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Lithiating magneto-ionics in a rechargeable battery
Hu, Yong Gong, Weiyi Wei, Sichen Khuje, Saurabh Huang, Yulong Li, Zheng Li, Yuguang C. Yao, Fei Yan, Qimin Ren, Shenqiang
Hu, Yong
Gong, Weiyi
Wei, Sichen
Khuje, Saurabh
Huang, Yulong
Li, Zheng
Li, Yuguang C.
Yao, Fei
Yan, Qimin
Ren, Shenqiang
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Journal article
Date
2022-06-13
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Physics
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http://dx.doi.org/10.1073/pnas.2122866119
Abstract
Magneto-ionics, real-time ionic control of magnetism in solid-state materials, promise ultralow-power memory, computing, and ultralow-field sensor technologies. The real-time ion intercalation is also the key state-of-charge feature in rechargeable batteries. Here, we report that the reversible lithiation/delithiation in molecular magneto-ionic material, the cathode in a rechargeable lithium-ion battery, accurately monitors its real-time state of charge through a dynamic tunability of magnetic ordering. The electrochemical and magnetic studies confirm that the structural vacancy and hydrogen-bonding networks enable reversible lithiation and delithiation in the magnetic cathode. Coupling with microwave-excited spin wave at a low frequency (0.35 GHz) and a magnetic field of 100 Oe, we reveal a fast and reliable built-in magneto-ionic sensor monitoring state of charge in rechargeable batteries. The findings shown herein promise an integration of molecular magneto-ionic cathode and rechargeable batteries for real-time monitoring of state of charge.
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National Academy of Sciences
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Proceedings of the National Academy of Sciences (PNAS), Vol. 119, No. 25
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