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Study on energy storage performance of polyvinylidene fluoride based dielectric thin films modified by doping voltage stabilizers
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Lin LI1, Kaichuan ZHENG2, Haixin MA2, Shengkun NIU2, Hao YU1, Jian ZHANG1, Zhaoliang XING3, Tiandong ZHANG2, Qingguo CHI2
Insulating Materials | 2025, 58(4) : 16 - 23
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Insulating Materials | 2025, 58(4): 16-23
• Advanced Energy Storage Dielectric Special Issue •
Study on energy storage performance of polyvinylidene fluoride based dielectric thin films modified by doping voltage stabilizers
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Lin LI1, Kaichuan ZHENG2, Haixin MA2, Shengkun NIU2, Hao YU1, Jian ZHANG1, Zhaoliang XING3, Tiandong ZHANG2, Qingguo CHI2
Affiliations
  • 1 Electric Power Research Institute of State Grid Heilongjiang Electric Power Co., Ltd., Harbin 150030, China
  • 2 Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
  • 3 China Electric Power Reserch Institute, Beijing 102209, China
Published: 2025-04-20 doi: 10.16790/j.cnki.1009-9239.im.2025.04.003
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The ternary copolymer of polyvinylidene fluoride, poly (vinylidene fluoride trifluoroethylene chlorofluoro-ethylene) (P(VDF-TrFE-CFE), abbreviated as PVTC) is expected to be used as a new type of capacitor film material due to its high relative dielectric constant. In this paper, the crystal phase structure of PVTC was regulated by optimizing the hot pressing process of thin film preparation, and the influence of different hot pressing temperatures on the crystal phase structure of PVTC thin films was discussed. Then, PVTC composite films doped with low content voltage stabilizer aromatic ketone small molecule 4-acryloxy-2-hydroxyphenylketone (ALRB) were prepared by solution casting method, and the influence law and mechanism of ALRB doping content on the electrical properties of the composite films were studied systematically. The results show that when the hot pressing temperature is 180℃, a multiphase structure coexisting with α phase, β phase, and γ phase is formed inside the PVTC film, which has significant improvement effect on its dielectric properties and energy storage properties. Appropriate amount of voltage stabilizer ALRB can dissipate high-energy electron energy and improve the insulation performance of PVTC films. When the mass fraction of ALRB is 0.5%, the electric strength of PVTC/ALRB composite film reaches 485.7 kV/mm, and the discharge energy density and charge discharge efficiency are 12.12 J/cm3 and 64.4%, respectively.

P(VDF-TrFE-CFE)  /  composite film  /  voltage stabilizer  /  energy storage performance
Lin LI, Kaichuan ZHENG, Haixin MA, Shengkun NIU, Hao YU, Jian ZHANG, Zhaoliang XING, Tiandong ZHANG, Qingguo CHI. Study on energy storage performance of polyvinylidene fluoride based dielectric thin films modified by doping voltage stabilizers[J]. Insulating Materials, 2025 , 58 (4) : 16 -23 . DOI: 10.16790/j.cnki.1009-9239.im.2025.04.003
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2025.04.003
  • Receive Date：2024-08-20
  • Online Date：2025-11-07
  • Published：2025-04-20
Article Data
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History
  • Received：2024-08-20
  • Revised：2024-10-14
Funding
Affiliations
    1 Electric Power Research Institute of State Grid Heilongjiang Electric Power Co., Ltd., Harbin 150030, China
    2 Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
    3 China Electric Power Reserch Institute, Beijing 102209, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2025.04.003
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