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Oxygen and hydrogen permeation properties and water uptake of Nafion 117 membrane and recast film for PEM fuel cell. J Appl Electrochem, 1997, 27(2): 117 [23] Barbir F. PEM electrolysis for production of hydrogen from renewable energy sources. Sol Energy, 2005, 78: 661 [24] Sakai T, Takenaka H, Torikai E. Gas Diffusion in the Dried and Hydrated Nafions. J Electrochem Soc, 1986, 133(1): 88 [25] Chiou J S, Paul D R. Gas permeation in a dry Nafion membrane. Ind Eng Chem Res, 1988, 27(11): 2161 [26] Mohamed H F M, Ito K, Kobayashi Y, et al. Free volume and permeabilities of O2 and H2 in Nafion membranes for polymer electrolyte fuel cells. Polymer, 2008, 49(13-14): 3091 [27] Schalenbach M, Michael A H, Jeff T G, et al. Gas Permeation through Nafion. Part2: Resistor Network Model. J Phys Chem C, 2015, 119(45): 25156 [28] Trinke P, Bensmann B, Reichstein S, et al. Hydrogen Permeation in PEM Electrolyzer Cells Operated at Asymmetric Pressure Conditions. J Electrochem Soc, 2016, 163(11): F3164 [29] Fales J L, Vanderborgh N E, Stroeve P. The influence of channel geometry on ionic transport // Proceedings of the Symposium on Diaphragms, Separators, and Ion-Exchange Membranes, 1986: 13 [30] Sellin R C ,Mozet K ,Ménage A, et al. Measuring electro-osmotic drag coefficients in PFSA membranes without any diffusion assumption. Int J Hydrogen Energ, 2019, 44(45): 24905 [31] Wakita H, Kawabata N, Kani Y. Measurement of water permeation through membranes from extremely high hydraulic pressure to atmospheric pressure. Int J Hydrogen Energ, 2019, 44(59): 31257 [32] Shin H S, Oh B S. Water transport according to temperature and current in PEM water electrolyzer. Int J Hydrogen Energ, 2019, 45(1): 56 [33] Trinke P, Bensmann B, Hanke-Rauschenbach R. Current density effect on hydrogen permeation in PEM water electrolyzers. Int J Hydrogen Energ, 2017, 42(21): 14355 [34] Schalenbach M. Erratum: pressurized PEM water electrolysis: efficiency and gas crossover. Int J Hydrogen Energ, 2013, 38(35): 14921. Int J Hydrogen Energ, 2016, 41(1): 729 [35] Grigoriev S A, Millet P, Korobtsev S V, et al. Hydrogen safety aspects related to highpressure polymer electrolyte membrane water electrolysis. Int J Hydrogen Energ, 2009, 34(14): 5986 [36] Ito H, Miyazaki N, Ishida M, et al. Cross-permeation and consumption of hydrogen during proton exchange membrane electrolysis. Int J Hydrogen Energ, 2016, 41(45): 20439 [37] Han B, Mo J K, Kang Z Y, et al. Effects of membrane electrode assembly properties on two-phase transport and performance in proton exchange membrane electrolyzer cells. Electrochimi Acta, 2016, 188: 317 [38] Bromberger K, Ghinaiya J, Lickert T, et al. Hydraulic ex situ through-plane characterization of porous transport layers 录用稿件，非最终出版稿