Comparative study of water absorption and retention of nafion and its hybrid polymer electrolytic membranes using terahertz spectroscopy

Nafion membranes are used as proton exchange membranes in fuel cells. Water absorption and retention capacity of Nafion membranes play a key role in determining the electrochemical conversion efficiencies. Here, we use Terahertz spectroscopy to study different Nafion membranes and show that hybrid membranes have higher water absorption/retention capacity.