Advanced flexible supercapacitors: vertical 2D MoS and WS nanowalls on graphenated carbon nanotube cotton.

Flexible supercapacitors (SCs), which are mostly produced from carbon-based materials, are emerging devices for lightweight, portable, miniaturized, and wearable electronic products. However, it is important to improve the energy density, power density and durability of flexible SCs, for which newly developed materials and composites are required. In this study, we developed flexible SCs with enhanced capacitance and stability using the advantages of high volume/surface ratio of vertical two-dimensional MoS and WS structures.