LITHIUM METAL COMPOSITE OXIDE, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

WIPO Patent Application WO/2024/117259

A1

The present invention relates to a lithium metal composite oxide having a plurality of secondary particles that are the aggregates of primary particles, wherein: at least a portion of the secondary particles has voids therein; with respect to the contour shape of the voids exposed in the cross-section of the secondary particles having voids therein, the area-weighted average value of the aspect ratio of voids having a circle-equivalent diameter of 0.2 μm or more is 1.8-5.0; and the ratio of the number of secondary particles having therein voids having a circle-equivalent diameter of 0.5 μm or more with respect to the total number of the secondary particles is 3-95%.

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JP7238880	Metal composite hydroxide and manufacturing method thereof, positive electrode active material for non-aqueous electrolyte secondary battery and manufacturing method thereof, and non-aqueous electrolyte secondary battery

IWASAKI KENTARO (JP)
ARAI NANA (JP)

PCT/JP2023/043152

June 06, 2024

December 01, 2023

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SUMITOMO CHEMICAL CO (JP)

C01G53/00; H01M4/505; H01M4/525

WO2022169271A1

2022-08-11

JP2022150409A	2022-10-07
JP2015185401A	2015-10-22
JP2019096406A	2019-06-20
JP2021120937A	2021-08-19

MATSUNUMA Yasushi et al. (JP)

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