Novel self-supported porous MoS2/WC ceramic electrode for efficient hydrogen evolution reaction

The development of electrodes with low cost, high stability and efficient catalytic performance is crucial for the practical application of hydrogen production by electrolyzing water. Here, we reported the preparation of a novel MoS 2 /WC ceramic electrode with a straight-through hole structure by phase-inversion tape-casting combined with hydrothermal method. The obtained MoS 2 /WC electrode achieved impressive HER performance under acidic conditions, specifically with an overpotential of only 215 mV at a current density of 500 mA cm⁻ 2 , demonstrating excellent high current density catalytic activity. Furthermore, the ceramic electrode demonstrated excellent long-term stability, operating reliably for 600 h across a current density range of 10–500 mA cm⁻ 2 . The outstanding catalytic activity and stability at high current densities are primarily attributed to the through-hole structure, which enhances mass transfer of the electrolyte and gas bubbles, along with the increased number of active sites provided by MoS 2 nanoflakes. Therefore, the prepared ceramic electrode has great potential for the development of industrial hydrogen production electrodes.