聚酰亚胺
电介质
材料科学
复合数
电容器
活化能
能量密度
介电常数
复合材料
复合薄膜
光电子学
化学
电气工程
物理化学
工程物理
电压
图层(电子)
物理
工程类
作者
Wei Li,Chuan Shi,Hongmei Qin,Chuanxi Xiong,Quanling Yang
摘要
ABSTRACT The demand for dielectric capacitor materials has significantly increased, owing to the need for highly efficient operation at elevated temperatures amidst the rapid advancements in modern electronics. In this contest, fluorinated polyimide (FPI)/CaCu 3 Ti 4 O 12 (CCTO) composite films have been successfully fabricated through a straightforward blending approach. The modified CCTO (mCCTO) is prepared by first hydroxylation CCTO and subsequently by grafting KH550 onto its surface, a strategy aimed at enhancing the interfacial compatibility with FPI. The synergistic effect of the high dielectric constant and good dispersibility of CCTO inorganic fillers underscores the significant role of filler dispersibility in enhancing the high‐temperature capacitive performance of polymer composite materials. The dielectric constant of FPI‐mCCTO composite films containing 9 wt.% mCCTO reached 8.5 at 150°C, more than double that of pure FPI (3.0). Furthermore, the FPI‐0.09‐mCCTO composite films exhibited the highest discharge energy density of 4.92 J·cm −3 at 355 MV·m −1 . This facile approach provided a viable strategy for fabricating high‐temperature dielectric materials for electrical energy storage.
科研通智能强力驱动
Strongly Powered by AbleSci AI