Hybrid nanogenerator of BaTiO3 nanowires and CNTs for harvesting energy
Lead-free piezoelectric nano-based generator with energy harvesting has drawn a great attention in the recent years. BaTiO3 as a lead-free material with high piezoelectric coefficient and dielectric constant has been widely examined to realize nanogenerators. In this work, high-quality BaTiO3 (BTO) nanowires were prepared by hydrothermal synthesis as the piezoelectric material and then BTO/PVDF-based nanogenerators have been fabricated. Furthermore, the CNTs were added to improve the output voltage performance of the nanogenerator. It shows high performance of a maximum output voltage density of 7.3 V/cm2 and the stable current density of 3.3 nA/cm2. This hybrid nanogenerator with enhanced performance is a potential material for the application in harvesting energy, self-powered electronics and low-frequency capacitors.
This work was supported by the National Natural Science Foundation of China (No. 51671098), the Natural Science Foundation of Gansu Province (No. 17JR5RA210) and the Fundamental Research Funds for the Central Universities (lzujbky-2015-122).
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