POLYETHYLENETEREPHTHALATE-BASED SEPARATOR FOR SECONDARY BATTERY

PURPOSE: A polyethylene terephthalate separator is provided to have a high short circuit temperature while having a shutdown function, to have excellent ion conductivity by having excellent porosity and pore size, and to have high physical strength. CONSTITUTION: A polyethylene terephthalate separat...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	JEON, MI NA, KIM, MIN JEONG, LEE, HYANG DOO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE: A polyethylene terephthalate separator is provided to have a high short circuit temperature while having a shutdown function, to have excellent ion conductivity by having excellent porosity and pore size, and to have high physical strength. CONSTITUTION: A polyethylene terephthalate separator for a secondary battery comprises a PET substrate layer which consists of a polyethylene terephthalate unwoven fabric; and a polyolefin-based thin film layer which is laminated on one side or both sides of the PET layer; and a polyolefin-based thin film layer which is laminated on one side or both sides of the PET substrate layer. The PET substrate layer consists of a first fiber which is formed of PET with a melting point of 240 °C or more and a second fiber which is formed of PET with a melting point of 180-240 °C. The porosity of the polyolefin-based thin film layer is 30-80 % and the average pore diameter is 0.05-0.95 micron.