electrode potential


Also found in: Encyclopedia, Wikipedia.
Related to electrode potential: Standard electrode potential

electrode potential

n
(Chemistry) chem the potential difference developed when an electrode of an element is placed in a solution containing ions of that element
References in periodicals archive ?
temperature, electrode potential, PH, dissolved chemical species) which play a role at different length scales.
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.
where the negative sign is for p-type and positive sign for n-type conductivity, N is the charge carrier density, donor density ([N.sub.D]) for n-type or acceptor density ([N.sub.A]) for p-type semiconductors, [C.sub.SC] represents the capacitance of the space charge region, [epsilon] is the relative dielectric constant of [Cu.sub.2]O which equals to 6.3 [17], and V is the applied electrode potential (volts).
The various current versus electrode potential relationships for the anodic and cathodic reactions are assumed to be subject to activation control with logarithmic (Tafel) polarization behavior.
A more cathodic electrode potential (in the hydrogen evolution direction) leads to (i) larger hydrogen oxidation currents and (ii) a shift of hydrogen oxidation towards more positive potentials.
To determine the best current density and electrode potential domain to be applied to favor both the electro-Fenton process (cathodic [H.sub.2][O.sub.2]) and the anodic oxidation (anodic OH), a microelectrolysis study was performed.
PC cointercalation is well known to occur at ~1 V versus [Li.sup.+]/Li, hindering the lowering of the electrode potential to values corresponding to lithium intercalation (0.25-0.0 V versus [Li.sup.+]/Li) and thus inducing graphite exfoliation prior to lithium intercalation during the first charging.
It is seen that the negative electrode potential, [V.sub.l], is significantly lowered to maintain a negative over potential [eta] and thus supports reacting current in anode.
Touch in different parts of the screen is done experimentally and simulated in MATLAB, then for each point of touch, electrode potential is recorded in two modes.
They used cyclic voltammograms, in which working electrode potential is ramped linearly against time, to demonstrate electrochemical properties of hemin.
The electrode potential reported in this work was against the saturated calomel electrode (SCE).