The influence of degradation effects in proton exchange membrane fuel cells on life cycle assessment modelling and environmental impact indicators

Although proton exchange membrane fuel cell (PEMFC) systems are expected to have lower environmental impacts in the operational phase, compared conventional energy conversion systems, there still certain economic, operational, and setbacks. Durability under a wide range of operating conditions presents challenge because degradation processes affect PEMFC efficiency. Typically, life cycle assessment (LCA) do not include performance degradation. Thus, novel semi-empirical model is developed, which includes effects caused by different regimes (dynamic steady-state). The integrated into LCA through inventory (LCI) achieve more realistic accurate evaluation impacts. Verification clearly showed that use existing LCI models underestimates This especially evident when green hydrogen used where manufacturing phase maintenance (stack replacements) become influential. Input parameters can be modified reflect technological improvements (e.g. platinum loading or durability) evaluate future scenarios. • Semi-empirical was developed using data PEMFC. New Life Cycle Inventory for defined. Operational regime stack replacement newly model. Environmental 1kWel were analysed. Sensitivity analysis reduced improved durability performed.