US 11,990,614 B2
Active material, electrode, secondary battery, battery pack, and vehicle
Kazuki Ise, Kawasaki (JP); Hirofumi Yasumiishi, Kawasaki (JP); Keigo Hoshina, Yokohama (JP); Yasuhiro Harada, Isehara (JP); and Norio Takami, Yokohama (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Aug. 31, 2021, as Appl. No. 17/446,482.
Claims priority of application No. 2021-043258 (JP), filed on Mar. 17, 2021; and application No. 2021-131236 (JP), filed on Aug. 11, 2021.
Prior Publication US 2022/0302445 A1, Sep. 22, 2022
Int. Cl. H01M 4/485 (2010.01); H01M 4/02 (2006.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 4/42 (2006.01)
CPC H01M 4/485 (2013.01) [H01M 10/0525 (2013.01); H01M 10/425 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An active material, comprising:
a composite oxide of formula:
LiaTibNb2-2dMc+2dO2b+5+3c,
wherein
M is one selected from the group consisting of W and Mo,
0≤a≤b+4+3c,
0<b<2−2d, and
0<c<2−4d, and
wherein the composite oxide is of a tetragonal crystal structure.