Enhancing triboelectric performance of poly(vinylidene fluoride) by aliphatic hyperbranced polyester
발표자
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초록
내용
Triboelectric nanogenerators (TENGs) are a promising energy harvesting technology that can convert mechanical energy into electrical energy, with the key challenge being to increase conversion efficiency. To achieve this, a high electron affinity difference between tribo-negative and tribo-positive layers is required. This study explored the influence of aliphatic hyperbranched polyester of 1st generation (HBP-G1) on triboelectric performance of poly(vinylidene fluoride) (PVDF). HBP-G1 was synthesized by introducing pentaerythritol core and dimethylol propionic acid monomer through one-step poly-condensation method. We investigated the properties and TENG performance of PVDF/HBP-G1 electrospun membranes with different compositions. The optimized TENG with aluminum as tribo-positive layer generated Voc and Isc of 65 V and 1.76 µA, which are 3 and 2 times higher than those of the pristine TENG, respectively. These results show the effect of HBP-G1 on triboelectric performance of PVDF.