title: Unraveling the local energetics of transport in a polymer ion conductor.
abstract: We compare diffusion activation energy measurements in a hydrated perfluorosulfonate ionomer and aqueous solutions of triflic acid. These measurements provide insight into water transport dynamics on sub-nm length scales, and gauge the contribution of the polymer sidechain terminal group. Future membrane materials design will hinge on detailed understanding of transport dynamics.
authors.affiliation: Department of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, VA, USA.
authors.forename: Mark D
authors.initials: MD
authors.lastname: Lingwood
authors.forename: Zhiyang
authors.initials: Z
authors.lastname: Zhang
authors.forename: Bryce E
authors.initials: BE
authors.lastname: Kidd
authors.forename: Kacey B
authors.initials: KB
authors.lastname: McCreary
authors.forename: Jianbo
authors.initials: J
authors.lastname: Hou
authors.forename: Louis A
authors.initials: LA
authors.lastname: Madsen