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Performance of PDMS-Based Triboelectric Nanogenerators

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Performance of PDMS-Based Triboelectric Nanogenerators ( performance-pdms-based-triboelectric-nanogenerators )

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Figure 3: (a) Open-circuit voltage, (b) short-circuit current, (c) mean open-circuit voltage and (d) mean short-circuit current obtained for different areas of the triboelectric surfaces. The inset is the area dependence of the maximum power. tendency with the increase of sample area and reaching an output power of 0.5 μW (corresponding to a power density of 0.33 mW/m2). 4. Conclusion In summary, we studied the influence of the thickness of the triboelectric layer and of the contact area of the triboelectric surfaces on the triboelectric effect. By changing the PDMS thickness layer, we obtained the relationship between the PDMS thickness layer and the electrical output, when PDMS comes into contact with Nylon. With increasing PDMS thickness, the voltage values decreased but the current increased. The maximum output power occurred for a PDMS layer thickness of 32 μm and had a value of 0.56 μW. We also observed that increasing the contact surface of the triboelectric materials increases the electrical output generated for the contact-separation of the tribo-pair PDMS-Nylon. For a surface area of 15 cm2, we achieved an output power density of 0.33 mW/m2. Acknowledgments The authors acknowledge funding from FEDER and ON2 through project UTAP-EXPL/NTec/0021/2017 and from FCT through the Associated Laboratory Institute of Nanoscience and Nanotechnology (POCI- 01-0145-FEDER-016623). J. V. acknowledges financial support through FSE/POPH and project UTAP- EXPL/NTec/0021/2017. C. R. thanks inanoEnergy for the research grant. 5

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