Asymmetric Ru─O sites in self-activated catalysts for efficient electrochemical methanol oxidation and industrial-scale hydrogen generation.
非対称Ru-Oサイトを持つ自己活性化触媒による効率的な電気化学的メタノール酸化と工業規模の水素生成 (AI 翻訳)
Yujun Guo, Xueqin Mu, Yifan Zhang, Zhengyang Liu, Shengchen Wang, Qinghua Zhang, Jiarui Yang, Z. Zhuang, Jiayao Yuan, Shengjie Zhang, Suli Liu, Dingsheng Wang, Zhihui Dai
🤖 gxceed AI 要約
日本語
本論文は、RuOx@Mo(Mn)Ox触媒を用いたメタノール電解酸化による高効率水素生成を報告。工業的に必要な電流密度（1000 mA/cm2）で低電圧作動を実現し、300時間以上の安定性を示した。陰イオン交換膜電解槽でも安定動作し、グリーン水素と付加価値化学品の同時生産の可能性を示す。
English
This paper reports a RuOx@Mo(Mn)Ox catalyst for efficient methanol electrooxidation coupled with hydrogen production. It achieves 1000 mA/cm2 at low voltages, >98% Faradaic efficiency, and over 300 hours stability. Demonstrates potential for industrial co-production of green hydrogen and value-added chemicals.
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
日本の水素基本戦略ではグリーン水素の低コスト化が急務。本研究はRu系触媒の界面エンジニアリングにより高電流密度・高安定性を達成し、産業用電解装置への応用が期待される。日本の水素サプライチェーン構築に資する技術的知見を提供。
In the global GX context
Globally, green hydrogen production is critical for decarbonization. This work advances electrocatalyst design for industrial-scale water splitting by replacing OER with MOR, reducing energy consumption. The catalyst's high current density and stability address key bottlenecks for commercial electrolyzers, relevant to global renewable hydrogen targets.
👥 読者別の含意
🔬研究者:Provides insight into atomic-level interface engineering for Ru-based catalysts, achieving high activity and stability in MOR-assisted water splitting.
📄 Abstract（原文）
Electrochemical water splitting is a promising strategy for sustainable, large-scale hydrogen production. However, the commercialization of this technology is hindered by the sluggish kinetics and high overpotential of the oxygen evolution reaction (OER) at the anode, leading to elevated energy consumption. Replacing OER with the methanol oxidation reaction (MOR) offers a more energy-efficient alternative, yet the development of electrocatalysts that deliver high activity, selectivity, and long-term stability at ampere-level current densities remains a notable challenge. Here, we report an interface-engineered RuOx@Mo(Mn)Ox [RuOx nanoparticles deposited on a Mo(Mn)Ox matrix] catalyst featuring Ru─O sites with an asymmetric coordination environment, which enables optimized electron transfer and stabilization of highly active Ru species. This structural innovation allows for efficient methanol electrooxidation at industrially relevant current densities [1000 milliamperes per square centimeter (mA cm-2) at 1.41 volts versus reversible hydrogen electrode], achieving high selectivity (>98% Faradaic efficiency) and low anodic potentials. The RuOx@Mo(Mn)Ox-based two-electrode electrolyzer maintains 1000 mA cm-2 at a low cell voltage of 1.58 volts and remains stable for over 300 hours. Furthermore, in an anion exchange membrane electrolyzer, the catalyst demonstrates stable operation at 1000 mA cm-2 and a cell voltage of only 1.87 volts, highlighting its potential for industrial coproduction of green hydrogen and value-added chemicals. This work demonstrates how interface engineering at the atomic level can enable industrial-scale electrochemical processes with Ru-based catalysts, offering a scalable solution for the advancement of sustainable energy and chemical manufacturing.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1126/sciadv.aeb1299first seen 2026-06-27 05:25:26
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