NON-AQUEOUS ELECTROLYTIC SECONDARY BATTERY

A negative electrode comprises a sheet-like negative current collector having a negative electrode mixture layer formed on a surface thereof, and includes a double-side coating, portion in which the negative electrode mixture layer is formed on both sides of the negative current collector, and a sin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Sakitani, Nobuhiro, Morikawa, Takaharu
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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Beschreibung
Zusammenfassung:	A negative electrode comprises a sheet-like negative current collector having a negative electrode mixture layer formed on a surface thereof, and includes a double-side coating, portion in which the negative electrode mixture layer is formed on both sides of the negative current collector, and a single-side coating portion in which the negative electrode mixture layer is formed on one side of the negative current collector. At least a part of the single-side coating portion is disposed at the outermost periphery of the electrode assembly. At least a part of an exposed surface of the negative current collector in the single-side coating portion is in contact with the inner surface of an outer can. The charge expansion ratio of the negative electrode mixture layer in the single-side coating portion is greater than the charge expansion ratio of the negative electrode mixture layer in the double-side coating portion.