Adsorption — volcano curve
Theory of electrocatalysis
Published Online: 15 DEC 2010
Copyright © John Wiley & Sons, Ltd. All rights reserved.
Handbook of Fuel Cells
How to Cite
Trasatti, S. 2010. Adsorption — volcano curve. Handbook of Fuel Cells.
- Published Online: 15 DEC 2010
This chapter gives a theoretical description of electrocatalysis, providing fundamental aspects not related to particular experimental details. The relationship between intermediate adsorption and reaction rate is discussed. This includes the nature of the solid as well as its surface crystallographic orientation. Primary and secondary effects of the electrode material are illustrated in terms of double layer and chemisorption effects. The origin of volcano curves is demonstrated and their relation to the reaction mechanism pointed out. It is shown that no absolute evaluation of electrocatalysis is possible since the conditions at which electrical effects at the interface vanish are not known.
- reaction intermediate;
- volcano curve;
- synergetic effects