A porous polymer electrolyte based on P(VDF-HFP) prepared by a simple phase separation process

作者：Li G C; Zhang P; Zhang H P; Yang L C; Wu Y P^*

来源：Electrochemistry Communications, 2008, 10(12): 1883-1885.

DOI：10.1016/j.elecom.2008.09.035

• Porous membrane
• P(VDF-HFP)
• Phase separation
• Polymer electrolyte
• Lithium-ion battery

A polymer electrolyte with interconnected pores based on poly(vinylidene difluoride-co-hexafluoropropylene) [P(VDF-HFP)] copolymer was prepared by a simple phase separation process using water as both non-solvent and pore inducer. The prepared porous membrane was characterized by SEM, XRD and DSC. With a narrow pore size distribution and low crystallinity, the resulting polymer electrolyte shows a high ionic conductivity up to 1.76 x 10(-3) S cm-(1) at room temperature and exhibits low apparent activation energy of 10.35 kJ mol(-1) for the transportation of ions. Its low cost and environmentally friendliness provide great promise for the practical application in polymer lithium-ion batteries.

• 出版日期2008-12
• 单位复旦大学