MXene//MnO2 Asymmetric Supercapacitors with High Voltages and High Energy Densities

Abstract Invited for this month's cover picture is the work of Prof. Rosen's and Prof. Barsoum's groups at Linköping and Drexel Universities. The cover picture shows two typical cross‐sectional images of TMA + ‐MnO 2 and Mo 1.33 CT z free‐standing films, with highly stacked flakes, exhibiting excellent flexibility and high volumetric capacitances. Micrographs taken by Dr. W. Zeng and colorized and aesthetically enhanced by Patricia Lyons of Moorestown, NJ. Read the full text of the Research Article at 10.1002/batt.202200151 .