US 11,894,553 B2
Electrode, secondary battery, battery pack and vehicle
Kakuya Ueda, Yokohama (JP); Yasunobu Yamashita, Tokyo (JP); Keigo Hoshina, Yokohama (JP); Tetsuya Sasakawa, Yokohama (JP); Yasuhiro Harada, Isehara (JP); Norio Takami, Yokohama (JP); and Shinsuke Matsuno, Tokyo (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Feb. 26, 2021, as Appl. No. 17/186,819.
Claims priority of application No. 2020-153895 (JP), filed on Sep. 14, 2020.
Prior Publication US 2022/0085365 A1, Mar. 17, 2022
Int. Cl. H01M 4/485 (2010.01); H01M 4/133 (2010.01); H01M 4/131 (2010.01); H01M 4/02 (2006.01); H01M 10/42 (2006.01)
CPC H01M 4/485 (2013.01) [H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 10/425 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrode comprising:
a current collector; and
an active material-containing layer which is formed on a surface of the current collector and comprises a plurality of niobium titanium composite oxide particles,
wherein a X-ray diffraction pattern using a Cu-Kα ray source with respect to a surface of the active material-containing layer comprises a peak A with a highest intensity in a range of 2θ=26°±0.2° and a peak B with a highest intensity in a range of 2θ=23.9°±0.2°,
wherein an intensity ratio (Ia/Ib) between an intensity Ia of the peak A and an intensity Ib of the peak B is in a range of 1.80 or more to 2.60 or less, and
wherein the plurality of the niobium titanium composite oxide particles have a major axis oriented towards an in-plane direction of the current collector.