Hybrid Aquivion® membranes doped by SiO2 and CsxH3-xPW12O40 with improved dimensional stability for proton exchange membrane fuel cellsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 1 октября 2025 г.
Аннотация:Short-side-chain perfluorinated sulfonic acid membranes are promising polymer electrolytes for hydrogen-air fuelcells due to their high concentration of functional –SO3H groups. This study explores hybrid membranes based onlow-equivalent-weight Aquivion® ionomer (EW = 790 g/mol) and inorganic dopants (SiO2 and CsxH3-xPW12O40)to enhance performance. The modified membranes exhibit improved dimensional stability, water uptake andproton conductivity under both high and low humidity conditions. The conductivity of Aquivion + CsxH3-xPW12O40is 4 times higher than that of the Aquivion.The maximum power density of the membrane electrode assembly with Aquivion + CsxH3-xPW12O40 membrane(421 mW/cm2) is 1.5 times higher compared to Aquivion at RH = 50 %. The results reveal the structure-properties-performancerelationship of the hybrid Aquivion membranes and demonstrate the effectiveness of using hybridmembranes based on low-EW Aquivion polymer as an electrolyte in fuel cells operating at low humidity.