Researchers at Nagoya University in Japan, under a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO), have created poly(styrenesulfonic acid)-based PEMs with a high density of sulfonic acid groups. A crucial element in eco-friendly polymer electrolyt
Researchers develop a new ultra-high-density sulfonic acid polymer electrolyte membrane for fuel cells, which can be used for vehicles and combined heat and power systems. Credit: Atsushi Noroin Japan, under a project commissioned by the New Energy and Industrial Technology Development Organization , have created poly-based PEMs with a high density of sulfonic acid groups.
Proton conduction in such membranes typically depends on the proton transport mechanism between protons, sulfonic acid groups, and water molecules. Unfortunately, this leads to undesirable side reactions, such as cleavage of the backbone chains of the polymer. Therefore, to avoid unwanted side reactions during polymer synthesis, commercially available PEMs are usually synthesized to have a low density of sulfonic acid groups.
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