POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A positive electrode is used for a nonaqueous electrolyte secondary battery. The positive electrode includes a positive electrode substrate and a positive electrode active material layer. The positive electrode active material layer is disposed on a surface of the positive electrode substrate. The p...

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Bibliographische Detailangaben
Hauptverfasser:	KURAMOTO, Mamoru, HIRATSUKA, Hidekazu, WATANABE, Hiroki, TERAUCHI, Masumi
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 positive electrode is used for a nonaqueous electrolyte secondary battery. The positive electrode includes a positive electrode substrate and a positive electrode active material layer. The positive electrode active material layer is disposed on a surface of the positive electrode substrate. The positive electrode active material layer includes a first layer and a second layer. The second layer is disposed between the positive electrode substrate and the first layer. The first layer includes a first positive electrode active material. The first positive electrode active material includes first aggregated particles. The second layer includes a second positive electrode active material. The second positive electrode active material includes second aggregated particles and single-particles. Each of the first aggregated particles and the second aggregated particles is formed by aggregation of 50 or more primary particles. The single-particles have an arithmetic mean diameter larger than the primary particles.