Boosting the lifespan of magneto-mechano-electric generator via vertical installation for sustainable powering of Internet of Things sensor

Kwak, Min Sub and Peddigari, Mahesh and Min, Yuho and et al, . (2022) Boosting the lifespan of magneto-mechano-electric generator via vertical installation for sustainable powering of Internet of Things sensor. Nano Energy, 101. pp. 1-12. ISSN 2211-2855

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Sustainability is essential for magneto-mechano-electric (MME) energy harvesters that convert low-frequency magnetic noise into useful electrical energy to be considered a practical power source for implementing real-life Internet of Things (IoT) sensor networks. In this study, we propose a vertically installed MME energy harvester based on a piezoelectric lead magnesium niobate-lead zirconate titanate (Pb(Mn1/3Nb2/3)O3-Pb(Zr,Ti)O3, PMN-PZT) single-crystal macro fiber composite cantilever. The MME harvester generates 12.2 mW output power from a low-amplitude stray magnetic field of 2.5 Oe and exhibits a long-term usable lifetime of 2.5 × 109 cycles while maintaining over 90 % of its output. An accelerated life test method is employed to predict the usable lifetime of the MME harvester using an inverse power law-Weibull model with accelerating stress of magneto-mechanical vibration-induced strain. In addition, a standalone wireless environmental monitoring system is demonstrated to operate for 10 weeks by exploiting the harvested power from stray magnetic fields (~2.2 Oe) near the power cables of home appliances. This study paves the way for lifetime assessment and prediction of sustainable MME harvesters to increase the practicability of self-powered IoT devices in smart infrastructures. © 2022 The Authors

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IITH Creators:
IITH CreatorsORCiD
Peddigari, MaheshUNSPECIFIED
Item Type: Article
Additional Information: This work is funded by a Korea Institute of Materials Science ( PNK8240 ), a National Research Council of Science & Technology (NST) grant by the Korean government (MSIP) (No. CAP-17–04-KRISS ), and a National Research Foundation of Korea (NRF) grant funded by the Korean government ( MSIT ) (No. 2020R1F1A107422211 ), and a Korea Medical Device Development Fund grant funded by the Korea Government (No. KMDF_PR_20210527_0007–2021-02 ).
Uncontrolled Keywords: Accelerated life test; Lifetime; Magneto-mechano-electric energy harvester; Reliability; Single-crystal macro fiber composite
Subjects: Physics
Materials Engineering > Materials engineering
Divisions: Department of Material Science Engineering
Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 21 Jul 2022 10:51
Last Modified: 21 Jul 2022 10:51
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