Positive electrode for lithium secondary battery, manufacturing method thereof, and lithium secondary battery

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United States of America Patent

PATENT NO 9935313
SERIAL NO

15409566

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Abstract

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Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.

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Patent Owner(s)

Patent OwnerAddress
SEMICONDUCTOR ENERGY LABORATORY CO LTDKANAGAWA KANAGAWA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Nobuhiro Kanagawa, JP 125 1546
Miwa, Takuya Kanagawa, JP 74 678
Momo, Junpei Kanagawa, JP 146 2390
Nomoto, Kuniharu Saitama, JP 43 695

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