METHOD FOR MANUFACTURING NONAQUEOUS SECONDARY BATTERY

METHOD FOR MANUFACTURING NONAQUEOUS SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a method for manufacturing a secondary battery which can be charged/discharged at high rate.SOLUTION: In the method for manufacturing a secondary battery, negative electrode slurry including a negative electrode active material, carboxymethyl cellulose (CMC) and styr...

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Hauptverfasser: AKITA HIROYUKI, MIO TAKUMI, ANDO KENSUKE, SUMI TOMOHIDE
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator AKITA HIROYUKI
MIO TAKUMI
ANDO KENSUKE
SUMI TOMOHIDE
description PROBLEM TO BE SOLVED: To provide a method for manufacturing a secondary battery which can be charged/discharged at high rate.SOLUTION: In the method for manufacturing a secondary battery, negative electrode slurry including a negative electrode active material, carboxymethyl cellulose (CMC) and styrene-butadiene rubber is imparted on a negative electrode collector and dried to form a negative electrode active material layer. The CMC has a weight average molecular weight of 30×10or more and 40×10or less. An amount of the CMC included in the negative electrode active material layer is in a range of 0.6-0.8 mass%. The negative electrode active material has an O/C value of 1.0 or less, the O/C value being a value of a ratio between an oxygen element and a carbon element and obtained by means of an X-ray photoelectron spectroscopy on a surface of a particle thereof.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title METHOD FOR MANUFACTURING NONAQUEOUS SECONDARY BATTERY
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