20.500.12556/RUL-139081 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 to conventional energy conversion systems, there are still certain economic, operational, and environmental setbacks. Durability under a wide range of operating conditions presents a challenge because degradation processes affect the PEMFC efficiency. Typically, life cycle assessment (LCA) of PEMFC systems do not include performance degradation. Thus, a novel semi-empirical PEMFC model is developed, which includes degradation effects caused by different operational regimes (dynamic and steady-state). The model is integrated into LCA through life cycle inventory (LCI) to achieve a more realistic and accurate evaluation of environmental impacts. Verification of the model clearly showed that the use of existing LCI models underestimates the environmental impacts. This is especially evident when green hydrogen is used in PEMFC operational phase, where manufacturing phase and maintenance (stack replacements) become more influential. Input parameters of the model can be modified to reflect technological improvements (e.g. platinum loading or durability) and evaluate the effects of future scenarios. fuel cells proton exchange membrane life cycle assessment life cycle inventory model degradation operational regime environmental impacts proton exchange membrane fuel cell gorivne celice protonsko prepustna membrana analiza življenjskega cikla model inventarja življenjskega cikla degradacija obratovalni režim okoljski vplivi true false true Angleški jezik Slovenski jezik Članek v reviji 2022-08-30 09:57:06 2022-08-30 09:57:14 2022-09-22 09:58:31 0000-00-00 00:00:00 2022 0 0 19 str. iss. 57 Vol. 47 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.352.6:502.171 0360-3199 10.1016/j.ijhydene.2022.04.011 105811203 1-s2.0-S0360319922014768-main.pdf 1-s2.0-S0360319922014768-main.pdf 1 42588A30062EEA9294D390F2A1F11FBD 74438250fe01d25cfa24a5134b0f858b1e6f709425eca70e18230508127aa8fe a66c3a69-2839-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159610 https://www.sciencedirect.com/science/article/pii/S0360319922014768 1 537459ea-2839-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159609 Fakulteta za strojništvo 0 0 0