NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A non-aqueous electrolyte secondary battery having a long cycle life and generates a small amount of gas during, for example, storage in a charged state. A negative electrode in a non-aqueous electrolyte secondary battery according to an exemplary embodiment includes a negative electrode current col...

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Bibliographische Detailangaben
Hauptverfasser:	Wang Na, Kasamatsu Shinji
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRICITY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A non-aqueous electrolyte secondary battery having a long cycle life and generates a small amount of gas during, for example, storage in a charged state. A negative electrode in a non-aqueous electrolyte secondary battery according to an exemplary embodiment includes a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector. The negative electrode mixture layer contains a water-soluble polymer and a negative electrode active material containing a silicon-based active material. The water-soluble polymer contains 0.30 mol/100 g or more and 0.40 mol/100 g or less of an acrylic acid monomer unit and 10−4 mol/100 g or more and 10−3 mol/100 g or less of a tetrafunctional (meth)acrylate monomer unit. An aqueous solution containing 1% by mass of the polymer in terms of solid content has a viscosity of 0.05 Pa·s or higher and 0.70 Pa·s or lower.