Membrane conductivity models binary friction model

B. Carnes and N. Djilali, Modelling and Simulation of Conduction of Protons and Liquid Water in a Polymer Electrolyte Membrane Using the Binary Friction Membrane Model, lESVic Report, University of Victoria (2005). 

The model of TMT is one of the few models solely targeted at predieting conductivity behaviour of a membrane, and in contrast to the model of SZG, is based on physical rather than purely empirical considerations [22]. It is in this vein that they invoke the dusty fluid model (DFM) to model transport in the membrane. Before considering the model of TMT we examine the baek-ground of the DFM and the binary friction model (BFM). 

Based on this framework, a Binary Friction Membrane Model (BFM2) was developed to account for coupled transport of water and hydronium ions in polymer electrolyte membranes. The BFM2 was cast in a general form to allow for broad applicability to the PFSA family of membranes. As a tool to determine the model parameters, a simplified Binary Friction Conductivity Model (BFCM) was derived to represent conditions found in AC impedance conductivity measurements. 

While the focus of the model performance assessment was on Nafion 1100 equivalent weight (EW), the binary friction membrane transport model is quite general and should be applicable to other PFSA membranes. This is supported by preliminary results in applying the model to Dow membranes and membrane C, whereby rational changes in a single model parameter based on physical considerations of structural differences from Nafion yield conductivity predictions that are in good agreement with experimental measurements [61]. 

---

See also in sourсe #XX -- [ ]

---