Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9759286 | International Journal of Hydrogen Energy | 2005 | 10 Pages |
Abstract
The phase-shift method, i.e., a linear relationship between the behavior (-Ï vs. E) of the phase shift (0â⩽-Ï⩽90â) for the optimum intermediate frequency and that (θ vs. E) of the fractional surface coverage (1⩾θ⩾0) of under-potentially deposited hydrogen and over-potentially deposited hydrogen for the cathodic H2 evolution reaction at noble and transition-metal/aqueous electrolyte interfaces, has been suggested and confirmed using cyclic voltammetric, linear sweep voltammetric or differential pulse voltammetric, and electrochemical impedance spectroscopic techniques. The comment on the phase-shift method by Lasia is discussed. The lack of a single equation for Ï vs. θ as a function of potential (E) and frequency (f) and the unsuitable values of the electrode kinetic parameters (k,θ,β,η) and the equivalent circuit elements given in the comment result in a confused conclusion on the phase-shift method. The conclusion in the comment on the phase-shift method is unacceptable.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Jang H. Chun, Sang K. Jeon, Nam Y. Kim, Jin Y. Chun,