COATED ACTIVE MATERIAL, POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE, AND BATTERY

WIPO Patent Application WO/2022/255027

A1

When the value obtained by integrating the differential pore volume dV/dD of a positive electrode active material 101 coated with a second coating layer 103 for pore diameters of 2-100 nm is defined as an integrated value S1, the value obtained by integrating the differential pore volume dV/dD of a coated active material 110 for pore diameters of 2-100 nm is defined as an integrated value S2, the value of the differential pore volume dV/dD of the positive electrode active material 101 coated with the second coating layer 103 for a pore diameter of 3 nm is defined as a value S3, and the value of the differential pore volume dV/dD of the coated active material 110 for a pore diameter of 3 nm is defined as a value S4, the present invention satisfies at least one condition selected from the group consisting of: the rate of change from the integrated value S1 to the integrated value S2 being -78.0% to -15.0%; and the rate of change from the value S3 to the value S4 being -77.0% to -12.0%.

NAGAO KENJI
SUGIMOTO YUTA
HASHIMOTO KAZUYA
SASAKI IZURU

PCT/JP2022/019578

December 08, 2022

May 06, 2022

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PANASONIC IP MAN CO LTD (JP)

H01M4/13; H01M4/36; H01M4/525; H01M4/62; H01M10/052; H01M10/0562

WO2019146236A1	2019-08-01
WO2019135322A1	2019-07-11
WO2013073214A1	2013-05-23

JP2014022074A	2014-02-03
CN112018451A	2020-12-01
JP2016018735A	2016-02-01

KAMATA Kenji et al. (JP)

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