An Omnidirectional, High Power Density Magneto–Mechano–Electric Energy Harvester Using PNN–PZT Piezoceramic Operating in Decoupling Bending Mode

IF 6.2 Q2 ENERGY & FUELS
Wei Peng, Bin Wang, Jianglei Chang, Zhen Liu, Genshui Wang, Zhi Cheng, Liang Ma, Shuxiang Dong
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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.

Abstract Image

利用PNN-PZT压电陶瓷在解耦弯曲模式下工作的全向、高功率密度磁-机电能量采集器
磁-机-电能量采集器(MME-EHs)从输电线和车辆中捕获杂散的磁性和弱振动能量。然而,有效地从随机方向的杂散磁场中收集微能量仍然是一个挑战。我们提出了一种新颖的MME-EH,具有两个交叉排列的压电陶瓷-金属层压梁,其尖端具有磁性质量。本设计采用具有高压电电荷系数(e33)的Pb(Ni1/3Nb2/3)O3-Pb(Zr0.3Ti0.7)O3-LiNbO3(PNN-PZT-LN)陶瓷,工作在解耦对角对称弯曲模式下,有效地收集全向杂散磁能。高e33使输出电流显著,而解耦设计避免了两个横梁之间的干扰,并且在中心节点采用简单支撑的对角对称弯曲模式可以显着降低夹紧能量损失。便携式MME-EH在50 Hz的弱20 e磁场下产生13.3 mwag的高输出功率。更重要的是,当磁场方向从0°到360°变化时,其输出功率变化小于22%,具有全方位的能量捕获能力。收集的能量成功地为多传感器物联网系统提供动力,用于实时环境监测,突出了高e33材料和解耦策略的潜力,可以有效地从弱随机方向的杂散磁场中收集能量。
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来源期刊
CiteScore
8.20
自引率
3.40%
发文量
0
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) Directory of Open Access Journals (DOAJ) Emerging Sources Citation Index (Clarivate Analytics) INSPEC (IET) Web of Science (Clarivate Analytics).
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