The mechamsm of the hydrogen evolution reactlon (HER) on an Au electrode m 0 5-2 x 10m5 M NaOH and KOH solutions was mvestlgated by observmg the Tafel relatIonshIp, dlfferentlal pseudo-capacitance and time constant of the electron transfer reactlon The HER kmetlcs follows the slow discharge mechamsm
The hydrogen evolution reaction on bismuth metal in alkaline solution
โ Scribed by D.E. Williams; G.A. Wright
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 97 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0013-4686
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๐ SIMILAR VOLUMES
A study of the hydrogen-evolution reaction on gold eIectrodes is reported. Two mechanisms are shown to operate between O-0 and O-3 V(he). At low cds d log i/dq = 23RT/2F, x 2\*3RT/I;at higher cds. it changes to 2 This indicates a transition from a Tafel to a Heyrovsky rate-determining step. In 1.0 M
Nickel was modtfied at the surface from alkalme solution contamrng dtfferent concentrattons of WO,% or MoG4= It was shown that improvement in the overpotential (n) and in the exchange current density of the hydrogen evolution reaction m KOH 3M on the electrode depends on the nature of the heteropoly