US 11,699,782 B2
Secondary battery
Shunpei Yamazaki, Tokyo (JP); Teppei Oguni, Kanagawa (JP); Tamae Moriwaka, Kanagawa (JP); Junpei Momo, Kanagawa (JP); Ryota Tajima, Kanagawa (JP); and Nobuhiro Inoue, Kanagawa (JP)
Assigned to SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Kanagawa-ken (JP)
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
Filed on Jun. 18, 2020, as Appl. No. 16/904,618.
Application 16/904,618 is a continuation of application No. 13/940,287, filed on Jul. 12, 2013, abandoned.
Claims priority of application No. 2012-161489 (JP), filed on Jul. 20, 2012.
Prior Publication US 2020/0321605 A1, Oct. 8, 2020
Int. Cl. H01M 4/133 (2010.01); H01M 4/587 (2010.01); H01M 4/36 (2006.01)
CPC H01M 4/133 (2013.01) [H01M 4/366 (2013.01); H01M 4/587 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An active material comprising:
a graphite comprising a plurality of graphene layers; and
a film comprising one or more of silicon and phosphorous,
wherein an edge of each of the plurality of graphene layers is chemically bonded to the film by one of C—O—Si and C—O—P, and
wherein the graphite is capable of inserting and extracting lithium ions via the film.