Positive electrode active material for lithium secondary batteries, positive electrode for lithium secondary batteries, and lithium secondary battery
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United States of America Patent
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Aug 10, 2021
Grant Date -
Oct 17, 2019
app pub date -
Oct 31, 2017
filing date -
Oct 31, 2016
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Abstract
The present invention provides a positive electrode active material for lithium secondary batteries including: secondary particles obtained by aggregating primary particles capable of being doped and de-doped with lithium ions, in which the secondary particles have pores, and pore distribution obtained by a mercury intrusion method satisfies requirements (1) and (2) below:
- (1) pores that are present in any one or both of the secondary particles or spaces between the secondary particles have a pore peak within a range of a pore radius of equal to or greater than 10 nm and equal to or less than 200 nm; and(2) a total surface area of pores that have pore radii of equal to or greater than 100 nm and equal to or less than 10 μm among the pores that are present in any one or both of the secondary particles or spaces between the secondary particles is less than 1.1 m2/g.
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