Oxidation-reduction electrode

Japanese: 酸化還元電極 - さんかかんげんでんきょく（英語表記）oxidation‐reduction electrode

An electrode system in which a pair of oxidant Ox and reductant Red present in a solution undergoes an oxidation-reduction reaction Ox + n e ^- ⇄Red (e ^- is electrons, n is the number of electrons involved in the reaction) on the surface of a chemically inactive electrode. The equilibrium electrode potential of this electrode is specifically called the oxidation-reduction potential. ^{Typical examples include systems in which an inert electrode such as platinum or gold is inserted into an aqueous solution containing Fe 2+} ^and Fe 3+, and quinhydrone electrodes. The electrode phase in these systems simply acts as a container that supplies electrons, and the substances in the electrode phase are not directly involved in the electrode reaction.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

溶液中に存在する一対の酸化体Oxと還元体Redとが，化学的に不活性な電極面で酸化還元反応　Ox＋ne^－⇄Red(e^－は電子，nは反応に関与する電子の数)を行うような電極系。この電極の平衡電極電位をとくに酸化還元電位という。Fe^2＋およびFe^3＋を含む水溶液中に白金や金のような不活性電極を挿入した系やキンヒドロン電極などが代表的な例である。これらの系の電極相は，単に電子を供給する容器としての役割を演じているだけで，電極相中の物質が電極反応に直接関与するものではない。

出典　株式会社平凡社世界大百科事典第２版について　情報

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