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 …

Effect of bound state of water on hydronium ion mobility in hydrated Nafion using molecular dynamics simulations

T Mabuchi, T Tokumasu - The Journal of chemical physics, 2014 - pubs.aip.org
We have performed a detailed analysis of the structural properties of the sulfonate groups in
terms of isolated and overlapped solvation shells in the nanostructure of hydrated Nafion …

A molecular dynamics study of a nafion polyelectrolyte membrane and the aqueous phase structure for proton transport

S Cui, J Liu, ME Selvan, DJ Keffer… - The Journal of …, 2007 - ACS Publications
A molecular dynamics simulation study of hydrated Nafion at water contents ranging from 5
to 20 wt% was performed to examine the structure and dynamics of the hydrated …

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 …

Characterization of the solvation and transport of the hydrated proton in the perfluorosulfonic acid membrane nafion

MK Petersen, GA Voth - The Journal of Physical Chemistry B, 2006 - ACS Publications
The solvation and transport properties of the sulfonate− hydronium ion pair have been
studied in hydrated Nafion through molecular dynamics simulation. Explicit proton and …

Atomistic simulation of nafion membrane: I. Effect of hydration on membrane nanostructure

R Devanathan, A Venkatnathan… - The Journal of Physical …, 2007 - ACS Publications
We used classical molecular dynamics simulation with the DREIDING force field to
characterize the changes in the nanostructure of Nafion membrane brought about by …

Excess proton solvation and delocalization in a hydrophilic pocket of the proton conducting polymer membrane Nafion

MK Petersen, F Wang, NP Blake, H Metiu… - The Journal of …, 2005 - ACS Publications
Solvation properties of the hydrated excess proton are studied in a hydrophilic pocket of
Nafion 117 through a series of molecular dynamics simulations. The multistate empirical …

Atomistic simulations of hydrated Nafion and temperature effects on hydronium ion mobility

A Venkatnathan, R Devanathan… - The Journal of Physical …, 2007 - ACS Publications
The effects of hydration level and temperature on the nanostructure of an atomistic model of
a Nafion (DuPont) membrane and the vehicular transport of hydronium ions and water …

Comprehensive picture of water dynamics in Nafion membranes at different levels of hydration

R Hammer, M Schönhoff… - The Journal of Physical …, 2019 - ACS Publications
1H NMR spectroscopy is employed to study the long-range (diffusion) and short-range
(relaxation) motions of water in the hydrophilic channels of Nafion at different stages of …

Orientational dynamics of water in the Nafion polymer electrolyte membrane and its relationship to proton transport

MK Petersen, AJ Hatt, GA Voth - The Journal of Physical Chemistry …, 2008 - ACS Publications
Orientational anisotropies are calculated from molecular dynamics simulations of bulk water
and the Na+ and H+ forms of hydrated Nafion and then compared with corresponding …