SEPARATOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY MEMBER, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

To provide a separator for a non-aqueous electrolyte secondary battery having excellent withstand voltage characteristics.SOLUTION: A separator for a non-aqueous electrolyte secondary battery according to an embodiment of the present invention includes a polyolefin porous film with a film thickness...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUO TAKAHIRO, TAKADA ATSUHIRO, SATO YOSHIKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	To provide a separator for a non-aqueous electrolyte secondary battery having excellent withstand voltage characteristics.SOLUTION: A separator for a non-aqueous electrolyte secondary battery according to an embodiment of the present invention includes a polyolefin porous film with a film thickness of 4 to 40 μm and a pin diameter of 1 mmΦ, which does not break in a piercing test performed by piercing a pin with a tip of 0.5R at a piercing depth of 2.5 mm and a piercing speed of 1 mm/s.SELECTED DRAWING: None 【課題】耐電圧特性に優れる非水電解液二次電池用セパレータを提供する。【解決手段】本発明の一態様に係る非水電解液二次電池用セパレータは、膜厚が４〜４０μｍであり、かつ、ピン径１ｍｍΦ、先端０．５Ｒのピンを突き刺し深さ２．５ｍｍ、突き刺し速度１ｍｍ／ｓにて突き刺すことにより行われる突き刺し試験において破断しないポリオレフィン多孔質フィルムを含む。【選択図】なし