A Facile Approach to Fabricate Self-Standing Gel-Polymer Electrolytes for Flexible Lithium-Ion Batteries by Exploitation of UV-Cured Trivalent/Monovalent Acrylate Polymer Matrices

作者：Kil Eun Hye; Ha Hyo Jeong; Lee Sang Young^*

来源：Macromolecular Chemistry and Physics, 2011, 212(20): 2217-2223.

DOI：10.1002/macp.201100248

• electrochemistry
• energy storage
• gels
• glass transitions
• mechanical properties

A facile approach to fabricate a self-standing GPE for flexible lithium-ion batteries is demonstrated using a UV-cured trivalent/monovalent acrylate polymer matrix and a liquid electrolyte. The polymer matrix is successfully synthesized with the co-presence of the liquid electrolyte by UV polymerization of ETPTA, which has trivalent vinyl groups, and EGMEA, which contains monovalent vinyl groups, with the ETPTA/EGMEA ratio fixed at 90/10 (wt%/wt%). The ETPTA/EGMEA matrix shows a lower T(g) than the ETPTA matrix alone, which helps improve the mechanical flexibility and ionic transport of the resulting GPE. These features of the ETPTA/EGMEA-based GPE, together with its superior interfacial compatibility towards electrodes, play crucial roles in obtaining a better cell performance compared to the ETPTA-based GPE.

• 出版日期2011-10-17