6R-TaS₂ Anchored on Mo Foil as a Robust Electrocatalyst for Hydrogen Evolution.

ABSTRACT: Affordable and durable HER catalysts are critical for sustainable hydrogen production. We report electrochemically exfoliated multilayer TaS₂ flakes, predominantly in the metallic 6R phase, anchored on conductive Mo foil. The optimized hybrid (0.8 mg TaS₂) initiates HER at -0.06 V vs RHE and reaches -10 mA cm^-2 at only -150 mV vs RHE, approaching the performance of 20% Pt/C on Mo. Fast kinetics (Tafel slope of 68 mV dec^-1), low charge-transfer resistance, and a high electrochemically active surface area (∼5.5 cm²) contribute to the superior HER activity, while maintaining ∼58% of the initial current after ∼56 h of continuous operation. Compared to TaS₂ drop-cast on glassy carbon, the Mo substrate boosts performance by facili

SUBMITTER: Kagkoura A 

PROVIDER: S-EPMC12754742 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature