Department of Physics, Jadavpur University , Kolkata 700032, India.
Department of Physics, Netaji Nagar College for Women , Kolkata 700092, India.
ACS Appl Mater Interfaces. 2017 Jul 12;9(27):23048-23059. doi: 10.1021/acsami.7b08008. Epub 2017 Jun 27.
The design of an energy-harvesting unit with superior output characteristics, i.e., high power density, is a great technological challenge in the present time. Here, simple, lightweight, flexible, and cost-effective piezoelectric nanogenerators (PENGs) have been fabricated by integrating the aluminum electrodes onto Er/Fe stimulated electroactive, visible-light-emitting, and large dielectric PVDF films in which ErCl·6HO and Fe(NO)·9HO act as the catalytic agents for electroactive β polymorph nucleation and the enhancement of dielectric properties. The developed PENGs exhibit excellent energy-harvesting performance with very high power density and very fast charging ability compared with the previously reported PVDF-assisted prototype nanogenerators. The PENGs lead to very large power density (∼160 and ∼55.34 mW cm) under periodic finger imparting for Er- and Fe-stimulated PVDF-film-based energy-harvester units, respectively. The fabricated self-powered PENG is also able to light up 54 commercially available light-emitting diodes.
设计具有优越输出特性的能量收集单元，即高功率密度，是当前面临的一项重大技术挑战。在这里，通过将铝电极集成到 Er/Fe 刺激的电活性、可见发光和具有大介电常数的 PVDF 薄膜上，制备了简单、轻量、灵活且具有成本效益的压电纳米发电机 (PENG)，其中 ErCl·6HO 和 Fe(NO)·9HO 用作电活性β多晶形核的催化剂，并提高介电性能。与之前报道的基于 PVDF 辅助原型纳米发电机相比，所开发的 PENG 具有出色的能量收集性能，具有非常高的功率密度和非常快的充电能力。在周期性手指施加的作用下，基于 Er 和 Fe 刺激的 PVDF 薄膜的能量收集单元分别产生非常大的功率密度（约 160 和 55.34 mW cm）。所制造的自供电 PENG 还能够点亮 54 个市售发光二极管。
