Towards Climate Neutrality by 2050: Role of Aluminum for Short‐ and Long‐Term Energy and Hydrogen Storage
2050年までの気候中立性に向けて：短期的および長期的なエネルギー・水素貯蔵におけるアルミニウムの役割 (AI 翻訳)
L. Trombetti, Stefano Passerini, Linda Barelli
🤖 gxceed AI 要約
日本語
本論文は、アルミニウムをエネルギーキャリアとして活用し、高体積エネルギー密度とリサイクル可能性を活かした短期的・長期的エネルギー貯蔵の可能性を探る。アルミニウム‐水蒸気酸化経路により熱と水素を生成し、γ-Al2O3は脱炭素製錬でリサイクル可能。技術経済的分析では、30～36%の往復効率と競争力のあるコストを示し、水素貯蔵密度はClean Hydrogen目標の7倍に達する。アルミニウムは脱炭素エネルギーシステムにおいて信頼性が高く高密度で完全リサイクル可能な貯蔵を実現する可能性がある。
English
This perspective argues that aluminum, with its high volumetric energy density, global availability, and full recyclability, is a strategic energy carrier for long-term storage. The aluminum-steam oxidation pathway produces heat and hydrogen, with γ-Al2O3 recyclable in decarbonized smelting. Techno-economic analysis shows round-trip efficiencies of 30-36% and competitive costs for power-to-X applications. Aluminum-based hydrogen storage achieves densities seven times higher than Clean Hydrogen targets, suggesting aluminum can complement hydrogen in decarbonized energy systems.
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・アンモニアを重要なエネルギーキャリアとして推進しているが、本論文はアルミニウムを代替・補完的な貯蔵媒体として提案する。高密度でリサイクル可能なアルミニウム貯蔵は、日本が目指す水素社会の実現に新たな選択肢を提供する可能性がある。
In the global GX context
As the global energy transition intensifies, this paper introduces aluminum as a high-density, recyclable energy carrier that could complement hydrogen storage. It offers a novel pathway for seasonal storage and sector coupling, with implications for power-to-X strategies and renewable energy integration worldwide.
👥 読者別の含意
🔬研究者:The paper provides a comprehensive techno-economic assessment of aluminum-based energy storage, comparing it to hydrogen and highlighting potential for high-density storage.
🏢実務担当者:Companies in the aluminum or energy storage sectors can evaluate the feasibility of integrating aluminum-steam oxidation in renewable-powered smelting plants.
🏛政策担当者:Policymakers seeking long-duration energy storage solutions for climate neutrality should consider aluminum as a strategic resource alongside hydrogen.
📄 Abstract（原文）
Reaching climate neutrality by 2050 requires innovative long‐term energy storage (LTES) solutions beyond the current use of fossil fuels. While hydrogen is widely promoted, its low volumetric energy density, complex storage requirements, and limited infrastructure readiness raise questions about scalability. This Perspective paper argues that aluminum deserves attention as a strategic energy carrier. With an exceptionally high volumetric energy density, global availability, and full recyclability, aluminum offers unique advantages for seasonal storage and sector coupling. We highlight the promising high‐temperature aluminum–steam oxidation pathway, which produces both heat and hydrogen alongside γ‐Al2O3, directly recyclable in decarbonized smelting processes. Beyond technical feasibility, we discuss system‐level opportunities, from coupling aluminum‐based storage with renewable‐powered smelting plants to enabling multi‐service energy hubs for electricity and mobility. Preliminary techno‐economic assessments show that aluminum‐based hybrid cycles can achieve round‐trip efficiencies of 30–36% in power‐to‐power applications and competitive levelized costs for electricity and hydrogen production in the power‐to‐X framework. Moreover, key performance indexes show aluminum‐based hydrogen aboveground storage can reach densities exceeding Clean Hydrogen targets by a factor of seven, with competitive CAPEX and OPEX values. These results highlight aluminum's potential to complement or outperform hydrogen in enabling reliable, high‐density, and fully recyclable energy storage within decarbonized energy systems.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/aenm.202505514first seen 2026-05-15 20:20:21
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