Lithium-ion secondary battery and electronic device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9882211
SERIAL NO

14704508

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Abstract

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A lithium-ion secondary battery with high capacity is provided. Alternatively, a lithium-ion secondary battery with improved cycle characteristics is provided. To achieve this, an active material including a particle having a cleavage plane and a layer containing carbon covering at least part of the cleavage plane is provided. The particle having the cleavage plane contains lithium, manganese, nickel, and oxygen. The layer containing carbon preferably contains graphene. When a lithium-ion secondary battery is fabricated using an electrode including the particle having the cleavage plane at least part of which is covered with the layer containing carbon as an active material, the discharge capacity can be increased and the cycle characteristics can be improved.

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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
Hirohashi, Takuya Kanagawa, JP 86 2912
Ikenuma, Tatsuya Kanagawa, JP 39 352
Kawakami, Takahiro Kanagawa, JP 223 2247
Miyake, Hiroyuki Kanagawa, JP 617 12888
Momma, Yohei Kanagawa, JP 150 546
Motoyoshi, Mako Kanagawa, JP 24 146
Ochiai, Teruaki Kanagawa, JP 106 390
Seo, Satoshi Kanagawa, JP 1551 30420
Yoshitomi, Shuhei Kanagawa, JP 49 365

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