An effective flexible wireless energy harvester/sensor based on porous electret piezoelectric polymer

被引：52
作者：
Mahanty, Biswajit [1 ,2 ]
Ghosh, Sujoy Kumar [1 ]
Garain, Samiran [1 ]
Mandal, Dipankar [1 ]
机构：
[1] Jadavpur Univ, Dept Phys, Organ Nanopiezoelect Device Lab, Kolkata 700032, India
[2] Saroj Mohan Inst Technol, Dept Elect & Commun Engn, Hooghly 712512, India
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2017年 / 186卷
关键词：
Porous; ZnO etching; Energy harvester; Piezoelectric; Nanogenerator; Electrets; FERROELECTRIC POLYMERS; NANOGENERATOR; FILMS; REALIZATION; ALIGNMENT;
D O I：
10.1016/j.matchemphys.2016.11.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A flexible sponge-like nanogenerator (FSNG) based on ZnO nanoparticles (NPs) etched porous electret poly (vinylidene fluoride hexafluoropropylene) (P(VDF-HFP)) film is spotlighted without any electrical poling treatment. It possesses improved dielectric and ferroelectric properties than neat P(VDF-HFP) film. The FSNG harvests an open-circuit voltage (V-oc) of 9 V and short circuit current (I-sc) of 1.3 mu Acm(-2) under repeated mechanical impact of 036 MPa stress amplitude on the top surface. With the power density (P) of 1.21 mW/cm(2) and energy conversion efficiency of 0.3% it directly operates several consumer-electronics. The highly sensitive (similar to 1 mu VPa-1) FSNG is demonstrated as a self-powered wireless sensor with 3.0% efficiency for detecting some tiny human activities including finger movements. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：327 / 332
页数：6
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