Cathodic H_2 Evolution from Molten HF,H_2O and H_O~+ Solvates,and the Nature of the Catalytic Surface for H_2 Formation

摘要

The cathodic H_2 evolution reaction (the HER) has been studied primarily from aqueous solutions though significant works have reported results on the kinetics of the HER from alcoholic [1] and some other [2] solvents with the purpose of examining proton solvation effects in the initial discharge step [1,2] and the role of proton-tunneling [3] in that step.On the other hand,rather little work has been done on studies of the HER from proton sources at low activity,e.g.in KF-2HF and its aqueous analogue,K or NaOHcentre dot2H_2O.In the former case the anion is FHF with solvation of K~+ and the F~- anion by the second HF molecule.