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Greatly enhanced breakdown strength and energy density in ultraviolet-irradiated polypropylene

Journal Article


Abstract


  • Polymer dielectrics have drawn great attentions for applications in advanced electronic devices and power grids because of their high breakdown strength, low dielectric loss, and excellent flexibility. However, the low energy density in polymer dielectric capacitors will hinder the continuous miniaturization of electrical systems. In this work, ultraviolet irradiation is demonstrated to greatly enhance the breakdown strength and energy density of polypropylene. Dramatically improved breakdown strength of 867��MV/m and discharged energy density of 8.0��J/cm3, together with the high energy efficiency of >90%, were simultaneously achieved in polypropylene after ultraviolet irradiation. Our research shows that proper ultraviolet irradiation can effectively improve the energy density of polypropylene without sacrificing its high charge-discharge efficiency, being potential for applications in power electronics and pulse electric systems.

Publication Date


  • 2021

Citation


  • Chen, J., Li, B. W., Sun, Y., Zhang, P., Shen, Z., Zhang, X., . . . Zhang, S. (2021). Greatly enhanced breakdown strength and energy density in ultraviolet-irradiated polypropylene. IET Nanodielectrics, 4(4), 223-228. doi:10.1049/nde2.12022

Scopus Eid


  • 2-s2.0-85122111091

Start Page


  • 223

End Page


  • 228

Volume


  • 4

Issue


  • 4

Place Of Publication


Abstract


  • Polymer dielectrics have drawn great attentions for applications in advanced electronic devices and power grids because of their high breakdown strength, low dielectric loss, and excellent flexibility. However, the low energy density in polymer dielectric capacitors will hinder the continuous miniaturization of electrical systems. In this work, ultraviolet irradiation is demonstrated to greatly enhance the breakdown strength and energy density of polypropylene. Dramatically improved breakdown strength of 867��MV/m and discharged energy density of 8.0��J/cm3, together with the high energy efficiency of >90%, were simultaneously achieved in polypropylene after ultraviolet irradiation. Our research shows that proper ultraviolet irradiation can effectively improve the energy density of polypropylene without sacrificing its high charge-discharge efficiency, being potential for applications in power electronics and pulse electric systems.

Publication Date


  • 2021

Citation


  • Chen, J., Li, B. W., Sun, Y., Zhang, P., Shen, Z., Zhang, X., . . . Zhang, S. (2021). Greatly enhanced breakdown strength and energy density in ultraviolet-irradiated polypropylene. IET Nanodielectrics, 4(4), 223-228. doi:10.1049/nde2.12022

Scopus Eid


  • 2-s2.0-85122111091

Start Page


  • 223

End Page


  • 228

Volume


  • 4

Issue


  • 4

Place Of Publication