Core-shell nanospheres were prepared by the homogeneous coating of piezoelectric ZnO nanorod aggregates with triboelectric microporous organic polymer (MOP). The small energy harvesting performance of ZnO@MOP was significantly enhanced, compared with those of ZnO and MOP, due to the piezoelectrification-induced polarization of inner ZnO and the enhanced generation of tribopositive charges of MOP. Piezo-triboelectric nanogenerators (PTENGs) fabricated with ZnO@MOP showed peak-to-peak voltages of up to 534 V and a maximum power density of 1.19 mW cm−2. In addition, the PTENGs showed excellent durability for 30 000 cycles, demonstrating as efficient power sources for charging electrolytic capacitors and for operating 200 green light emitting diode bulbs.
|Journal||Angewandte Chemie - International Edition|
|Publication status||Published - 2022 Nov 14|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant (No. 2020R1A2C2004310 and No. 2022R1A3B1078291) funded by the Korea government (MSIT).
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