Bessarabov, DmitriKrüger, AndriesLuopa, Sean M.Park, JiyoungMolnar, Attila A.2017-04-182017-04-182016Bessarabov, D. et al. 2016. Gas crossover mitigation in PEM water electrolysis: hydrogen cross-over benchmark study of 3M's Ir-NSTF based electrolysis catalyst-coated membranes. ECS transactions, 75(14):1165-1173. [http://ecst.ecsdl.org/]http://hdl.handle.net/10394/21435http://dx.doi.org/10.1149/07514.1165ecsthttp://ecst.ecsdl.org/content/75/14/1165.full.pdf+html?sid=83d7f034-5c3a-4709-b6c0-b17901cc9e92In this work we present some preliminary data, such as permeability (gas crossover) of oxygen and hydrogen as a function of current density and other operational variables, aimed at establishing baselines for unmitigated hydrogen crossover of 3M’s electrolyzer MEAs based on 3M’s NSTF low-PGM loading catalyst and several types of perfluoro sulfonic acid based PEM membranes, both of which are widely commercially available (such as Nafion™ membranes), and membranes made by 3M. Experimental challenges associated with ex situ and in situ gas crossover measurements will be also discussedenArticle