Comparative life cycle analysis of electrolyzer technologies for hydrogen production: Manufacturing and operations

IF 38.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Joule Pub Date : 2024-10-15 DOI:10.1016/j.joule.2024.09.007

Xinyi Wei, Shivom Sharma, Arthur Waeber, Du Wen, Suhas Nuggehalli Sampathkumar, Manuele Margni, François Maréchal, Jan Van herle

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Abstract

This study conducts a comprehensive life cycle assessment (LCA) of four electrolyzer technologies: alkaline electrolyzer (AEL), proton-exchange membrane (PEM), anion-exchange membrane (AEM), and solid oxide electrolyzer (SOE). It evaluates their environmental impacts across four main categories: climate change (CC), human health (HH), ecosystem quality (EQ), and abiotic stock resources (ASRs). In order to highlight the critical raw materials (CRMs) used in their manufacturing processes, the research identifies potential material replacements and reveals distinct environmental impacts associated with material choices, such as steel in AEL and AEM, platinum in PEM, and nickel in both SOE and AEL. Additionally, we examine the integration of diverse electrolyzer technologies under various scenarios of renewable electricity sources. Together with a sensitivity analysis of regional electricity mixes and the degradation of stacks across different years, the study provides insights into significant opportunities for performance enhancements in emerging electrolyzer technologies.

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制氢电解槽技术的生命周期比较分析：制造和运营

本研究对碱性电解槽 (AEL)、质子交换膜 (PEM)、阴离子交换膜 (AEM) 和固体氧化物电解槽 (SOE) 这四种电解槽技术进行了全面的生命周期评估 (LCA)。该研究评估了它们对环境的影响，主要包括四个方面：气候变化（CC）、人类健康（HH）、生态系统质量（EQ）和非生物存量资源（ASRs）。为了突出其制造过程中使用的关键原材料 (CRM)，研究确定了潜在的材料替代品，并揭示了与材料选择相关的独特环境影响，如 AEL 和 AEM 中的钢材、PEM 中的铂金以及 SOE 和 AEL 中的镍。此外，我们还研究了各种可再生能源情况下不同电解槽技术的整合。结合对地区电力组合和不同年份电堆退化的敏感性分析，该研究为新兴电解槽技术的性能提升提供了重要机遇。

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来源期刊

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.