Waste‐derived electrocatalysts for green hydrogen production: Standardized benchmarking, techno‐economic translation, and circular engineering barriers
廃棄物由来の電極触媒によるグリーン水素製造：標準化ベンチマーキング、技術経済的翻訳、および循環工学の障壁 (AI 翻訳)
R. Ashok, T. G. Sakthivel
🤖 gxceed AI 要約
日本語
このレビューでは、廃棄物由来の電極触媒による水電解水素製造について、標準化ベンチマーキングと技術経済的分析を重視。実験室レベルでは有望な性能を示すが、実用化には高電流密度試験や耐久性向上が課題。廃棄物原料の前処理や不純物管理、LCOHへの変換を提案し、循環型エンジニアリングの障壁を整理。
English
This review evaluates waste-derived electrocatalysts for green hydrogen production via water electrolysis, emphasizing standardized benchmarking and techno-economic analysis. While laboratory results show promising performance (HER overpotentials as low as 26 mV), most studies lack high-current-density and long-duration tests. The authors propose a roadmap to translate voltage to Levelized Cost of Hydrogen (LCOH) and address circular engineering barriers.
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2023年水素基本戦略を改定し、グリーン水素の導入拡大を掲げている。本レビューは廃棄物由来触媒によるコスト低減と資源循環を両立する観点から、日本の水素サプライチェーン構築に示唆を与える。特に、触媒の標準化ベンチマークやLCOH評価は、日本のNEDOや産総研の研究開発にも有用。
In the global GX context
This review directly addresses the global green hydrogen scale-up challenge by focusing on waste-derived catalysts, which can reduce reliance on critical materials. The emphasis on standardized benchmarking and LCOH translation aligns with the needs of the Global Hydrogen Council, IRENA, and national hydrogen strategies (e.g., EU's REPowerEU, Japan's Basic Hydrogen Strategy). It also contributes to circular economy goals.
👥 読者別の含意
🔬研究者:Researchers can use the proposed roadmap and benchmarking framework to align their electrocatalyst development with commercial viability metrics.
🏢実務担当者:Corporate R&D teams in electrolyzer manufacturing or hydrogen project developers can adopt the standardized testing protocols and LCOH modeling to evaluate waste-derived catalysts for potential scale-up.
🏛政策担当者:Policymakers can reference the paper to support funding for circular economy approaches in hydrogen production, emphasizing the need for durability standards and cross-sector waste valorization.
📄 Abstract（原文）
Green hydrogen is increasingly viewed as a decarbonization pathway for refining, chemicals, steel, maritime transport, and long‐duration energy storage; however, its deployment remains constrained by electrolyzer cost, electricity price, water demand, catalyst durability, and reliance on precious or critical materials. This review evaluates waste‐derived electrocatalysts as a circular engineering strategy for water electrolysis. Recent catalysts derived from biomass, shell waste, plastics, electronic waste, and spent batteries are assessed for hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water‐splitting performance. Representative reports show HER overpotentials as low as 26 mV at 10 mA cm −2 , competitive OER overpotentials in the low hundreds of millivolts at 10 mA cm −2 , and selected alkaline full‐cell voltages near 1.597 V at 10 mA cm −2 under laboratory conditions. However, most reported results remain limited to half‐cell tests, low current densities, and short stability durations of 30–125 h, well below commercial durability expectations. Therefore, this review emphasizes standardized benchmarking, feedstock pretreatment, impurity control, high‐current‐density testing, and the translation of voltage to the Levelized Cost of Hydrogen (LCOH). A practical roadmap is proposed for advancing waste‐derived electrocatalysts from promising laboratory materials to scalable electrolyzer components.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/ep.70540first seen 2026-06-19 05:27:00
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