US 11,721,805 B2
Negative electrode active material containing silicon clathrate II
Masanori Harata, Kariya (JP); Tatsuya Eguchi, Kariya (JP); Masakazu Murase, Kariya (JP); Jun Yoshida, Mishima (JP); Kazuhiro Suzuki, Hadano (JP); Daichi Kosaka, Toyota (JP); and Shinji Nakanishi, Shizuoka-ken (JP)
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Aug. 25, 2020, as Appl. No. 17/2,304.
Claims priority of application No. JP2019-154879 (JP), filed on Aug. 27, 2019.
Prior Publication US 2021/0066713 A1, Mar. 4, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/00 (2006.01); H01B 1/04 (2006.01); C01B 33/02 (2006.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01); C22C 24/00 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/386 (2013.01) [C01B 33/02 (2013.01); C22C 24/00 (2013.01); H01B 1/04 (2013.01); H01M 4/381 (2013.01); H01M 10/0525 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2006/14 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 2004/027 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A negative electrode active material comprising a silicon material in which silicon clathrate II represented by composition formula NaxSi136 (0≤x≤10) is contained and a volume of a pore having a diameter of not greater than 100 nm is not less than 0.025 cm3/g.