Electrode for secondary battery
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United States of America Patent
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Dec 26, 2023
Grant Date -
N/A
app pub date -
Jul 14, 2021
filing date -
Jul 15, 2020
priority date (Note) -
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Abstract
An electrode for a secondary battery includes a current collector, a first electrode mixture layer disposed on at least one surface of the current collector and including carboxymethyl cellulose and styrene butadiene rubber, and a second electrode mixture layer disposed on the first electrode mixture layer and including carboxymethyl cellulose. A weight average molecular weight of the carboxymethyl cellulose included in the first electrode mixture layer is less than a weight average molecular weight of the carboxymethyl cellulose included in the second electrode mixture layer. Adhesion between the electrode current collector and the active material and cohesion between the active materials may be improved, and the resistance within the electrode may be reduced, thereby significantly increasing the capacity and lifespan characteristics of a battery.
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