Effective Hydrogen Pressure at the Negative Electrode Affecting the Output of 2-Propanol/acetone/hydrogen Thermally Regenerative Fuel Cell

Abstract

Effective hydrogen pressure at the negative electrode, affecting the output of thermally regenerative fuel cell driven by acetone/hydrogen and acetone/2-propanol redox pairs, has been discussed. Whereas the open circuit voltage of the acetone/hydrogen thermally regenerative fuel cell was almost equal to theoretical one, the magnitude of the other redox type, i.e., acetone/2-propanol, was relatively small but increased at higher temperatures, being well interpreted in terms of effective hydrogen pressure at the negative electrode. With regard to the internal resistance of the cell, however, its dependences on electrode area and reaction temperatures were the same for both types.