Fabrication of triboelectric polymer films via repeated rheological forging for ultrahigh surface charge density

Zhaoqi Liu, Yunzhi Huang, Yuxiang Shi, Xinglin Tao, Hezhi He, Feida Chen, Zhao-Xia Huang (), Zhong Lin Wang, Xiangyu Chen () and Jin-Ping Qu ()
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Zhaoqi Liu: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
Yunzhi Huang: South China University of Technology
Yuxiang Shi: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
Xinglin Tao: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
Hezhi He: South China University of Technology
Feida Chen: Nanjing University of Aeronautics and Astronautics
Zhao-Xia Huang: South China University of Technology
Zhong Lin Wang: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
Xiangyu Chen: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
Jin-Ping Qu: South China University of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Triboelectric polymer with high charge density is the foundation to promote the wide range of applications of triboelectric nanogenerators. This work develops a method to produce triboelectric polymer based on repeated rheological forging. The fluorinated ethylene propylene film fabricated by repeated forging method not only has excellent mechanical properties and good transmittance, but also can maintain an ultrahigh tribo-charge density. Based on the film with a thickness of 30 μm, the output charge density from contact-separation nanogenerator reaches 352 μC·m−2. Then, the same film is applied for the nanogenerator with air-breakdown mode and a charge density of 510 μC·m−2 is further achieved. The repeated forging method can effectively regulate the composition of surface functional groups, the crystallinity, and the dielectric constants of the fluorinated ethylene propylene, leading to the superior capability of triboelectrification. Finally, we summarize the key parameters for elevating the electrification performance on the basis of molecular structure and related fabrication crafts, which can guide the further development of triboelectric polymers.

Date: 2022
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DOI: 10.1038/s41467-022-31822-2

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