US 11,791,452 B2
Positive electrode for solid-state batteries, solid-state battery and method for producing solid-state battery
Hiroto Maeyama, Saitama (JP); Ushio Harada, Saitama (JP); Noriaki Kamaya, Saitama (JP); Sokichi Okubo, Saitama (JP); and Toru Sukigara, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Appl. No. 16/965,600
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
PCT Filed Feb. 2, 2018, PCT No. PCT/JP2018/003650
§ 371(c)(1), (2) Date Jul. 29, 2020,
PCT Pub. No. WO2019/150559, PCT Pub. Date Aug. 8, 2019.
Prior Publication US 2021/0043918 A1, Feb. 11, 2021
Int. Cl. H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/50 (2010.01); H01M 10/04 (2006.01); H01M 10/05 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0585 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/131 (2013.01) [H01M 4/362 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/049 (2013.01); H01M 10/0468 (2013.01); H01M 10/05 (2013.01); H01M 10/0585 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A positive electrode for solid-stage batteries, comprising:
a current collector; and
a positive electrode active material layer containing a positive electrode active material, wherein
the positive electrode active material layer contains the positive electrode active material in a ratio of at least 60% by mass relative to a total amount of the positive electrode active material layer, the positive electrode active material layer has a void fraction of less than 20% by volume, and
remaining components of the positive electrode active material layer other than the positive electrode active material include a solid electrolyte,
average particle size DSEM is 1 to 7 μm based on electron microscope observation, and
a ratio (050/DSEM) of a 50% particle size D50 in a volume-based cumulative particle size distribution measured using a laser diffraction particle size distribution analyzer relative to the average particle size (DSEM) is 1 to 3.