Development of Turbocharging‐Ability Hybrid Nanogenerators Comprising Bipolar PVDF‐HFP/MXene Electrospun Composites

Abstract Coupling piezo‐active and triboelectric materials has recently emerged as an effective technique for developing high‐performance hybrid nanogenerators (HNGs). This is the first paper to report the fabrication of piezo‐active poly(vinylidene fluoride‐hexafluoropropylene)(PVDF‐HFP)/MXene‐based hybrid composite fibers through conventional electrospinning. Here, the effect of MXene content (1–5%) on the surface potential and electrical performance of the as‐synthesized composites is investigated and optimized. PVDF‐HFP/3% MXene (PHM3)/Nylon 12+A‐rGo (NY2)‐HNG, which contains the best‐performing composite (PMH3; containing 3% of MXene), exhibits turbocharging properties (charging a 10 µF capacitor with 16 V within 100 s) and can continuously operate low‐power electronics. Interestingly, PHM3 (with a negative surface potential) is transformed into PPHM3 (with a positive surface potential of +2190 V) via corona poling. This study proposes a new class of HNGs containing frictional layers comprising bipolar PVDF‐HFP/3% MXene composites (PHM3/PPHM3‐HNG) with an excellent output performance of 297 V and 5.1 µA that exhibit broad application prospects in energy harvesting.