ELECTRODE BODY, METHOD OF MANUFACTURING ELECTRODE BODY AND STORAGE ELEMENT HAVING ELECTRODE BODY

PROBLEM TO BE SOLVED: To provide an electrode body or the like which can suppress a short circuit current even when a short circuit is generated between a negative electrode active material layer and a positive electrode collector near a peripheral part of the negative electrode active material laye...

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Bibliographische Detailangaben
Hauptverfasser:	ARAKI KIYO, IGUCHI TAKAAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE 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 an electrode body or the like which can suppress a short circuit current even when a short circuit is generated between a negative electrode active material layer and a positive electrode collector near a peripheral part of the negative electrode active material layer, and which can be easily manufactured.SOLUTION: An electrode body includes: a negative electrode having a negative electrode collector and a negative electrode active material layer arranged on at least one surface side of the negative electrode collector; a positive electrode having a positive electrode collector, a positive electrode active material layer arranged on at least one surface side of the positive electrode collector and an undercoat layer which is arranged between the positive electrode collector and the positive electrode active material layer and has a resistance value higher than that of the positive electrode collector; and a separator arranged between the positive electrode and the negative electrode. The negative electrode and the positive electrode are laminated by holding the separator therebetween so that the negative electrode active material layer and the positive electrode active material layer are opposed to each other. On at least one part of the peripheral part of the negative electrode active material layer, an edge of the negative electrode active material layer is arranged outside an edge of the positive electrode active material layer in the positive electrode at the opposing position, and an edge of the undercoat layer is arranged outside the edge of the negative electrode active material layer.