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 |
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.
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