The Transference Number

The performance of rechargeable batteries and other electrochemical systems depends on the rate at which working ion (often a cation) is transported from one electrode to other. cation transference number an important transport parameter that affects this rate. purpose perspective distinguish between approximate rigorous methods used in literature measure number. We emphasize fact dependent reference frame analysis; care must be taken when comparing values obtained different sources account for differences frames. present data well-characterized electrolyte. compare rigorously determined numbers two frames with by method. conclude qualitative discussion relationship salt concentration gradients are current drawn through battery.