Electrode for lithium ion battery, manufacturing method thereof, lithium ion battery, and manufacturing method thereof

Electrode for lithium ion battery, manufacturing method thereof, lithium ion battery, and manufacturing method thereof

An electrode for a lithium-ion secondary battery includes a collector of copper or the like, an electrode material layer being form on one surface and both surfaces of the collector and including an active material and a binder, and a binder-rich layer being formed in a dot shape or a stripe shape w...

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Hauptverfasser: ARAKI CHIEKO, SUZUKI TAKAAKI, ABE TOSHIO, NISHIMURA ETSUKO
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator ARAKI CHIEKO
SUZUKI TAKAAKI
ABE TOSHIO
NISHIMURA ETSUKO
description An electrode for a lithium-ion secondary battery includes a collector of copper or the like, an electrode material layer being form on one surface and both surfaces of the collector and including an active material and a binder, and a binder-rich layer being formed in a dot shape or a stripe shape with a predetermined interval in the interface between the collector and the electrode material layer and having a binder concentration higher than that of the electrode material layer. Accordingly, a concentration gradient of the binder is provided to the surface of the collector. By arranging the binder-rich layer at a predetermined interval, it is possible to improve the adhesiveness between the collector and the electrode material layer due to an anchor effect and to guarantee conductivity between the collector and the electrode material layer.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Electrode for lithium ion battery, manufacturing method thereof, lithium ion battery, and manufacturing method thereof
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