NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a secondary battery having high reliability by preventing corrosion of a battery can of a nonaqueous secondary battery, in particular, a lithium secondary battery. SOLUTION: In the secondary battery having a battery can formed by crimping a metallic can and a metalli...

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Hauptverfasser: OHASHI TAKEYA, TAKAHASHI KAZUTOSHI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a secondary battery having high reliability by preventing corrosion of a battery can of a nonaqueous secondary battery, in particular, a lithium secondary battery. SOLUTION: In the secondary battery having a battery can formed by crimping a metallic can and a metallic lid having a plating layer and using a nonaqueous electrolyte, the deposit layers of the metallic battery can includes, from the nonaqueous-electrolytic-solution side, a nickel deposit, the steel sheet, a zinc deposit and a nickel deposit. In place of the zinc deposit, an aluminum or zinc/aluminum mixture layer may be formed. Desirably, the thickness of the nickel deposits have a thickness of 1-5 μm and the zinc deposits have a thickness of 3-20 μm. The steel sheet preferably has a thickness of 0.2-2 mm. COPYRIGHT: (C)2011,JPO&INPIT