Rate-determining steps in fuel cells with ion exchange membranes
conference paper
It has been shown by impedance measurements that over a large range of potentials the current at the oxygen electrode of hydrogen-oxygen ion exchange membrane fuel cells is controlled by a charge tra11sfer reaction. The frequency range used covered six decades.
The influence of the hydrogen ion concentration on the rate of the electrode processes was studied by replacing part of the hydrogen ions in the membrane by sodium ions. Limiting currents proportional to the hydrogen ion content were observed.
The influence of the hydrogen ion concentration on the rate of the electrode processes was studied by replacing part of the hydrogen ions in the membrane by sodium ions. Limiting currents proportional to the hydrogen ion content were observed.
TNO Identifier
283094
Source title
Comptes rendus 2es journées internationales d'étude des piles à combustible
Collation
7 p.