scholarly journals Giant pyroelectric energy harvesting and a negative electrocaloric effect in multilayered nanostructures

2016 ◽  
Vol 9 (4) ◽  
pp. 1335-1345 ◽  
Author(s):  
Gaurav Vats ◽  
Ashok Kumar ◽  
Nora Ortega ◽  
Chris R. Bowen ◽  
Ram S. Katiyar
Keyword(s):  
Energy Harvesting ◽  
Electrocaloric Effect ◽  
Layered Nanostructures ◽  
Multilayered Nanostructures

This work examines the potential of PbZr0.53Ti0.47O3/CoFe2O4 (PZT/CFO) multi-layered nanostructures (MLNs) to achieve a giant electrocaloric effect (ECE) and enhanced pyroelectric energy harvesting.

Comment on “Giant pyroelectric energy harvesting and a negative electrocaloric effect in multilayered nanostructures” by G. Vats, A. Kumar, N. Ortega, C. R. Bowen and R. S. Katiyar, Energy Environ. Sci., 2016, 9, 1335

2021 ◽  
Author(s):  
Xin Chen ◽  
Vladimir Shvartsman ◽  
Doru C. Lupascu ◽  
Q. M. Zhang
Keyword(s):  
Energy Harvesting ◽  
Ferroelectric Phase ◽  
Hysteresis Loops ◽  
Electrocaloric Effect ◽  
Maxwell Relation ◽  
Multilayered Nanostructures ◽  
Energy Environ

In the ferroelectric phase, the change of polarization with temperature from partially switched polarization hysteresis loops has no relation with the electrocaloric effect (ECE) and hence cannot be used in Maxwell relation to deducing ECE.

Reply to the ‘Comment on “Giant pyroelectric energy harvesting and a negative electrocaloric effect in multilayered nanostructures”’ by X. Chen, V. Shvartsman, D. C. Lupascu and Q. M. Zhang, Energy Environ. Sci., 2021, DOI: 10.1039/D0EE02548H

2021 ◽  
Author(s):  
Gaurav Vats ◽  
Ashok Kumar ◽  
Chris R. Bowen ◽  
Nora Ortega ◽  
Ram S. Katiyar
Keyword(s):  
Thin Film ◽  
Energy Harvesting ◽  
Scientific Community ◽  
Electrocaloric Effect ◽  
Detailed Explanation ◽  
Multilayered Nanostructures ◽  
Energy Environ

A detailed explanation of the calculations for the electrocaloric effect (ECE) performance of thin-film heterostructures for motivating the scientific community to carry out experiments for validation.

Pyroelectric energy harvesting capabilities and electrocaloric effect in lead-free Sr Ba1-Nb2O6 ferroelectric ceramics

2019 ◽  
Vol 791 ◽  
pp. 1038-1045 ◽  
Author(s):  
Hui Tang ◽  
Xin-Gui Tang ◽  
Ming-Ding Li ◽  
Qiu-Xiang Liu ◽  
Yan-Ping Jiang
Keyword(s):  
Energy Harvesting ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Electrocaloric Effect

Electrocaloric effect and pyroelectric energy harvesting in diffuse ferroelectric Ba(Ti1-xCex)O3 ceramics

2019 ◽  
Vol 43 (1-4) ◽  
pp. 106-116 ◽  
Author(s):  
Y. Zhao ◽  
X. Q. Liu ◽  
S. Y. Wu ◽  
X. M. Chen
Keyword(s):  
Energy Harvesting ◽  
Electrocaloric Effect

Analysis of magneto rheological elastomers for energy harvesting systems

2020 ◽  
Vol 64 (1-4) ◽  
pp. 439-446
Author(s):  
Gildas Diguet ◽  
Gael Sebald ◽  
Masami Nakano ◽  
Mickaël Lallart ◽  
Jean-Yves Cavaillé
Keyword(s):  
Magnetic Field ◽  
Energy Harvesting ◽  
Shear Strain ◽  
Magnetic Induction ◽  
Magnetic Particles ◽  
Homogeneous Magnetic Field ◽  
Electrical Signal ◽  
Harvesting Systems ◽  
Dc Bias ◽  
Magneto Rheological

Magneto Rheological Elastomers (MREs) are composite materials based on an elastomer filled by magnetic particles. Anisotropic MRE can be easily manufactured by curing the material under homogeneous magnetic field which creates column of particles. The magnetic and elastic properties are actually coupled making these MREs suitable for energy conversion. From these remarkable properties, an energy harvesting device is considered through the application of a DC bias magnetic induction on two MREs as a metal piece is applying an AC shear strain on them. Such strain therefore changes the permeabilities of the elastomers, hence generating an AC magnetic induction which can be converted into AC electrical signal with the help of a coil. The device is simulated with a Finite Element Method software to examine the effect of the MRE parameters, the DC bias magnetic induction and applied shear strain (amplitude and frequency) on the resulting electrical signal.

Simply supported FPEDs connected by springs for broadband energy harvesting

2020 ◽  
Vol 64 (1-4) ◽  
pp. 201-210
Author(s):  
Yoshikazu Tanaka ◽  
Satoru Odake ◽  
Jun Miyake ◽  
Hidemi Mutsuda ◽  
Atanas A. Popov ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Evaluation Method ◽  
Energy Harvester ◽  
Vibrational Energy ◽  
Functional Materials ◽  
Vibration Energy ◽  
Theoretical Evaluation ◽  
Vibration Energy Harvester ◽  
Polyvinylidene Difluoride ◽  
Simply Supported

Energy harvesting methods that use functional materials have attracted interest because they can take advantage of an abundant but underutilized energy source. Most vibration energy harvester designs operate most effectively around their resonant frequency. However, in practice, the frequency band for ambient vibrational energy is typically broad. The development of technologies for broadband energy harvesting is therefore desirable. The authors previously proposed an energy harvester, called a flexible piezoelectric device (FPED), that consists of a piezoelectric film (polyvinylidene difluoride) and a soft material, such as silicon rubber or polyethylene terephthalate. The authors also proposed a system based on FPEDs for broadband energy harvesting. The system consisted of cantilevered FPEDs, with each FPED connected via a spring. Simply supported FPEDs also have potential for broadband energy harvesting, and here, a theoretical evaluation method is proposed for such a system. Experiments are conducted to validate the derived model.

Energy Harvesting Using Piezoelectric Materials on Microcantilevr Structure

2012 ◽  
Vol 2 (5) ◽  
pp. 252-255
Author(s):  
Rudresha K J Rudresha K J ◽  
◽  
Girisha G K Girisha G K
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Materials
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