POSITIVE ELECTRODE MATERIAL

WIPO Patent Application WO/2023/080120

A1

The present invention provides a positive electrode material capable of further improving load characteristics in a lithium ion secondary battery. Provided is a positive electrode material comprising: primary particles which include a lithium transition metal compound having an olivine structure; and carbon, to the surface of which the primary particles adhere, said positive electrode material including secondary particles which are obtained by aggregation of a plurality of the primary particles. In the positive electrode material, the content of carbon is more than 0.5 mass% but not more than 1.8 mass% with respect to the positive electrode material, and the lithium transition metal compound included in the positive electrode material has a crystallite size of 50-70 nm. The specific surface area of the positive electrode material is 14-45 m2/g.

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NODA SHIGENOBU (JP)
ENOMOTO TAKASHI (JP)
KIRIE HIDEYUKI (JP)
ISAI KENTO (JP)
KOBAYASHI KENICHI (JP)

PCT/JP2022/040767

May 11, 2023

October 31, 2022

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NICHIA CORP (JP)

H01M4/58; H01M4/36

JP2019149356A	2019-09-05
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JP2018041719A	2018-03-15
JP2020030920A	2020-02-27
JP2012195156A	2012-10-11

YAMAO, Norihito et al. (JP)

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