overpotential

Examples

• All

• The current encounters a voltage barrier or overpotential at the electrode surface.

  Academic text (1998)

• Platinum is the gold standard for electrocatalysis, combining low overpotential with high activity for the chemical reactions in water-splitting.

  Blog text (9)

• This voltage reduction is known as the oxygen overpotential.

  Academic text (2004)

• Activation overpotential is the most interesting from the standpoint of the physics underlying fuel cell operation.

  Academic text (1994)

• With fuel cells, there are three main sources of "overpotential" (the name historically given to the deviation of potential from the theoretical value).

  Academic text (1994)

• Ohmic overpotential increases linearly with current density and is responsible for the wide region of figure 3 (shown in red).

  Academic text (1994)

• Concentration overpotential results from the complex hydrodynamic flow of fuel and oxidant within the fuel cell and from limits to ion diffusion in the electrolyte.

  Academic text (1994)

• This third type of overpotential develops as the electrode reactions become limited by the availability of reactants at the active electrode-electrolyte interfaces.

  Academic text (1994)

• Ohmic overpotential is governed predominantly by ionic conduction within the electrolyte, a process whose basic characteristics are by no means fully understood.

  Academic text (1994)

• The oxygen overpotential affects the efficiency of electrochemical reactions in fuel cells.

Surface Forms

Morphology

Etymology