Hydrogen evolution: Not living on the edge

Transition-metal dichalcogenides are appealing catalysts for H2 generation from water. They tend to rely on scarce edge sites, rather than the more abundant basal-plane sites, to drive catalysis. Now, guided by computation, H-TaS2 and H-NbS2 are proposed as highly basal-plane-active catalysts that improve with electrochemical cycling.

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Figure 1: MX2 surface activity and its electronic origin.

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Correspondence to Yiying Wu.

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Chirdon, D., Wu, Y. Hydrogen evolution: Not living on the edge. Nat Energy 2, 17132 (2017). https://doi.org/10.1038/nenergy.2017.132

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