A rationally designed output current measurement procedure and comprehensive understanding of the output characteristics for piezoelectric nanogenerators

Abstract Scavenging energy by piezoelectric nanogenerators (PENG) has been spotlighted as a promising approach to convert tiny mechanical energy into electricity. Many works have been done to improve the measurement techniques as well as reveal the output characteristics of PENGs. However, for the precise measurement of the output current, there still remains uncertainty stems from the effect of strain rate when applying mechanical impact onto PENGs. Herein, a theoretical derivation is performed to prove the existence of the maximum peak current (MPC) for PENGs, which is not influenced by strain rate but only determined by the magnitude of the applied force and inherent parameters of PENGs. A rationally designed procedure is proposed to measure the MPC with high accuracy and stability, from which an analytical model describing the MPC is established. The influence of device capacitance and the applied force on the output characteristics of PENGs are revealed, from which essential rules pertaining to the characterization and optimization for PENGs are proposed. Through this study, we can get comprehensive insight into the output characteristics of PENGs and acquire new guidelines for purpose design of PENGs and corresponding power management circuits.

[1]  Seung Hwan Ko,et al.  A Hyper‐Stretchable Elastic‐Composite Energy Harvester , 2015, Advanced materials.

[2]  Zheng Zhang,et al.  High output piezoelectric nanocomposite generators composed of oriented BaTiO3 NPs@PVDF , 2015 .

[3]  Chong-Yun Kang,et al.  Embossed Hollow Hemisphere‐Based Piezoelectric Nanogenerator and Highly Responsive Pressure Sensor , 2014 .

[4]  Zhong-Lin Wang.  Energy Harvesting Using Piezoelectric Nanowires–A Correspondence on “Energy Harvesting Using Nanowires?” by Alexe et al. , 2009 .

[5]  Liming Dai,et al.  Characteristics of output voltage and current of integrated nanogenerators , 2009 .

[6]  Dukhyun Choi,et al.  Highly anisotropic power generation in piezoelectric hemispheres composed stretchable composite film for self-powered motion sensor , 2015 .

[7]  Jinhan Cho,et al.  Layer‐by‐Layer Controlled Perovskite Nanocomposite Thin Films for Piezoelectric Nanogenerators , 2014 .

[8]  Joo-Yun Jung,et al.  Lithium-doped zinc oxide nanowires-polymer composite for high performance flexible piezoelectric nanogenerator. , 2014, ACS nano.

[9]  Paul M. Weaver,et al.  Measurement techniques for piezoelectric nanogenerators , 2013 .

[10]  Henry A. Sodano,et al.  A Low‐Frequency Energy Harvester from Ultralong, Vertically Aligned BaTiO3 Nanowire Arrays , 2014 .

[11]  Ju-Hyuck Lee,et al.  Micropatterned P(VDF‐TrFE) Film‐Based Piezoelectric Nanogenerators for Highly Sensitive Self‐Powered Pressure Sensors , 2015 .

[12]  Zhong Lin Wang,et al.  Lateral nanowire/nanobelt based nanogenerators, piezotronics and piezo-phototronics , 2010 .

[13]  Guang Zhu,et al.  Converting biomechanical energy into electricity by a muscle-movement-driven nanogenerator. , 2009, Nano letters.

[14]  Henry A. Sodano,et al.  A review of power harvesting using piezoelectric materials (2003–2006) , 2007 .

[15]  Ji-Min Choi,et al.  Piezoelectric nanogenerator with a nanoforest structure , 2013 .

[16]  Pei Lin,et al.  Functional nanogenerators as vibration sensors enhanced by piezotronic effects , 2014, Nano Research.

[17]  Qingliang Liao,et al.  Scanning Probe Study on the Piezotronic Effect in ZnO Nanomaterials and Nanodevices , 2012, Advanced materials.

[18]  Geon-Tae Hwang,et al.  A Reconfigurable Rectified Flexible Energy Harvester via Solid‐State Single Crystal Grown PMN–PZT , 2015 .

[19]  Geon-Tae Hwang,et al.  Large‐Area and Flexible Lead‐Free Nanocomposite Generator Using Alkaline Niobate Particles and Metal Nanorod Filler , 2014 .

[20]  Zhong Lin Wang,et al.  Power generation with laterally packaged piezoelectric fine wires. , 2009, Nature nanotechnology.

[21]  Markus Mohr,et al.  Flexible piezoelectric nanogenerators based on a fiber/ZnO nanowires/paper hybrid structure for energy harvesting , 2014, Nano Research.

[22]  John A Rogers,et al.  Conformal piezoelectric energy harvesting and storage from motions of the heart, lung, and diaphragm , 2014, Proceedings of the National Academy of Sciences.

[23]  Elias Siores,et al.  Novel “3-D spacer” all fibre piezoelectric textiles for energy harvesting applications , 2014 .

[24]  Zheng Zhang,et al.  Novel Piezoelectric Paper‐Based Flexible Nanogenerators Composed of BaTiO3 Nanoparticles and Bacterial Cellulose , 2015, Advanced science.

[25]  Chang Kyu Jeong,et al.  Highly‐Efficient, Flexible Piezoelectric PZT Thin Film Nanogenerator on Plastic Substrates , 2014, Advanced materials.

[26]  Rui Li,et al.  Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter , 2015 .

[27]  Zheng Zhang,et al.  Performance and service behavior in 1-D nanostructured energy conversion devices , 2015 .

[28]  Zhong Lin Wang,et al.  Functional electrical stimulation by nanogenerator with 58 V output voltage. , 2012, Nano letters.

[29]  J. Sirohi,et al.  Fundamental Understanding of Piezoelectric Strain Sensors , 1999, Smart Structures.