An electrochemical battery cell with an improved thermoplastic sealing member. The seal member is made from a thermoplastic resin comprising polyphthalamide or impact modified polyphenylene sulfide. The seal member provides an effective seal vent over a broad temperature range and has a low electrolyte vapor transmission rate.

 
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> Toner for electrophotography, manufacturing method of toner for electrophotography, developer for electrophotography, and image forming method

> Cathode active material and lithium secondary battery containing the same
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