Flexible Nanocomposite Generator Made of BaTiO 3 Nanoparticles and Graphitic Carbons

作者：Kwi‐Il Park, M. K. Lee, Ying Liu, San Moon, Geon‐Tae Hwang, Guang Zhu, Ji Eun Kim, Sang Ouk Kim, Do Kyung Kim, Zhong Lin Wang, Keon Jae Lee · 发表于：Advanced Materials · 年份：2012 · DOI：10.1002/adma.201200105 · 被引用次数：711 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Innovative Energy Harvesting Technologies、Dielectric materials and actuators

A nanocomposite generator (NCG) is fabricated using piezoelectric BaTiO3 nanoparticles and universal graphitic carbons (carbon nanotubes and reduced graphene oxide). A piezoelectric nanocomposite is produced by the simple process of dispersing nanoparticles and carbon-based nanomaterials in a polydimethylsiloxane matrix and subsequent spin-casting onto a metal-coated plastic substrate. The NCG device generates an output voltage of ∼3.2 V and a current of ∼350 nA under periodic mechanical deformation to a strain of 0.33%. The generated electric energy is stored in capacitors and used to light up a commercial light-emitting diode.