Removing Fluoride-Terminations from Multilayered VC MXene by Gas Hydrolyzation.

Two-dimensional MXenes have shown great promise for many different applications, but in order to fully utilize their potential, control of their termination groups is essential. Here we demonstrate hydrolyzation with a continuous gas flow as a method to remove F-terminations from multilayered VC particles, in order to prepare nearly F-free and partly bare vanadium carbide MXene. Density functional theory calculations demonstrate that the substitution of F-terminations is thermodynamically feasible and presents partly nonterminated VCO as the dominating hydrolyzation product.

Silica from diatom frustules as anode material for Li-ion batteries.

In spite of its insulating nature, SiO may be utilized as active anode material for Li-ion batteries. Synthetic SiO will typically require sophisticated synthesis and/or activation procedures in order to obtain a satisfactory performance. Here, we report on diatom frustules as active anode material without the need for extensive activation procedures.