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The influence of degradation effects in proton exchange membrane fuel cells on life cycle assessment modelling and environmental impact indicators
ID Stropnik, Rok (Author), ID Mlakar, Nejc (Author), ID Lotrič, Andrej (Author), ID Sekavčnik, Mihael (Author), ID Mori, Mitja (Author)

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Abstract
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.

Language:English
Keywords:fuel cells, proton exchange membrane, life cycle assessment, life cycle inventory model, degradation, operational regime, environmental impacts, proton exchange membrane fuel cell
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Year:2022
Number of pages:19 str.
Numbering:Vol. 47, iss. 57
PID:20.500.12556/RUL-139081 This link opens in a new window
UDC:621.352.6:502.171
ISSN on article:0360-3199
DOI:10.1016/j.ijhydene.2022.04.011 This link opens in a new window
COBISS.SI-ID:105811203 This link opens in a new window
Publication date in RUL:30.08.2022
Views:405
Downloads:97
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Record is a part of a journal

Title:International journal of hydrogen energy
Shortened title:Int. j. hydrogen energy
Publisher:Elsevier, Hydrogen Energy Publications LLC
ISSN:0360-3199
COBISS.SI-ID:3338511 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:gorivne celice, protonsko prepustna membrana, analiza življenjskega cikla, model inventarja življenjskega cikla, degradacija, obratovalni režim, okoljski vplivi

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0401
Name:Energetsko strojništvo

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