Current Volume 9
Sulfosuccinic Acid-Modified Polyvinyl Alcohol Electrolyte Membrane for Direct Methanol Fuel Cells
Abstract
In this study, a proton exchange membrane with excellent methanol barrier properties was prepared by simultaneously performing sulfonation and crosslinking through the esterification reaction of polyvinyl alcohol (PVA) and succinic acid (SSA). A fabricated membrane electrode assembly was then developed for application in a direct methanol fuel cell. The swell ratio experiments revealed that the degree of molecular crosslinking tends to increase with increasing SSA dosage, and the anode and cathode electrode membranes exhibit a certain degree of crosslinking. In the AC impedance experiments, the proton conductivity of the membrane also increases with increasing SSA dosage. Ion exchange capacity increases with increasing SSA dosage. In the methanol permeability experiment, methanol permeability increased with increasing temperature. However, as the SSA dosage increased, the accompanying increase in crosslinking reduced the rate of methanol crossover. The methanol permeability of sulfonated PVA membranes was two orders of magnitude lower than that of Nafion. For the single cell, the steps to fabricate a membrane electrode assembly have been developed, and both increased temperature and methanol concentration contribute to improved current density.
Keywords
Direct Methanol Fuel Cell, Methanol Crossover, Poly (Vinyl Alcohol), Proton Exchange Membrane
Citations
IRE Journals:
Horng-Jer Tai, Zhi-Yuan Yang "Sulfosuccinic Acid-Modified Polyvinyl Alcohol Electrolyte Membrane for Direct Methanol Fuel Cells" Iconic Research And Engineering Journals Volume 9 Issue 12 2026 Page 2147-2152 https://doi.org/10.64388/IREV9I12-1719058
IEEE:
Horng-Jer Tai, Zhi-Yuan Yang
"Sulfosuccinic Acid-Modified Polyvinyl Alcohol Electrolyte Membrane for Direct Methanol Fuel Cells" Iconic Research And Engineering Journals, 9(12) https://doi.org/10.64388/IREV9I12-1719058
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