Green Hydrogen Production Using Proton-Exchange-Membrane Water Electrolysis
プロトン交換膜水電解によるグリーン水素製造 (AI 翻訳)
Jeeva Chacko
🤖 gxceed AI 要約
日本語
本論文はPEM水電解の動作原理と電気化学モデルを詳細に解説し、効率と水素生成速度のトレードオフを定量化。LCOH分析により、低コスト電力と高稼働率でのみ水素が競争力を持つことを示した。
English
This paper reviews PEM water electrolysis, develops an electrochemical model to quantify efficiency vs. production rate, and estimates levelized cost of hydrogen. It finds that hydrogen cost-competitiveness (~$2/kg) requires low-cost electricity at high capacity factor.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は「水素基本戦略」を掲げ、PEM電解の国産化・大規模化を推進中。本論文の効率・コスト分析は、国内の実証プロジェクトやNEDO支援の技術ロードマップに直接的な示唆を与える。
In the global GX context
Globally, green hydrogen is a cornerstone of industrial decarbonization. This paper's LCOH model provides a benchmark for comparing electrolysis technologies and underscores the need for cheap, firm renewable power—a key insight for IPPs and hydrogen project developers.
👥 読者別の含意
🔬研究者:The electrochemical model and LCOH breakdown offer a reproducible framework for optimizing PEM electrolyzer design and operation.
🏢実務担当者:The analysis clarifies cost targets ($2/kg) and operating conditions (current density, capacity factor) needed for commercial viability.
🏛政策担当者:The emphasis on low-cost electricity and high capacity factor highlights the importance of renewable power procurement and grid integration policies.
📄 Abstract（原文）
Green hydrogen produced by water electrolysis powered by renewable electricity is widely regarded as an indispensable energy carrier for decarbonizing sectors that resist direct electrification, including steel, ammonia, refining, and heavy transport. Among the electrolysis technologies, proton-exchange-membrane (PEM) water electrolysis is especially well suited to coupling with intermittent renewables owing to its high current density, compact footprint, rapid dynamic response, and ability to operate at high differential pressure. This paper reviews the operating principles of PEM electrolysis and develops an electrochemical model that resolves the cell voltage into its reversible, activation, ohmic, and concentration components to quantify the trade-off between energy efficiency and hydrogen-production rate. The model is used to compare PEM with alkaline and solid-oxide electrolysis and to estimate the levelized cost of hydrogen (LCOH) as a function of electricity price and capacity factor. At a current density of 2 A/cm-squared the modeled PEM cell operates at a voltage efficiency of about 74 percent, and the LCOH analysis shows that hydrogen approaches the cost-competitiveness target of roughly two US dollars per kilogram only when low-cost electricity is available at a high capacity factor. The study identifies efficiency, durability, and electricity cost as the principal levers for scaling green hydrogen.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.63090/ijtrs/3139.1788.0015first seen 2026-06-12 05:53:25
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