Synthesis and electrochemical performances of di(trimethylolpropane) tetraacrylate-based gel polymer electrolyte

The di(trimethylolpropane) tetraacrylate-based gel polymer electrolyte (GPE) was stable electrochemically up to 4.5 V versus Li/Li+ and showed the ionic conductivity of 6.2 x 10(-3) S cm(-1) at room temperature. Lithium-ion polymer batteries with the GPE were prepared and their performances were also investigated. The battery showed good rate capability and low temperature performance. The cell delivered 95.1% of the initial discharge capacity at 1.0C rate after the 150th cycling. At the over-charged test, the temperature did not exceed 90 degrees C and neither leakage of electrolyte nor explosion was observed in the cell. (c) 2005 Elsevier B.V. All rights reserved.