Electrode potential

<p>In <a href="/facts/Electrochemistry/C0RUWpBH">electrochemistry</a>, electrode potential is the <a href="/facts/Voltage/EN2po6N2">voltage</a> of a <a href="/facts/Galvanic_cell/a4V7CQC8">galvanic cell</a> built from a standard reference <a href="/facts/Electrode/251PaKX8">electrode</a> and another electrode to be characterized. The <a href="/facts/Standard_electrode_potential/YQUhbI6K">standard electrode potential</a> is a conventional instance of this concept whose reference electrode is the <a href="/facts/Standard_hydrogen_electrode/c6mksrr1">standard hydrogen electrode</a> (SHE), defined to have a potential of zero <a href="/facts/Volts/KF18MXP2">volts</a>. It may also be defined as the potential difference between the charged metallic rods and salt solution.
</p><p>The electrode potential has its origin in the potential difference developed at the interface between the electrode and the <a href="/facts/Electrolyte/4YE8bIVa">electrolyte</a>. It is common, for instance, to speak of the electrode potential of the M+/M redox couple.
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Electrode potential open-in-new

Electrode potential