US 12,113,213 B2
Cathode active material for non-aqueous electrolyte secondary battery and manufacturing method for same, and non-aqueous electrolyte secondary battery
Hiroyuki Toya, Ehime (JP); Masahiro Morita, Aichi (JP); Hiroki Nagai, Aichi (JP); Yoshinari Makimura, Aichi (JP); and Tetsuro Kobayashi, Aichi (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi (JP)
Appl. No. 14/907,087
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi (JP)
PCT Filed Jul. 22, 2014, PCT No. PCT/JP2014/069371
§ 371(c)(1), (2) Date Jan. 22, 2016,
PCT Pub. No. WO2015/012282, PCT Pub. Date Jan. 29, 2015.
Claims priority of application No. 2013-153897 (JP), filed on Jul. 24, 2013.
Prior Publication US 2016/0172673 A1, Jun. 16, 2016
Int. Cl. H01M 4/525 (2010.01); C01G 53/00 (2006.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 4/505 (2013.01) [C01G 53/50 (2013.01); H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); C01P 2002/50 (2013.01); C01P 2002/74 (2013.01); C01P 2004/61 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01); Y02T 10/70 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A cathode active material for a non-aqueous electrolyte secondary battery expressed by a general formula (A):
Li1+aNixCoyMnzMtO2 , where 0.12<a≤0.20, x+y+z+t=1, 0.30≤x≤0.50, 0.30<y≤0.40, 0.15≤z≤0.40, 0.0003<t≤0.01, and M is one or more element selected from among Ca, Mg, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W, and includes layered hexagonal crystal lithium nickel cobalt manganese composite oxide particles;
the lithium nickel cobalt manganese composite oxide particles comprise spherical shaped secondary particles that are formed by an aggregation of plural primary particles, wherein the primary particles have a spherical shape;
wherein a ratio of an integrated width of a diffraction peak on plane (104) with respect to an integrated width of a diffraction peak on plane (003) of the Miller indices (hkl) in powder Xray diffraction that uses CuKα rays is 1.38 or greater and 1.49 or less; and
a ratio of a peak integrated intensity on plane (003) with respect to a peak integrated intensity on plane (104) of the Miller indices (hkl) in powder X-ray diffraction that uses CuKα rays is 1.23 or greater and 1.29 or less.