LITHIUM SECONDARY BATTERY

PURPOSE: To provide a lithium secondary battery with high charging/discharging efficiency and high energy density by having a negative electrode formed with a copper current collector, metallic gallium, and carbon material. CONSTITUTION: A lithium secondary battery has a stainless steel case 1, a st...

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Bibliographische Detailangaben
Hauptverfasser:	OTA AKIRA, MORIGAKI KENICHI, KABUTO NORIKO, YOSHINO MASAAKI
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:	PURPOSE: To provide a lithium secondary battery with high charging/discharging efficiency and high energy density by having a negative electrode formed with a copper current collector, metallic gallium, and carbon material. CONSTITUTION: A lithium secondary battery has a stainless steel case 1, a stainless steel sealing plate 2, a polypropylene separator 7, and a polypropylene gasket 8. A negative current collector 3 is made of copper, a negative electrode 4 is formed with metallic gallium, globular graphite, and a fluororesin binder, and the content of the metallic gallium on the current collector is 3 mg/cm . A positive current collector 5 is made of an aluminum foil, and a positive electrode 6 is constituted with manganese oxide serving as an active material, acetylene black and fluororesin. A lithium absorbing/releasing capability in the whole negative electrode is enhanced, and the lithium secondary battery with high energy density and long life can be realized.