title: Membrane potential across anion-exchange membranes in acidic solution system.
abstract: The membrane potential across anion-exchange membranes in H2SO4 and Na2SO4 solutions was measured, and the experimental results were fitted to the theory in the 2-1 electrolyte system based on the Donnan equilibrium and the Nernst-Planck flux equations. For the Na2SO4 solution, the Donnan potential makes a significant contribution to the membrane potential, but for the H2SO4 solution, the diffusion potential significantly contributes to the membrane potential. The diffusion potential has a greater contribution to the membrane potential across AEM-2 with a high water content than that across AEM-1. These results suggest that a proton with a high mobility can move without substantial influence of electrostatic interaction in a positively charged membrane.
authors.affiliation: Department of Organic and Polymeric Materials, and International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2-12-1-S8-27 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
authors.forename: Naomichi
authors.initials: N
authors.lastname: Kimura
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Matsumoto
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Konosu
authors.forename: Ryotaro
authors.initials: R
authors.lastname: Yamamoto
authors.forename: Mie
authors.initials: M
authors.lastname: Minagawa
authors.forename: Akihiko
authors.initials: A
authors.lastname: Tanioka