Standard Article

The electrode–electrolyte interface

Fundamentals and Survey of Systems

Thermodynamics and kinetics of fuel cell reactions

  1. A. Hamnett

Published Online: 15 DEC 2010

DOI: 10.1002/9780470974001.f101002

Handbook of Fuel Cells

Handbook of Fuel Cells

How to Cite

Hamnett, A. 2010. The electrode–electrolyte interface. Handbook of Fuel Cells. .

Author Information

  1. University of Strathclyde, Glasgow, UK

Publication History

  1. Published Online: 15 DEC 2010


This chapter describes the structure of the electrochemical double layer formed between an electronically conducting electrode and an ionically conducting electrolyte. The origin of the potential difference across this double layer is explained, and methods for calculating this potential in simple cases are discussed, beginning with the Goüy–Chapman model and incorporating oriented solvent molecules and specifically adsorbed ions at the electrode surface. Some more recent calculational approaches are reviewed in order to shed light on the normal classical models.


  • double layer;
  • electrode potential;
  • Volta potential;
  • Galvani potential;
  • Goüy–Chapman theory;
  • Helmholtz layer;
  • simulation techniques