Zinc Oxide-Enhanced Piezoelectret Polypropylene Microfiber for Mechanical Energy Harvesting

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This paper reports zinc oxide (ZnO)-coated piezoelectret polypropylene (PP) microfibers with a structure of two opposite arc-shaped braces for enhanced mechanical energy harvesting. The ZnO film was coated onto PP microfibers via magnetron sputtering to form a ZnO/PP compound structure. Triboelectric Nanogenerator (TENG) based on ZnO/PP microfiber compound film was carefully designed with two opposite arc-shaped braces. The results of this study demonstrated that the mechanical energy collection efficiency of TENG based on piezoelectret PP microfiber was greatly enhanced by the coated ZnO and high-voltage corona charging method. We found that, with the step-increased distance of traveling for the movable carbon black electrode, an electrical power with an approximately quadratic function of distance was generated by this mechanical-electrical energy conversion, because more PP microfibers were connected to the electrode. Further, with a full contact condition, the peak of the generated voltage, current, and charges based on the ZnO/PP microfibers by this mechanical- electrical energy conversion with 1 m/s(2) reached 120 V, 3 mu A, and 49 nC, respectively. Moreover, a finger-tapping test was used to demonstrate that the ZnO/PP microfiber TENG is capable of lighting eight light-emitting diodes.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-06
Language
English
Article Type
Article
Keywords

TRIBOELECTRIC NANOGENERATOR; VIBRATION ENERGY; ELECTRIFICATION; PERFORMANCE; EFFICIENCY; ELECTRETS

Citation

ACS APPLIED MATERIALS & INTERFACES, v.10, no.23, pp.19940 - 19947

ISSN
1944-8244
DOI
10.1021/acsami.8b02458
URI
http://hdl.handle.net/10203/244310
Appears in Collection
ME-Journal Papers(저널논문)
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