Coupling of Piezoelectric and Triboelectric Effects: from Theoretical Analysis to Experimental Verification

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Abstract
Both the piezoelectric and triboelectric effects can be utilized to design and realize high‐performance nanogenerators. In addition, the structures of longitudinal piezoelectric nanogenerator (PENG) and single‐electrode triboelectric nanogenerator (TENG) show great similarity, which may bring possible combinations of these two types of nanogenerators. Here, the first theoretical investigation of the coupling between these two effects and the corresponding piezoelectric–triboelectric hybrid nanogenerators (PE–TENGs) are presented. The output performance of PE–TENGs with different structures, polarization directions, electrode connections, and the piezoelectric–triboelectric coupling modes, are systematically studied and compared, which provides a guidance for the purposely design of PE–TENGs. Moreover, experimental measurements of different PE–TENGs are further conducted and show high consistency with the numerical results. The theoretical and experimental output of PE–TENGs both possess unique characteristics such as the dependence of configurations, the controllable enhancing/weakening trend and amplitude, and multi‐level output, which may bring brand‐new applications in the fields of antistatic protection, power supply, logic devices, and self‐powered sensors.
Funding Information
  • National Natural Science Foundation of China (61176103, 91323304)
  • National Hi-tech Research and Development Program of China (2013AA041102)
  • National Ph.D. Foundation Project (20110001110103)
  • Beijing Natural Science Foundation of China (4141002)

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