Title of article :
Polymeric gel electrolytes reinforced with glass-fibre cloth for lithium secondary batteries
Author/Authors :
Ho Cheol Park، نويسنده , , Jong Han Chun، نويسنده , , Sang-Hern Kim، نويسنده , , Jang Myoun Ko، نويسنده , , Soo Ik Jo، نويسنده , , Jae Sik Chung، نويسنده , , Hun-Joon Sohn، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
Polymeric gel electrolytes (PGE), based on polyacrylonitrile blended with poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-co-HFP)), which are reinforced with glass-fibre cloth (GFC) to increase the mechanical strength, are prepared for the practical use in lithium secondary batteries. The resulting electrolytes exhibit electrochemical stability at 4.5 V against lithium metal and a conductivity value of (2.0–2.1)×10−3 S cm−1 at room temperature. The GFC–PGE electrolytes show excellent strength and flexibility when used in batteries even if they contain a plasticiser. A test cell with LiCoO2 as a positive electrode and mesophase pich-based carbon fibre (MCF) as a negative electrode display a capacity of 110 mAh g−1 based on the positive electrode weight at the 0.2 C rate at room temperature. Over 80% of the initial capacity is retained after 400 cycles. This indicates that GFC is suitable as a reinforcing material to increase the mechanical strength of gel-based electrolytes for lithium secondary batteries.
Keywords :
Lithium-ion battery , Polymer electrolyte , Mechanical strength , Glass-fibre cloth , Polymer gel electrolyte
Journal title :
Journal of Power Sources
Journal title :
Journal of Power Sources