Abstract
A dialytic battery was constructed; three compartments which were well agitated, were made with a cation exchange membrane and an anion, each having an area of 14 cm2, and two Ag·AgCl for the positive electrode and the negative. Discharge characteristics of the battery in which the sodium chloride concentration in the electrode compartments and in the middle compartment were initially 3.5×104mg/liter and 350mg/liter respectively, were in vestigated. The maximum external power obtained has been 22 mW/m2. Better efficiency of energy conversion may be obtailled with exchange membranes having low electric resistance and transport number close to unit. The observed E. M. F. was about a half of the theoretical value of the concentration potential at higher concentration ratio 100:1. Decreasing the ratio, the discrepancy becomes less owing to the lessening of electric resistance in the middle compartment.
