Three-Dimensional Vanadium and Nitrogen Dual-Doped TiC Film with Ultra-High Specific Capacitance and High Volumetric Energy Density for Zinc-Ion Hybrid Capacitors.

Zinc-ion hybrid capacitors (ZICs) can achieve high energy and power density, ultralong cycle life, and a wide operating voltage window, and they are widely used in wearable devices, portable electronics devices, and other energy storage fields. The design of advanced ZICs with high specific capacity and energy density remains a challenge. In this work, a novel kind of V, N dual-doped TiC film with a three-dimensional (3D) porous structure (3D V-, N-TiC) based on Zn-ion pre-intercalation can be fabricated via a simple synthetic process.

Thioacetamide-induced CeOS nanostructures with tunable morphology for supercapacitors in wide pH range.

Here, Rare-earth metal oxysulfide CeOS nanostructures with tunable morphology are successfully grown on carbon cloth (CC) for supercapacitors (SCs) via a facile hydrothermal process followed by pyrolysis treatment for the first time. The feeding amount of sulfur source thioacetamide (TAA) plays an important role in the formation of CeOS nanostructures with tunable morphology. Adjusting TAA feeding amount from 0.