Advances in Alkaline Water Electrolysis—The Role of In Situ Ionic Activation in Green Hydrogen Production
アルカリ水電解の進歩—グリーン水素製造におけるその場イオン活性化の役割 (AI 翻訳)
Vladimir M. Nikolić, Katarina Dimić-Mišić, Slađana Lj. Maslovara, Dejana P. Popović, M. Gigov, S. Krstić, Milica P. Marčeta Kaninski
🤖 gxceed AI 要約
日本語
本レビューは、アルカリ水電解の基本原理、電極材料、触媒開発を包括的に解説。特に、運転中に電解液へ遷移金属イオンを添加する「その場イオン活性化」戦略に焦点を当て、Ni-Co-Mo系が水素発生反応を大幅に向上させるメカニズムを電気化学測定と表面解析に基づき明らかにした。この手法は低コストでスケーラブルなグリーン水素製造の効率化に貢献する。
English
This review comprehensively covers alkaline water electrolysis fundamentals, electrode materials, and catalyst development, with a focus on in situ ionic activation—adding transition metal ions to the electrolyte during operation. It demonstrates that Ni-Co-Mo systems significantly enhance hydrogen evolution reaction performance via surface reconstruction and synergistic effects, offering a scalable and cost-effective pathway for green hydrogen production.
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
日本政府は水素基本戦略を掲げ、グリーン水素のコスト低減と大規模化を推進中。本レビューのイオン活性化手法は、既存電解槽への適用が容易で、日本の水素サプライチェーン構築に直接貢献する可能性がある。
In the global GX context
As global hydrogen strategies accelerate, improving electrolysis efficiency is critical. This review introduces in situ ionic activation as a practical method to boost performance without complex catalyst synthesis, offering a pathway to cheaper green hydrogen—a key enabler for hard-to-abate sectors worldwide.
👥 読者別の含意
🔬研究者:Provides a thorough overview of alkaline electrolysis and introduces in situ ionic activation as a promising research direction.
🏢実務担当者:Highlights a low-cost, scalable technique to improve electrolyzer performance, relevant for engineering teams.
🏛政策担当者:Supports technology deployment policies by identifying a cost-effective innovation for green hydrogen production.
📄 Abstract（原文）
Alkaline water electrolysis remains one of the leading and most mature technologies for large-scale hydrogen production. Its advantages stem from the use of inexpensive, earth-abundant materials and well-established industrial deployment, yet the technology continues to face challenges, including sluggish hydrogen evolution reaction (HER) kinetics and energy-efficiency limitations compared with acidic electrolysis systems. This review provides a comprehensive overview of the fundamental principles governing alkaline electrolysis, encompassing electrolyte chemistry, electrode materials, electrochemical mechanisms, and the roles of overpotentials, cell resistances, and surface morphology in determining system performance. Key developments in catalytic materials are discussed, highlighting both noble-metal and non-noble-metal electrocatalysts, as well as advanced approaches to surface modification and nanostructuring designed to enhance catalytic activity and long-term stability. Particular emphasis is placed on the emerging strategy of in situ ionic activation, wherein transition-metal ions and oxyanions are introduced directly into the operating electrolyte. These species dynamically interact with electrode surfaces under polarization, inducing real-time surface reconstruction, improving water dissociation kinetics, tuning hydrogen adsorption energies, and extending electrode durability. Results derived from polarization measurements, electrochemical impedance spectroscopy, and surface morphology analyses consistently demonstrate that ionic activators, such as Ni–Co–Mo systems, significantly increase the HER performance through substantial increase in surface roughness and increased intrinsic electrocatalytic activity through synergy of d-metals. By integrating both historical context and recent research findings, this review underscores the potential of ionic activation as a scalable and cost-effective way toward improving the efficiency of alkaline water electrolysis and accelerating progress toward sustainable, large-scale green hydrogen production.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/catal16010098first seen 2026-05-15 19:40:11
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