US 11,984,588 B2
Active material, electrode, secondary battery, battery pack, and vehicle
Tetsuya Sasakawa, Yokohama (JP); Yasuhiro Harada, Isehara (JP); and Norio Takami, Yokohama (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Minato-ku (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Minato-ku (JP)
Filed on Aug. 31, 2020, as Appl. No. 17/007,660.
Application 17/007,660 is a continuation of application No. PCT/JP2020/010874, filed on Mar. 12, 2020.
Claims priority of application No. 2019-044709 (JP), filed on Mar. 12, 2019; and application No. 2019-155874 (JP), filed on Aug. 28, 2019.
Prior Publication US 2020/0403229 A1, Dec. 24, 2020
Int. Cl. H01M 4/505 (2010.01); B60L 7/10 (2006.01); B60L 50/64 (2019.01); H01M 4/131 (2010.01); H01M 4/134 (2010.01); H01M 4/36 (2006.01); H01M 4/46 (2006.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 50/204 (2021.01); H01M 50/296 (2021.01); H01M 50/509 (2021.01); H01M 4/02 (2006.01)
CPC H01M 4/505 (2013.01) [B60L 7/10 (2013.01); B60L 50/64 (2019.02); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/46 (2013.01); H01M 4/525 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 10/4257 (2013.01); H01M 50/204 (2021.01); H01M 50/296 (2021.01); H01M 50/509 (2021.01); B60Y 2200/91 (2013.01); B60Y 2400/112 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An active material represented by a general formula Lix(NiaCobMncMd)1−s(Nb1−t−uTatM′u)sO2, where M is at least one selected from the group consisting of Li, Ca, Mg, Al, Ti, V, Cr, Zr, Mo, Hf, and W, M′ is at least one selected from the group consisting of K, P, Fe, Si, Na, Cu and Zn, and satisfying 1.0≤x≤1.3, 0≤a≤0.9, 0≤b≤1.0, 0≤c≤0.8, 0≤d≤0.5, a+b+c+d=1, 0.005≤s≤0.3, 0.0005≤t≤0.1, and 0≤u≤0.3, the active material having a crystal structure that belongs to a space group of any one of space croups R3/m, C2/m, and Fm-3m.