POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A positive electrode active material for a nonaqueous electrolyte secondary battery includes particles of a lithium-transition metal composite oxide that contains nickel in the composition thereof and has a layered structure. The particles have an average particle size DSEM based on electron microsc...

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Main Authors KAWAMURA, Soshi, MAEYAMA, Hiroto, OGAWA, Atsushi, SUKIGARA, Toru, KOBAYASHI, Kenichi
Format Patent
LanguageEnglish
Published 26.04.2018
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:A positive electrode active material for a nonaqueous electrolyte secondary battery includes particles of a lithium-transition metal composite oxide that contains nickel in the composition thereof and has a layered structure. The particles have an average particle size DSEM based on electron microscopic observation in a range of 1 Pm to 7 jim in which a ratio DSO/DSEM of a 50% particle size D50 in volume-based cumulative particle size distribution to the average particle size based on electron microscopic observation is in a range of 1 to 4, and a ratio D9O/Dio of a 90% particle size D 90 to a 10% particle size Dio in volume-based cumulative particle size distribution is 4 or less. Fig. 1 2. 50/tm Fig. 2 2. 50A m
Bibliography:Application Number: AU20170202103