Positive electrode active material particle powder for non-aqueous electrolyte secondary battery, method for producing same, and non-aqueous electrolyte secondary battery
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United States of America Patent
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Sep 21, 2021
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Apr 16, 2020
app pub date -
Dec 12, 2019
filing date -
Nov 20, 2014
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Abstract
Positive electrode active material particle powder includes lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 μm to 20 μm, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape in which each (111) plane thereof is adjacent to at least one (100) plane thereof.
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