous core comprising carbon disposed in combination with the silicon-comprising active material; and
a protective coating at least partially encasing the silicon-comprising active material and the porous core, the protective coating comprising carbon,
wherein:
the silicon-comprising active material is amorphous; and
the porous core comprises curved, multi-layered graphene material, with at least some of the silicon-comprising active material coating two or more internal pores of the porous core that are defined by the curved, multi-layered graphene material.