Yury Gogotsi

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.

TL;DR: The authors show that nanodiamonds serve as an electrolyte additive to co-deposit with lithium metal and suppress the formation of dendrites, affording a promising route to suppress lithium dendrite growth in lithium metal-based batteries.

TL;DR: In this paper, the authors show how simply changing the solvent of an electrolyte system can drastically influence the pseudocapacitive charge storage of the two-dimensional titanium carbide, Ti3C2 (a representative member of the MXene family).

TL;DR: This new synthesis method greatly widens the range of precursors for MXene synthesis and produces flexible and electrically conductive films, which show higher oxidation resistance than MXene synthesized from Ti3 AlC2.

TL;DR: In this article, the authors acknowledge Kathleen Maleski for designing the mask structure with AutoCAD and Bilen Akuzum for laser cutting of Kapton sheets, and also acknowledge Leah Clark for the schematic design.