from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics The difference between the electric potential of an electrode or cell under the passage of a current and the thermodynamic value of the electrode or cell potential in the absence of electrolysis


from Wiktionary, Creative Commons Attribution/Share-Alike License

over- +‎ potential


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  • When you factor in the abundance of cobalt oxide, the stability of the nanoclusters under use, the modest overpotential and mild pH and temperature conditions, we believe we have a promising catalytic component for developing a viable integrated solar fuel conversion system.

    Green Car Congress 2009

  • Because the hydrogen evolution reaction (HER) on plain carbon electrodes is very slow, a high overpotential is required to drive hydrogen production.

    Green Car Congress 2008

  • To reduce this overpotential, platinum is usually used as a catalyst.

    Green Car Congress 2008


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