Synthesis and Characterization of Polyimide Hybrid Xerogels Containing Functionalized Inorganic Nanospheres

초록

Nanofibrous polyimide hybrid xerogels were prepared using sol-gel processing and freeze drying. Various functional dianhydrides and diamines were used to synthesize poly(amic acid)s which were converted into polyimide wet gels through chemical imidization. To prevent the volume shrinkage of the wet gels during freeze drying process, surface-modified inorganic nanospheres were added to form polyimide hybrid xerogels. These polyimide hybrid xerogels showed excellent ionic conductivity and electrolyte uptake capability, which suggest that they could be used as a separator in Li-S battery. The pore size, morphology and electrical performance of separator were investigated by FT-IR, SEM, contact angle, battery cycler system and EIS.