Novel Piezoelectric Paper-Based Flexible Nanogenerators Composed of BaTiO3 Nanoparticles and Bacterial Cellulose.

Guangjie Zhang,Qijie Liang,Yue Zhang,Yingli Zhao,Zheng Zhang,Xin Zheng,Qingliang Liao

doi:10.1002/advs.201500257

Abstract

A piezoelectric paper based on BaTiO3 (BTO) nanoparticles and bacterial cellulose (BC) with excellent output properties for application of nanogenerators (NGs) is reported. A facile and scalable vacuum filtration method is used to fabricate the piezoelectric paper. The BTO/BC piezoelectric paper based NG shows outstanding output performance with open‐circuit voltage of 14 V and short‐circuit current density of 190 nA cm−2. The maximum power density generated by this unique BTO/BC structure is more than ten times higher than BTO/polydimethylsiloxane structure. In bending conditions, the NG device can generate output voltage of 1.5 V, which is capable of driving a liquid crystal display screen. The improved performance can be ascribed to homogeneous distribution of piezoelectric BTO nanoparticles in the BC matrix as well as the enhanced stress on piezoelectric nanoparticles implemented by the unique percolated networks of BC nanofibers. The flexible BTO/BC piezoelectric paper based NG is lightweight, eco‐friendly, and cost‐effective, which holds great promises for achieving wearable or implantable energy harvesters and self‐powered electronics.

Highlights

A piezoelectric paper based on BaTiO3 (BTO) nanoparticles and bacterial cellulose (BC) with excellent output properties for application of nanogenerators (NGs) is reported
The X-ray diffraction (XRD) pattern of the BC membrane is shown in the inset of Figure 1e
Thermogravimetry analyses (TGA) in the inset of Figure 1g exhibits that pristine BC undergoes decomposition in two steps with degradation temperatures at around

Summary

Introduction

A piezoelectric paper based on BaTiO3 (BTO) nanoparticles and bacterial cellulose (BC) with excellent output properties for application of nanogenerators (NGs) is reported. The flexible BTO/BC piezoelectric paper based NG is lightweight, eco-friendly, and costeffective, which holds great promises for achieving wearable or implantable energy harvesters and self-powered electronics. Y. Zhang Key Lab for New Energy and Nanotechnology University of Science and Technology Beijing Beijing 100083, P.R. China piezoelectric output.[21] it is challenging to get such a well-distribution because most of the flexible matrix materials used are often sticky and hydrophobic, which makes it hard for ceramic nanoparticles to separate sufficiently.

Results

Conclusion