Transport Properties of Nafion Membranes in Electrochemically Regenerative Hydrogen/Halogen Cells

1979 ◽  
Vol 126 (10) ◽  
pp. 1682-1687 ◽  
Author(s):  
R. S. Yeo ◽  
J. McBreen
Keyword(s):  
Transport Properties ◽  
Nafion Membranes

Transport Properties of Zeolite Na-X-Nafion Membranes: Effect of Zeolite Loadings and Particle Size

Fuel Cells ◽  
2011 ◽  
Vol 11 (6) ◽  
pp. 801-813 ◽  
Author(s):  
M. Lavorgna ◽  
L. Sansone ◽  
G. Scherillo ◽  
R. Gu ◽  
A. P. Baker
Keyword(s):  
Particle Size ◽  
Transport Properties ◽  
Nafion Membranes

Transport properties of modified Nafion membranes: Effect of zeolite and precursors

2010 ◽  
Vol 180 (40) ◽  
pp. 1694-1701 ◽  
Author(s):  
Ivan M. Krivobokov ◽  
Evgeniy N. Gribov ◽  
Alexey G. Okunev ◽  
Giuseppe Spoto ◽  
Valentin N. Parmon
Keyword(s):  
Transport Properties ◽  
Nafion Membranes

scholarly journals Structural, Thermal, and Gas-Transport Properties of Fe3+ Ion-Exchanged Nafion Membranes

ACS Omega ◽  
2018 ◽  
Vol 3 (7) ◽  
pp. 7474-7482 ◽  
Author(s):  
Mohsin Mukaddam ◽  
Yingge Wang ◽  
Ingo Pinnau
Keyword(s):  
Transport Properties ◽  
Gas Transport ◽  
Gas Transport Properties ◽  
Nafion Membranes

A Molecular Dynamics Study of Transport Properties in Degraded Nafion Membranes

2016 ◽  
Vol 75 (14) ◽  
pp. 651-657
Author(s):  
S. Kono ◽  
T. Mabuchi ◽  
T. Tokumasu
Keyword(s):  
Molecular Dynamics ◽  
Transport Properties ◽  
Nafion Membranes

Transport Properties in Ionic Media

2000 ◽  
Vol 651 ◽  
Author(s):  
A.-L. Rollet ◽  
M. Jardat ◽  
J.-F. Dufrêche ◽  
P. Turq ◽  
D. Canet
Keyword(s):  
Elastic Scattering ◽  
Experimental Evidence ◽  
Transport Properties ◽  
Diffusion Coefficients ◽  
Electrical Transport ◽  
Brownian Dynamics ◽  
Diffusion Processes ◽  
Dynamical Processes ◽  
Self Diffusion ◽  
Nafion Membranes

AbstractTransportcoe[ ]cients in charged media exhibit strong variations, according to the conditions of displacement of the particles. Electrical transport, characterized by the simultaneous displacement of positive and negative charges in opposite directions obeys Ohm's law, but its variation with concentration (non-ideality), depends on several types of interactions, whose time of establishment varies from picosecond to nanosecond. Several diffusion processes can occur: mutual diffusion, where ions move simultaneously in the same direction, keeping local elec- troneutrality, and self diffusion where individual ionic particles move separately. The variation of diffusion coefficients with concentration dependson non-ideality factors analogous to those occuring in conductance, and their experimental evidence is facilitated b y the availability of experimental tec hniquesowing different characteristic times of observation. This phenomenon is particularly noticeable for self-diffsuion coefficients, where the dynamical processes can be observed from the picosecond range (neutron quasi-elastic scattering), to millisecond (NMR) and to hour scale (radiactive tracers). The results are especially enhanced for porous charged media like ion exchanging membranes (nafions).Those results are be explained here theoretically in the framework of contin uous solv en t model theories (brownian dynamics) and experimentally in the study of self-diffusion in nafion membranes.

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