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A Non-Aqueous Asymmetric Cell with a Ti2C-Based Two-Dimensional Negative Electrode

Abstract : A new MXene phase, Ti2C, obtained by aluminum extraction from Ti2AlC and exfoliation of the reaction product, was electrochemically studied vs. Lithium. Li-ions insertion into the 2-D structure was characterized by in situ XRD measurements. Additional electrochemical kinetic characterizations of Ti2C, using a cavity micro-electrode, showed that the electrochemical reactions involve two different phenomena: one diffusion-limited, the other not. A Ti2C/activated carbon asymmetric cell was assembled to highlight the high rate performance of the MXene. The cell was cycled between 1.0 V and 3.5 V, and showed good capacity retention during 1000 galvanostatic charge/discharge cycles at rates up to 10C.
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Submitted on : Tuesday, February 19, 2019 - 6:19:52 PM
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Jérémy Come, M. Naguib, Patrick Rozier, M. W. Barsoum, Y. Gogotsi, et al.. A Non-Aqueous Asymmetric Cell with a Ti2C-Based Two-Dimensional Negative Electrode. Journal of The Electrochemical Society, Electrochemical Society, 2012, 159 (8), pp.A1368-A1373. ⟨10.1149/2.003208jes⟩. ⟨hal-00821063⟩



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