LITHIUM ION SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery which increases the battery output by reducing the degree of curvature of a positive electrode without increasing the number of processes.SOLUTION: The positive electrode 11 exposes one side edge along the longitudinal direction on bot...

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Bibliographische Detailangaben
Hauptverfasser:	NANAUMI TAKESHI, SUZUKI KATSUNORI, MITANI TAKAYUKI, SHINOHARA HIDEKI
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:	PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery which increases the battery output by reducing the degree of curvature of a positive electrode without increasing the number of processes.SOLUTION: The positive electrode 11 exposes one side edge along the longitudinal direction on both surfaces of metal foil 11a made of an aluminum alloy as a positive electrode mixture untreated portion 11c, and includes a positive electrode mixture layer 11b coated in the other region. When the width of a continuous region portion of the positive electrode mixture untreated portion 11c is a, and the width of the positive electrode mixture layer 11b is b, the relation of (1) Y>19.6×(a/b)+35.0 is satisfied.