High-Energy-Density Poly(styrene-co-acrylonitrile) Thin Films

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• 作者：Fei Wen (1)
  Zhuo Xu (1)
  Weimin Xia (1)
  Hongjun Ye (1)
  Xiaoyong Wei (1)
  Zhicheng Zhang (2)
  
• 关键词：Poly(styrene ; co ; acrylonitrile) ; linear dielectric ; high energy density ; low dielectric loss
• 刊名：Journal of Electronic Materials
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：42
• 期：12
• 页码：3489-3493
• 全文大小：
• 作者单位：Fei Wen (1)
  Zhuo Xu (1)
  Weimin Xia (1)
  Hongjun Ye (1)
  Xiaoyong Wei (1)
  Zhicheng Zhang (2)
  
  1. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xin Jiaotong University, Xin, 710049, People Republic of China
  2. Department of Applied Chemistry, School of Science, Xin Jiaotong University, Xin, 710049, People Republic of China
  
• ISSN：1543-186X

文摘

The dielectric response of poly(styrene-co-acrylonitrile) (PSAN) thin films fabricated by a solution casting process was investigated in this work. Linear dielectric behavior was obtained in PSAN films under an electric field at frequencies from 100Hz to 1MHz and temperature of 50 to 100. The polymer films exhibited an intermediate dielectric permittivity of 4 and low dielectric loss (tan of 0.027. Under 400MV/m, the energy density of the PSAN films was 6.8J/cm3, which is three times higher than that of biaxially oriented polypropylene (BOPP) (about 1.6J/cm3). However, their chargeischarge efficiency (about 90%) was rather close to that of BOPP. The calculated effective dielectric permittivity of the PSAN films under high electric field was as high as 9, which may be attributed to the improved displacement of the cyanide groups (N) polarized at high electric fields. These high-performance features make PSAN attractive for high-energy-density capacitor applications.