electrochemistry

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electrochemistry

 [e-lek″tro-kem´is-tre]
the study of the relationships and transformations between chemical and electrical energy.
References in periodicals archive ?
(2) In alkaline solution, the electrode potential decreases with rising pH, in the same way that is known of the oxygen reduction at an oxygen electrode.
With respect to pH measurements, the determination of the OCP appears to be problematic in many respects, because the electrode potential varies in time and can hardly be reproduced due to hysteresis and aging effects.
Adjustable direct current high voltage power supply units 4 and 5 are used to maintain given values of electrode potentials. Unit 4 is connected to the wire 2, and the one 5 is connected to the plane electrode 3.
The pH of the electrolyte has an effect on reaction kinetics at the individual electrodes, as well as the electrode potential at which oxidation or reduction occurs [25-29].
After stable voltage outputs were achieved, power density curves were obtained by changing the circuit resistor from 10000 [OMEGA] to 50 [OMEGA], and individual electrode potentials were measured versus saturated calomel electrode.
Figure 7(b) showed the curves of individual electrode potentials versus current densities.
In electrochemistry, the Nernst equation is an equation that relates the reduction potential of an electrochemical reaction (half-cell or full cell reaction) to the standard electrode potential, temperature, and activities (often approximated by concentrations) of the chemical species undergoing reduction and oxidation.
Equation (1) can now be expressed in terms of electrode potential by substituting for IG and IG0