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Abstract
Molybdenum carbide (Mo2C) has attracted considerable research interest as one of the most efficient non-noble electrocatalysts for the hydrogen evolution reaction (HER). Supporting nanosized Mo2C on a conductive carbon matrix with high porosity and large surface area represents an efficient strategy to enhance its HER performance. Herein, we constructed a Mo2C based HER catalyst consisting of ultra-small Mo2C nanocrystals anchored on honeycomb-structured N-doped carbon spheres (Mo2C-HNCS). The as-prepared Mo2C-HNCS manifests a high HER catalytic activity in alkaline media with an overpotential of 128 mV at 10 mA cm-2, a Tafel slope of 60 mV decade-1, and good stability.
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