The effect of mechanical stress on the potential of the Ag/Ag+ electrode

Reply to the ‘Comment on “Response of the potential of a gold electrode to elastic strain”’ by Á. Horváth, G. Nagy and R. Schiller, Phys. Chem. Chem. Phys., 2010, 12, DOI: 10.1039/b925108d

“…In their comment 1 (referred to as III for consistency with the notation there), Horva´th et al conclude that the results for the response of potential (E) to strain (e) in our paper 2 (I) are complementary to their earlier work 3 (II). We agree in as much as the two electrode materials are different, Au in I and Ag in II, and in as much as-at least nominally-the experiment in I used a polarisable electrode (PE) whereas that in II used a nonpolarisable electrode (NPE).…”

Dynamic electro-chemo-mechanical analysis during cyclic voltammetry

“…The strain response of electrode potential or work function has long been of interest for problems as diverse as corrosion in structural materials under load 4,5 and the coupling of electronic properties to stress in semiconductor devices. [6][7][8] More recently, the suggestion 9 that a metal's catalytic activity should couple significantly to strain has prompted a renewed interest in the issue.…”

“…Reported numbersincluding recent experiments-for the related quantity dE/ds (where s is a measure for tangential stress in the bulk, which scales with e) differ by several orders of magnitude and even by sign. 1,5,14,[21][22][23] Until recently, the only confirmed quantitative experimental information on B came from measurements of df/dq. Experiments using cantilever bending or porous metal expansion measurements yield B f near the potential of zero charge (pzc) between À1 V and À2.5 V for various metal surfaces in weakly adsorbing electrolytes, 12,[15][16][17][18] in agreement with ab initio work on B E .…”

Experimental methods for the determination of stress changes at electrified solid-liquid interfaces

“…In [73] the effect of mechanical stress on electrode potential E was studied under zero current conditions. The experimental setup was very similar to the extensometer described above.…”

“…The numerically large response reported in [73] has been questioned in [74]. It has been pointed out, that the dE/d values (where  is a measure for tangential stress, which scales with the elastic strain ) reported in the literature [75,76] differ by several orders of magnitude and even by sign.…”