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. 2019 Dec 18;5(1):31–40. doi: 10.1021/acsomega.9b03550

Figure 1.

Figure 1

Exchange current density as a function of the hydrogen adsorption energy (ΔGH) of metal–hydrogen bonds for various pure metals. The experimental “volcano plot” indicates that Pt, with the most approachable zero hydrogen absorption energy, has the highest HER catalytic activity. Reprinted from the work of Chorkendorff et al.1 Copyright 2007 American Association for the Advancement of Science.