Kilowatt-Level Ethylene Glycol Electrooxidation at Industrial Current Densities Enabled by Synergistic C-H/O-H Activation on PdAu2/Ni1-xO.
キロワットレベルのエチレングリコール電気酸化を実現するPdAu2/Ni1-xO上の協調的C-H/O-H活性化 (AI 翻訳)
Jia Cheng, Yanhui Tang, Yang Xiang, Yuhang Chen, Wei Yuan, Ling Zhang, Xun Huang, Jianchuan Wang, Zidong Wei
🤖 gxceed AI 要約
日本語
本研究では、PdAu2/Ni1-xO触媒を用いたエチレングリコール酸化反応（EGOR）により、工業電流密度で安定動作する電解システムを開発した。実験と計算により、Ni1-xOがOH種を供給し、AuとPdがO-HおよびC-H開裂のエネルギー障壁を低下させる相乗メカニズムを解明。kWレベルのスケールアップにも成功し、エネルギー効率の高い電解製造パラダイムを提供する。
English
This work develops a PdAu2/Ni1-xO catalyst for ethylene glycol electrooxidation (EGOR) achieving stable operation at industrial current densities (500 mA/cm2 for 320 h). Synergistic C-H/O-H activation via Ni1-xO supplying *OH and Au/Pd lowering bond cleavage barriers is revealed. Successful kW-level scaling (6 cells, [email protected]) demonstrates an energy-efficient dual-product (hydrogen and chemicals) electrochemical manufacturing paradigm.
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
本触媒は、日本が推進する水素社会実現に向けた電解技術の高性能化に貢献する。特に、低電圧での安定動作とkWレベル実証は、国内の水素製造コスト低減に直結する。
In the global GX context
Globally, this work addresses the challenge of efficient, large-scale green hydrogen production by replacing OER with EGOR, reducing energy input. The kW-level demonstration advances electrochemical manufacturing for dual products, relevant to decarbonizing chemical industry.
👥 読者別の含意
🔬研究者:Provides mechanistic insights and a practical catalyst design for high-current-density EGOR.
🏢実務担当者:Demonstrates kW-level scalability, suggesting feasibility for industrial electrolysis systems.
🏛政策担当者:Highlights potential for integrated hydrogen and chemical production, supporting energy transition policy.
📄 Abstract（原文）
Water electrolysis for concurrent green chemical synthesis and hydrogen production represents a pivotal strategy to address global energy challenges. Ethylene glycol (EG) serves as a promising alternative anodic reactant to the oxygen evolution reaction (OER) due to its lower oxidation potential. However, industrial application of Pd-based catalysts remains limited by their tendency for oxidative deactivation. Herein, we fabricate a PdAu2/Ni1-xO catalyst for EG oxidation reaction (EGOR), which exhibits exceptional activity with potentials of 0.99 and 1.09 V vs RHE at 1.0 and 2.0 A cm-2, respectively. Integrated experimental and computational studies reveal that Ni1-xO supplies *OH species, while Au and Pd lower the energy barriers for O-H and C-H cleavage, respectively. Such synergistic mechanism facilitates the continuous reaction of EG and prevented the oxidative deactivation of Pd. In an integrated EGOR∥HER system, stable operation at 500 mA cm-2 was sustained for 320 h at voltages well below conventional water electrolysis, with successful scaling to kW-level (6 cells, 100 [email protected] V). This work establishes an energy-efficient, dual-product electrochemical manufacturing paradigm through effective anode-cathode coupling.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1021/jacs.6c00770first seen 2026-06-24 05:24:56
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