Decomposition voltage - Decomposition voltage

When an electrolyte solution or molten salt is electrolyzed using chemically stable electrodes such as platinum, the current is extremely small (residual current) in the low voltage range, and increases exponentially above a certain voltage E _D. This voltage E _D is called the decomposition voltage. The value of E _D does not have much theoretical significance, but it does have practical significance as the minimum voltage at which a significant amount of electrolysis begins to occur. The decomposition voltage is greater than the theoretical decomposition voltage.

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

電解質溶液または溶融塩を白金のような化学的に安定な電極を用いて電解すると，電流は，電圧の小さい領域ではきわめて小さく(残余電流)，ある電圧 E_D 以上で指数関数的に上昇する．この電圧 E_D を分解電圧という．この E_D の値は，理論的な意味はあまりないが，相当量の電解が起こりはじめる最小電圧であるという実用的な意味がある．分解電圧は理論分解電圧より大きい．

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