NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

This non-aqueous electrolyte secondary battery has: an electrode body formed by winding, in a flat shape, a positive electrode and a negative electrode with a separator interposed therebetween; and a non-aqueous electrolyte. The positive electrode has a positive electrode mixture layer containing a...

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Bibliographische Detailangaben
Hauptverfasser:	Tabushi, Akihiro, Takanashi, Yuu
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:	This non-aqueous electrolyte secondary battery has: an electrode body formed by winding, in a flat shape, a positive electrode and a negative electrode with a separator interposed therebetween; and a non-aqueous electrolyte. The positive electrode has a positive electrode mixture layer containing a positive electrode active material. In the positive electrode mixture layer, 0.10-0.30 mass % of ceramic particles are added, the volume-based median size (D50) of the ceramic particles is 0.5 μm or less, the air permeability of the separator is 165-310 sec/100 ml, and the air permeability of a flat portion of the separator with respect to the air permeability of a curved portion of the separator is 120-140%.