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Yuetao Zhao,Wenyao Yang,Yujiu Zhou,Yan Chen,Yajie Yang,Jianhua Xu,Yadong Jiang 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.6
The molecular weight shows great influence on dielectricand energy storage performance of poly(vinylidenefluoride) (PVDF) films and related devices. In this letter,the influences of molecular weight on the dielectric andenergy storage properties of PVDF films were studied. Ithas been found that, under a 1000 kV/cm electric field,the low-molecular-weight PVDF film presents a muchhigher energy storage efficiency as high as 80.10%,nearly three times as much as the high-molecular-weightPVDF film. Moreover, the low-molecular-weight PVDFfilm also shows high resistivity, representing an order ofmagnitude improvement over the high-molecular-weightPVDF film, which is more desirable and promising forhigh performance pulse discharge capacitor application.