{"title":"An Omnidirectional, High Power Density Magneto–Mechano–Electric Energy Harvester Using PNN–PZT Piezoceramic Operating in Decoupling Bending Mode","authors":"Wei Peng, Bin Wang, Jianglei Chang, Zhen Liu, Genshui Wang, Zhi Cheng, Liang Ma, Shuxiang Dong","doi":"10.1002/aesr.202400394","DOIUrl":null,"url":null,"abstract":"<p>\nMagneo-mechano-electric energy harvesters (MME-EHs) capture stray magnetic and weak vibration energy from power lines and vehicles. However, efficiently harvesting microenergy from randomly oriented stray magnetic fields remains challenging. We propose a novel MME-EH featuring two cross-arranged, piezoceramic-metal laminated beams with tip magnetic masses. Using Pb(Ni<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>-Pb(Zr<sub>0.3</sub>Ti<sub>0.7</sub>)O<sub>3</sub>-LiNbO<sub>3</sub>(PNN–PZT–LN) ceramic with a high piezoelectric charge coefficient (<i>e</i><sub>33</sub>) and operating in decoupled diagonal symmetric bending modes, this design efficiently harvests omnidirectional stray magnetic energy. The high <i>e</i><sub>33</sub> enables significant output current, while the decoupling design avoids interference between two cross-beams, and diagonal symmetry bending modes with a simple support at the central node can dramatically decrease the clamping energy losses. The portable MME-EH generates a record-high output power of 13.3 mW<sub>avg</sub> under a weak 2Oe magnetic field at 50 Hz. More importantly, its output power changes less than 22% as the magnetic field direction varies from 0° to 360°, demonstrating omnidirectional energy-capturing capability. The harvested energy successfully powers a multisensor Internet of Things system for real-time environmental monitoring, highlighting the potential of high e<sub>33</sub> materials and decoupling strategies for efficient energy harvesting from weak, randomly oriented stray magnetic fields.</p>","PeriodicalId":29794,"journal":{"name":"Advanced Energy and Sustainability Research","volume":"6 6","pages":""},"PeriodicalIF":6.2000,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aesr.202400394","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Energy and Sustainability Research","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/aesr.202400394","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Magneo-mechano-electric energy harvesters (MME-EHs) capture stray magnetic and weak vibration energy from power lines and vehicles. However, efficiently harvesting microenergy from randomly oriented stray magnetic fields remains challenging. We propose a novel MME-EH featuring two cross-arranged, piezoceramic-metal laminated beams with tip magnetic masses. Using Pb(Ni1/3Nb2/3)O3-Pb(Zr0.3Ti0.7)O3-LiNbO3(PNN–PZT–LN) ceramic with a high piezoelectric charge coefficient (e33) and operating in decoupled diagonal symmetric bending modes, this design efficiently harvests omnidirectional stray magnetic energy. The high e33 enables significant output current, while the decoupling design avoids interference between two cross-beams, and diagonal symmetry bending modes with a simple support at the central node can dramatically decrease the clamping energy losses. The portable MME-EH generates a record-high output power of 13.3 mWavg under a weak 2Oe magnetic field at 50 Hz. More importantly, its output power changes less than 22% as the magnetic field direction varies from 0° to 360°, demonstrating omnidirectional energy-capturing capability. The harvested energy successfully powers a multisensor Internet of Things system for real-time environmental monitoring, highlighting the potential of high e33 materials and decoupling strategies for efficient energy harvesting from weak, randomly oriented stray magnetic fields.
期刊介绍:
Advanced Energy and Sustainability Research is an open access academic journal that focuses on publishing high-quality peer-reviewed research articles in the areas of energy harvesting, conversion, storage, distribution, applications, ecology, climate change, water and environmental sciences, and related societal impacts. The journal provides readers with free access to influential scientific research that has undergone rigorous peer review, a common feature of all journals in the Advanced series. In addition to original research articles, the journal publishes opinion, editorial and review articles designed to meet the needs of a broad readership interested in energy and sustainability science and related fields.
In addition, Advanced Energy and Sustainability Research is indexed in several abstracting and indexing services, including:
CAS: Chemical Abstracts Service (ACS)
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Emerging Sources Citation Index (Clarivate Analytics)
INSPEC (IET)
Web of Science (Clarivate Analytics).