Characterization and Model of Piezoelectrochemical Energy Harvesting Using Lithium ion Batteries
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Author(s)
Arnold, C. B.
Schiffer, Zachary J.
Date Issued
May 2017
Journal
Experimental Mechanics
Publisher
Springer US
Citation
Schiffer, Z. J., and C. B. Arnold. “Characterization and Model of Piezoelectrochemical Energy Harvesting Using Lithium Ion Batteries.” Experimental Mechanics, vol. 58, no. 4, Apr. 2018, pp. 605–11.
Version
Author's final manuscript
Abstract
Although lithium ion battery research often focuses on electrochemical properties, lithium ion intercalation materials are also mechanically active. Essentially, these materials exhibit a mechanical-electrochemical coupling such that when a stress is applied, the voltage of the battery increases. In this work, we develop a model to study and predict the effectiveness of intercalation materials as mechanical energy harvesters. Specifically, we show that a lithium ion battery harvester can be modelled as a simple circuit and that we can make both qualitative and quantitative predictions about the effectiveness of a battery material given its intrinsic mechanical and electrochemical properties. The measured efficiency of our system, calculated from the energy output and total work input, is 0.012 ± 0.004%, and our model predicts that the maximum theoretical efficiency of the system is 2.9 ± 0.5%. In the future, this model will help us develop and study other intercalation materials that will bring the measured efficiency closer to our proposed theoretical maximum. Keywords: Piezoelectrochemisty, Lithium-ion batteries, Mechanical energy harvesting, Mechanical-electrochemical coupling
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s11340-017-0291-1
