Polymer binder Nafion

Power densities using different cathode catalysts (Pt and CoTMPP) and polymer binders (Nafion and PTFE)... 

Power densities using different cathode catalysts (Pt and CoTMPP) and polymer binders (Nafion and PTFE) in single chamber microbial fuel cells. Environ. Sci. Technol., 40 (1), 364-369. 

Figure 6.31 shows the polarization curves of SPTES-50 polymer and Nafion-117 MEAs, providing a comparison of the relative performances of the two systems. The overall electrochemical performance of the SPTES-50 polymer MEA using conventional electrode inks with perfluorinated binders was superior to that of Nafion-117 MEA under comparable conditions (80°C, 55% relative humidity, 1 atm, stoichiometry = 2 for and air). 

The electrodes in PEM fuel cells contain a certain amount of Nafion polymer solution to act as a binder in the ink and also to introduce some H" conductive substance to the triple-phase boundary [74]. For AAEM fuel cells, there is a need for an analogous ionomer solution for use in the catalyst layer [54] and so it is an important consideration for development of good electrodes for the alkaline fuel cell [64]. 

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