Poly(dimethylsiloxane)/ZnO Nanoflakes/Three-Dimensional Graphene Heterostructures for High-Performance Flexible Energy Harvesters with Simultaneous Piezoelectric and Triboelectric Generation

ACS Applied Materials & Interfaces
Yongteng Qian, Dae Joon Kang

Abstract

Herein, we report the successful synthesis of poly(dimethylsiloxane)/ZnO nanoflakes/three-dimensional graphene (PDMS/ZnO NFs/3D Gr) heterostructures using Ni foams as the template substrate via a facile route, while adapting a rational material design for a high-performance energy-harvester application. The PDMS/ZnO NFs/3D Gr heterostructure-based hybrid energy harvester simultaneously exploits the piezoelectric effect and triboelectrification and shows peak-to-peak output voltages up to 122 V and peak-to-peak current densities up to 51 μA cm-2, resulting in an ultrahigh power density of 6.22 mW cm-2. Furthermore, we have evaluated the performance of the PDMS/ZnO NFs/3D Gr heterostructure-based hybrid energy harvester by demonstrating its capacity to instantaneously power up 68 commercially available light-emitting diodes without the need for an additional energy-storage device. The excellent performance of these energy harvesters suggests that PDMS/ZnO NFs/3D Gr heterostructures present a viable strategy for the development of high-performance, flexible, wearable energy-harvesting devices.

References

Apr 15, 2006·Science·Zhong Lin Wang, Jinhui Song
Jan 11, 2008·Nature·Allon I HochbaumPeidong Yang
Mar 11, 2010·Advanced Materials·Chang LiuHui-Ming Cheng
Apr 9, 2010·Advanced Materials·Dukhyun ChoiJong Min Kim
Nov 8, 2011·Advanced Materials·Youfan HuZhong Lin Wang
Nov 5, 2013·ACS Nano·Weiqing YangZhong Lin Wang
Mar 21, 2015·Scientific Reports·Woo-Suk JungChong-Yun Kang
Aug 20, 2015·ACS Applied Materials & Interfaces·Xinda LiHyun-Joong Chung
Jan 11, 2016·Advanced Materials·Feng Ru FanZhong Lin Wang

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