Determination of the diffusion coefficient for sulfuric acid in lead-acid batteries; Influence of the diffusion phenomenon on low-rate operation
The diffusion coefficient for sulfuric acid has been experimental determined. The resulting value has been compared with others obtained by applying three different theoretical methods to the existing conditions in a typical lead-acid cell. A noticeable difference between experimental and theoretical values has been found. This difference is attributed to special conditions in lead-acid batteries that improve diffusion and make the coefficient greater.