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overpotential ELETTR

overpotential

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Another is overpotential, the difference between the theoretical and actual electrode voltages needed to drive the reaction at the desired rate. en.wikipedia.org

This can cause a concentration overpotential at both electrodes. en.wikipedia.org

This activation energy is often related to an overpotential of a competing reaction. en.wikipedia.org

Platinum can be used as a catalyst to reduce the overpotential required for hydrogen production. en.wikipedia.org

The activity of ions at the electrode surface changes when there is current flow, and there are additional overpotential and resistive loss terms which contribute to the measured potential. en.wikipedia.org

The additional voltage is referred to as overpotential and is especially high in electrolysis reactions that involve gases, such as oxygen, hydrogen or chlorine. en.wikipedia.org

In a galvanic cell overpotential means less energy is recovered than thermodynamics predicts. en.wikipedia.org

The simpler two-electron reaction to produce hydrogen at the cathode can be electrocatalyzed with almost no overpotential by platinum, or in theory a hydrogenase enzyme. en.wikipedia.org

Systems always suffer from an overpotential that arise from activation barriers, concentration effects and voltage drops due to resistance. en.wikipedia.org

The exchange current density is the current in the absence of net electrolysis and at zero overpotential. en.wikipedia.org

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