Lead‐Free Perovskite Nanowire‐Employed Piezopolymer for Highly Efficient Flexible Nanocomposite Energy Harvester

• DOI: 10.1002/smll.201704022
• Publication Date: 2018-04-14T23:31:16Z
• Authors: Chang Kyu Jeong; Changyeon Baek; Angus I. Kingon; Kwi‐Il Park; Seung‐Hyun Kim
• Keywords: Wearable Technology; Nanogenerator; Mechanical energy

Abstract In the past two decades, mechanical energy harvesting technologies have been developed in various ways to support or power small‐scale electronics. Nevertheless, strategy for enhancing current and charge performance of flexible piezoelectric harvesters using a simple cost‐effective process is still challenging issue. Herein, 1D–3D (1‐3) fully nanocomposite perovskite BaTiO 3 (BT) nanowire (NW)‐employed poly(vinylidene fluoride‐ co ‐trifluoroethylene) (P(VDF‐TrFE)) high‐performance hybrid generator (hNCG) device. The harvested output hNCG reaches up ≈14 V ≈4 µA, which higher than levels even previous piezoceramic film‐based harvesters. Finite element analysis method simulations study that outstanding devices attributes not only synergy well‐controlled BT NWs within P(VDF‐TrFE) matrix, but also effective stress transferability piezopolymer. As proof concept, directly attached hand scavenge human motion biomechanical frequencies self‐powered wearable patch device applications. This research can pave way new approach biocompatible self‐sufficient