Article
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Conductive Polymers and a Method to Determine the Proton Conductivity of Polymer Membrane
Version 1
: Received: 1 September 2023 / Approved: 4 September 2023 / Online: 5 September 2023 (02:57:05 CEST)
How to cite: Öztürk, R. Conductive Polymers and a Method to Determine the Proton Conductivity of Polymer Membrane. Preprints 2023, 2023090201. https://doi.org/10.20944/preprints202309.0201.v1 Öztürk, R. Conductive Polymers and a Method to Determine the Proton Conductivity of Polymer Membrane. Preprints 2023, 2023090201. https://doi.org/10.20944/preprints202309.0201.v1
Abstract
In this research the possibility of using pH change to measure proton conductivity of proton exchange membranes (PEM) or else known as polymer electrolyte membranes are tested with using an experimental setup prepared by using pH meters. PEMs are an important part of the fuel cells and proton conductivity of the PEMs are one of the most important properties of the PEMs. Also, proton conductivity is the one of the biggest limiting factors of fuel cells thus it is important to measure the proton conductivity of the PEMs while trying new polymers or new types of membranes. But as current measurement methods do not have a standard and can be separated into mainly two different measurement methods which are Electron Impedance Spectroscopy (EIS) and Ion Exchange Capacity (IEC). EIS gives clearer results, but it needs an impedance analyzer machine, platinum electrodes and setup so this cannot be possible for every researcher due to its economical aspect. For IEC it is basically a titration method to see acid groups in the polymer or polymer matrix which are directly responsible for proton conductivity so this can show an indirect measurement of proton conductivity. But as for this one drawback are firstly this one is an indirect measurement and secondly needs overnight bath in solution can take long times. So, the possibility of using pH can be easier and both from time and economical aspect if it can be proven the give a direct relationship between pH change and proton conductivity.
Keywords
Proton exchange membrane (PEM); poly(vinyl) alcohol membrane; proton conductivity; proton conductivity measurement; pH measurement; fuel cells
Subject
Engineering, Chemical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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