44
2 Methods for Investigating Electro-Chemo-Mechanical …
Fig. 2.4 a Cyclic voltammogram and b the corresponding piezoelectric signal curve (|A| vs. E and
ϕ vs. E) for a polycrystalline Au foil electrode in 0.5 M H 2 SO 4 solution [10]. Reproduced from
[10] with permission from The Electrochemical Society
keeps constant in the vicinity of E pzc , K can be calibrated from the coupled a and b
curves in Fig. 2.6.
The following relationships hold from the Gokhshtein equation (see Eq (1.121)
in Sect. 1.8 of Chap. 1):
−
∂g 1
∂E
= q 1 +
∂q 1
∂ε
,
(2.3)
and