Anode (source code)
= Anode
{wiki}
The <anode> is the <electrode> at which the net <electrode> <chemical reaction> is <oxidation>: the reacting <chemical species> loses <Electrons>. This definition is independent of terminal sign. See https://goldbook.iupac.org/terms/view/A00370[IUPAC Gold Book: anode].
During <Daniell cell> discharge, a <zinc> <chemical atom> becomes a $\mathrm{Zn}^{2+}$ <cation>, leaving two <Electrons> in the <electrode>; those <Electrons> leave through the external <electrical circuit>. The <zinc> <anode> is the negative terminal. In an externally driven <electrolytic cell>, <Electrons> instead leave the <anode> through the lead to the source's positive terminal. <Conventional current> in that lead points toward the <anode>, opposite to <Electron> motion. The <anode> can therefore be positive while still being the site of <oxidation>. See <Daniell cell> for the balanced <half-reaction> and <electrode> for the operating-mode sign conventions.
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