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. 2023 Apr 26;9(17):eadh1386. doi: 10.1126/sciadv.adh1386

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Fig. 5. — Polarization curves of PFSA membranes at (A) 100°C and 25% RH and (B) 110°C and 25% RH under H₂/air. (C) OCV test at 90°C and 30% RH and (D) hydrogen crossover at 75°C and 100% RH. SLPM, standard liters per minute.