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

作者：Come, J.^*; Naguib, M.; Rozier, P.; Barsoum, M. W.; Gogotsi, Y.; Taberna, P. -L.; Morcrette, M.; Simon, P.

来源：Journal of the Electrochemical Society, 2012, 159(8): A1368-A1373.

DOI：10.1149/2.003208jes

• CAVITY MICROELECTRODE
• IONIC LIQUID
• STORAGE
• SUPERCAPACITOR

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.

• 出版日期2012