Positive electrode mixture layer, conductive additive, positive electrode mixture, and lithium-ion secondary battery

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United States of America

PATENT NO 12142764
APP PUB NO 20240120481A1
SERIAL NO

18534281

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Abstract

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A positive electrode mixture layer for a lithium-ion secondary battery suitable for producing a lithium-ion secondary battery with high rate characteristics at an ordinary temperature and low temperatures and low internal resistance (DCR) at low temperatures, characterized by including a positive electrode active material, a binder, and a conductive additive, in which the conductive additive includes carbon black, a carbon nanotube (1) having an average fiber diameter of 80 to 400 nm, and a carbon nanotube (2) having an average fiber diameter of 0.4 to 3.0 nm, the content rates of the carbon black, the carbon nanotube (1), and the carbon nanotube (2) in the conductive additive are 40 to 80% by mass, 10 to 50% by mass, and 1 to 30% by mass, respectively, and the content rate of the conductive additive in the positive electrode mixed layer is 0.1 to 5.0% by mass.

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Patent Owner(s)

Patent OwnerAddress
RESONAC CORPORATION13-9 SHIBA DAIMON 1-CHOME MINATO-KU TOKYO 105-8518

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harada, Daisuke Tokyo, JP 39 207
Inoue, Hirofumi Tokyo, JP 157 2962
Kohno, Daisuke Tokyo, JP 43 115
Tonegawa, Akihisa Tokyo, JP 12 30

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