Can Intermediate Temperatures be a "Goldilocks Zone" for Green Hydrogen Production?
中間温度はグリーン水素製造の「ゴルディロックスゾーン」となり得るか？ (AI 翻訳)
Subhajit Bhattacharjee, Kuldeep Mamtani, Harshal Chaudhari, Henner Heyen, Sridevi Govindarajan, S. Ghadage, S. Sadasivan
🤖 gxceed AI 要約
日本語
本論文は、中間温度水電解（ITWE：100〜400℃）がグリーン水素製造の最適解となる可能性を探る展望論文である。低温（アルカリ、PEM）と高温（SOEC）の間で効率と耐久性のバランスを取るITWEに焦点を当て、熱電気化学、工学的課題、技術商業上のトレードオフを批判的に分析し、大規模展開に向けた将来の研究方向を提案する。
English
This perspective paper explores intermediate-temperature water electrolysis (ITWE, 100-400°C) as a potential optimal solution for green hydrogen production. It critically examines the thermo/electrochemistry, scientific and engineering challenges, techno-commercial trade-offs of ITWE, which balances efficiency and durability between low-temperature (alkaline, PEM) and high-temperature (SOEC) systems, and proposes future research directions for large-scale deployment.
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のもとグリーン水素の大量導入を目指しており、本論文が提示するITWEの技術的優位性は、国内の水素製造コスト低減や実用化促進に示唆を与える。特に、現行のアルカリ水電解やPEMの課題を克服する可能性がある点で、日本の研究開発や実証プロジェクトに関連する。
In the global GX context
Globally, green hydrogen is critical for decarbonizing hard-to-abate sectors. This paper highlights intermediate-temperature water electrolysis as an underexplored but promising technology that could bridge the efficiency gap between mature low-temperature and emerging high-temperature electrolyzers. It provides a holistic assessment that is relevant for R&D strategy, investment decisions, and policy frameworks supporting hydrogen scale-up.
👥 読者別の含意
🔬研究者:This paper offers a comprehensive overview of intermediate-temperature water electrolysis, highlighting its potential and challenges, and suggesting key research directions for advancing this underexplored technology.
🏢実務担当者:Corporate sustainability teams can use this analysis to evaluate emerging electrolysis technologies for green hydrogen production, considering efficiency, cost, and scalability for their decarbonization strategies.
🏛政策担当者:Policymakers should note the potential of intermediate-temperature electrolysis to complement existing hydrogen production pathways, informing funding priorities and technology-neutral policies to accelerate cost reductions and deployment.
📄 Abstract（原文）
Green or renewable hydrogen is steadily emerging as an attractive solution in the global energy transition, offering a sustainable pathway to decarbonize hard-to-abate sectors such as steel, ammonia, and methanol, among others. Its production via water electrolysis is dominated by four main technologies: alkaline, proton exchange membrane (PEM), anion exchange membrane (AEM), and solid oxide electrolyzer cells (SOECs), each with distinct advantages and limitations. While electrolyzers operating at temperatures less than 100 °C such as alkaline and PEM are commercially mature, they suffer from lower efficiencies. In contrast, high-temperature systems such as SOECs or emerging protonic ceramic electrochemical cells (PCECs) promise superior performance but introduce complexity and durability challenges. Positioned between these extremes is intermediate-temperature water electrolysis (ITWE), operating between 100 and 400 °C, which may offer an optimal balance of efficiency, material stability, and system simplicity. Despite growing academic interest, ITWE remains largely overlooked and underexplored, particularly from a practical, deployment-oriented standpoint. This perspective presents a holistic reflection on ITWE, critically examining its thermo/electrochemistry, scientific and engineering challenges, techno-commercial promise and trade-offs, and potential deployment scenarios while proposing future directions for research and innovation in the context of large-scale green hydrogen production.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1021/jacs.5c22471first seen 2026-05-15 19:38:33
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