Definition of Overpotential. Meaning of Overpotential. Synonyms of Overpotential

- In electrochemistry, overpotential is the potential difference (voltage) between a half-reaction's thermodynamically determined reduction potential and...
- transfer coefficient, dimensionless η {\displaystyle \eta } : activation overpotential (defined as η = E − E e q {\displaystyle \eta =E-E_{\rm {eq}}} ). The...
- needed] Electrolysis of pure water requires excess energy in the form of overpotential to overcome various activation barriers. Without the excess energy,...
- electrochemical kinetics relating the rate of an electrochemical reaction to the overpotential. The Tafel equation was first deduced experimentally and was later shown...
- water than predicted, and these are termed overpotentials. Experimentally it is known that overpotentials depend on the design of the cell and the nature...
- limitation, the relationship between the current density and the electrode overpotential is given by the Butler–Volmer equation: j t = j 0 ( exp ⁡ ( α o f η...
- electrolytic process to overpotential. The exchange current density is the current in the absence of net electrolysis and at zero overpotential. The exchange current...
- reduction reaction (negative overpotential) and a positive current density for an oxidation reaction (positive overpotential). The sign of the current density...
- the term is used in this sense, it is equivalent to “concentration overpotential”. the changes in concentration (emergence of concentration gradients...
- charge carriers and subsequent fast recombination, requiring a large overpotential to drive the reaction. Research has been focused on improving the water...