Effect of elevated temperatures on the states of water and their correlation with the proton conductivity of Nafion

MA Barique, E Tsuchida, A Ohira, K Tashiro - ACS omega, 2018 - ACS Publications
For the first time, we report the effects of elevated temperatures, from 80 to 100° C, on the
changes in the states of water and ion–water channels and their correlation with the proton …

Proton solvation and transport in hydrated nafion

S Feng, GA Voth - The Journal of Physical Chemistry B, 2011 - ACS Publications
Proton solvation properties and transport mechanisms have been studied in hydrated Nafion
using the self-consistent multistate empirical valence bond (SCI-MS-EVB) method that …

Does thermal treatment merely make a H 2 O-saturated Nafion membrane lose its absorbed water at high temperature?

K Feng, L Hou, B Tang, P Wu - Physical Chemistry Chemical Physics, 2015 - pubs.rsc.org
Investigating the dehydration process of a Nafion membrane helps to understand the
mechanism of the decrease in its proton conductivity under high-temperature and low …

Effect of monomeric sequence on nanostructure and water dynamics in Nafion 117

SS Jang, V Molinero, T Cagin, WA Goddard III - Solid State Ionics, 2004 - Elsevier
We studied the effect of polar/nonpolar sequences on the structure and water transport of
Nafion 117 with 20 wt.% water by molecular dynamics (MD) simulations. Although the …

Initial driving force for proton transfer in Nafion

M Tsuda, NB Arboleda Jr, H Kasai - Chemical physics, 2006 - Elsevier
We explore the initial driving force for proton transfer in Nafion using ab initio density
functional calculations. We confirm that the direct and indirect proton transfer mechanisms …

Role of water states on water uptake and proton transport in Nafion using molecular simulations and bimodal network

GS Hwang, M Kaviany, JT Gostick, B Kientiz, AZ Weber… - Polymer, 2011 - Elsevier
Using molecular simulations and a bimodal-domain network, the role of water state on
Nafion water uptake and water and proton transport is investigated. Although the smaller …

Molecular dynamics study of structure and transport of water and hydronium ions at the membrane/vapor interface of Nafion

ME Selvan, J Liu, DJ Keffer, S Cui… - The Journal of …, 2008 - ACS Publications
Through the use of molecular dynamics simulation, we examine the structural and transport
properties of water and hydronium ions at the interface of a Nafion polymer electrolyte …

Investigation of the effects of electric fields on the nanostructure of Nafion and its proton conductivity

S Ryu, JH Kim, JY Lee, SH Moon - Journal of Materials Chemistry A, 2018 - pubs.rsc.org
Nafion, the most popular cation exchange membrane, was cast while charged in an electric
field to enhance the proton conductivity of the membrane. This electrically modified Nafion …

Nature of water transport and electro-osmosis in nafion: insights from first-principles molecular dynamics simulations under an electric field

YK Choe, E Tsuchida, T Ikeshoji… - The Journal of …, 2008 - ACS Publications
The effects of water content on water transport and electro-osmosis in a representative
polymer electrolyte membrane, Nafion, are investigated in detail by means of first-principles …

Molecular modeling of structure and dynamics of Nafion protonation states

S Sengupta, AV Lyulin - The Journal of Physical Chemistry B, 2019 - ACS Publications
We present the results of the atomistic molecular dynamics modeling of different protonation
states of Nafion at varying hydration levels. Previous experiments have shown that the …