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- W3163584604 endingPage "106053" @default.
- W3163584604 startingPage "106053" @default.
- W3163584604 abstract "Strain modulation can endow electrochemical materials with promising mechano-electrochemical coupling owing to its adjustable characteristics, which will unlock great potential for realizing high-performance energy storage. MXenes offer outstanding lithium storage performances due to their exceptional conductivity, excellent mechanical properties, and large interlayer spaces for ion intercalation, however an undesirable issue of sluggish kinetics caused by the restacking of MXene nanosheets in electrodes is not well addressed. Here, we demonstrate an extremely effective strategy to resolve this issue by creating strain in Ti3C2Tx MXene via mechanochemistry (MC) method to maximize ion-transfer kinetics for lithium-ion batteries (LIBs). Strain states in Ti3C2Tx MXene, namely out-of-plane tension and corresponding in-plane biaxial compression, are comprehensively assessed through X-ray diffraction, Raman spectroscopy, and extended X-ray absorption fine structure spectroscopy. Diverse experimental characterizations and density functional theory calculations both reveal that the mechanochemistry-induced strained Ti3C2Tx (MC-Ti3C2Tx) MXene exhibits significantly decreased lithium diffusion barrier, which correlates directly to the observed fast ion-transfer kinetics. As expected, MC-Ti3C2Tx electrode delivers a high discharge capacity (380.5 mAh g−1 at 0.1 A g−1) and superior rate capability, outperforming most of previously reported Ti3C2Tx. More importantly, with the remarkably enhanced ion-transfer kinetics, MC-Ti3C2Tx electrode exhibits outstanding lithium storage performances spanning a wide temperature range (40 °C to − 20 °C). This work paves a novel way of strain engineering of MXenes for effectively enhancing diffusion kinetics in LIBs." @default.
- W3163584604 created "2021-05-24" @default.
- W3163584604 creator A5006822602 @default.
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- W3163584604 creator A5025144939 @default.
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- W3163584604 date "2021-09-01" @default.
- W3163584604 modified "2023-09-27" @default.
- W3163584604 title "Mechanochemistry-induced biaxial compressive strain engineering in MXenes for boosting lithium storage kinetics" @default.
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- W3163584604 doi "https://doi.org/10.1016/j.nanoen.2021.106053" @default.
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