Plasma-Chemical Integration of Solution-Derived ATTT with 3D Carbon Nanowalls for Controllable WS2/WO x Hybrid Supercapacitor Electrodes

Description

Jinha Shin, Hyunjae Park, and Soo Ouk Jang built binder-free hybrid power-cell electrodes from tungsten disulfide and tungsten oxide on 3D carbon nanowalls. Their 2026 paper tackles a known weakness of the sulfide: limited current flow, complex making, and the need for binders. The team used a plasma-chemical route, laying ammonia-based tetrathiotungstate solution onto them and treating it with downstream hydrogen remote plasma.

Varying starting-mix amount and microwave power routed the scaffold surface through distinct regimes, from nanowall-rich to tungsten oxide-rich, while preserving the three-dimensional shape. The oxide-rich one delivered the highest areal capacitance, 91.1 millifarads per square centimeter at a slow scan rate, against 4.6 for bare walls, though with higher interfacial and transport resistance. The gain came mainly from diffusion-controlled pseudocapacitive storage, and the authors present the route as a practical plan for high-performance binder-free parts.

Catalog record

Source: https://europepmc.org/articles/PMC13325389