US 12,191,495 B2
Electrode, nonaqueous electrolyte battery, and battery pack
Tetsuro Kano, Kanagawa (JP); Yuki Watanabe, Kanagawa (JP); Hidetoshi Watanabe, Kanagawa (JP); and Keigo Hoshina, Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed on Sep. 3, 2021, as Appl. No. 17/466,391.
Application 17/466,391 is a continuation of application No. PCT/JP2019/012883, filed on Mar. 26, 2019.
Prior Publication US 2021/0399307 A1, Dec. 23, 2021
Int. Cl. H01M 4/00 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/623 (2013.01) [H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (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:
an active material-containing layer that comprises
active material particles and
a binder comprising a polymer,
wherein the active material particles comprise a lithium-containing nickel-cobalt-manganese composite oxide represented by LiaNi(1−x−y)CoxMnyMzO2, wherein 0.9≤a≤1.2, 0<x≤0.5, 0<y≤0.5, 0<z≤0.1, x≥y, 0.4≤1-x-y≤0.8, and M is at least one element selected from the group consisting of B, Mg, Al, Si, Ca, Ti, Zn, Zr, Sn, and W, and
the polymer has a repeating unit derived from vinylidene fluoride, and is configured such that one or more peaks in a nuclear magnetic resonance spectrum with fluorine-19 as a detection nucleus are located in the range of −90 ppm or higher and −88 ppm or lower, and one or more peaks having a peak intensity relative to a reference peak of 5% or more and present in a range of from −94 ppm or higher and −93 ppm or lower.