POSITIVE ACTIVE MATERIAL AND LITHIUM-ION SECONDARY BATTERY

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United States of America Patent

APP PUB NO 20180366720A1
SERIAL NO

16115395

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Abstract

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The present disclosure provides a positive active material and a lithium-ion secondary battery. The positive active material comprises LiCoO2 (LCO) and LiFexMn1-xPO4 (LFMP), 0.25≤x≤0.4; a mass ratio of LiFexMn1-xPO4 to LiCoO2 is m, and 0xMn1-xPO4 is a polycrystalline particle with an olivine structure; LiCoO2 is a polycrystalline particle with a laminated structure; an average particle diameter D50 of the polycrystalline particle of LiFexMn1-xPO4 is smaller than an average particle diameter D50 of the polycrystalline particle of LiCoO2, and the polycrystalline particle of LiFexMn1-xPO4 is filled in the polycrystalline particle of LiCoO2. The lithium-ion secondary battery comprises the aforementioned positive active material.

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Patent Owner(s)

Patent OwnerAddress
NINGDE AMPEREX TECHNOLOGY LTD352100 XINGANG ROAD ZHANGWAN TOWN JIAOCHENG DISTRICT NINGDE FUJIAN 1 NINGDE CITY FUJIAN PROVINCE 352100

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
CHONG, Jin Ningde, CN 7 31

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