Document RpNo18Ky3jGD0vGYpK0yNoRjv

PFAS Restriction Testing of hydrocarbon membranes Evidence for ECHA PFAS RESTRICTION Hydrocarbon Membranes are NOT alternatives The H2 level in the O2 rapidly rose and resulted in cell failure around the 10hr mark. This is typical of hydrocarbon membrane technology that exists today Electrolysers need to run at least 5000-8000 hrs a year to be economically viable No hydrocarbon membranes are close to being stable enough, especially at elevated hydrogen generation pressures. Claimed durability data is typically at atmospheric pressure NB. Voltages are similar to baseline PEM and translate to 49.2 - 51.8 kWh/kg H2. Given the state of the art today, widespread deployment of hydrocarbon membranes suitable for electrolysis at scale is at least 10 years out, probably closer to 15-20 unless a major breakthrough is made imminently 2 Nel internal testing, September 2021 STRICTLY PRIVATE AND CONFIDENTIAL - 2021 Nel - All rights reserved  . . . . . . . . . . . . . . . . . numbe.r one b.y natur.e . . . . . . . . . . . . .