An Atomic-to-Macroscale Assembled Ni/MoO2 Electrode for High-Efficiency and Long-Life Hydrogen Production.
高効率・長寿命水素生成のための原子からマクロスケールまで組み立てられたNi/MoO2電極 (AI 翻訳)
Shan Jiang, Wei Hu, Shizheng Zhou, Linfeng Yu, Liang Luo, Yunlong Zhang, Qiao Zhao, Zhibin Yu, Wei Liu, Xiaoming Sun, Liang Yu, Yanting Liu, Dehui Deng
🤖 gxceed AI 要約
日本語
この研究では、アルカリ水電解によるグリーン水素製造を効率化するために、原子レベルのヘテロ界面と3段階（ナノ・ミクロ・マクロ）の多孔性を持つNi/MoO2集積電極を開発した。この電極は1 A cm-2で145 mVの過電圧を達成し、市販Pt/Cより優れ、3500時間以上の安定動作を示す。工業条件下でも低エネルギー消費（4.3 kWh Nm-3 H2）で1000時間以上の耐久性を実証しており、実用化への貢献が期待される。
English
This study develops an integrated Ni/MoO2 electrode with atomic heterointerfaces and hierarchical porosity for efficient alkaline water electrolysis. The electrode achieves a low overpotential of 145 mV at 1 A cm-2 (vs. 300 mV for Pt/C) and stable operation for over 3500 h. Under industrial conditions, it delivers 1.80 V cell voltage with 4.3 kWh Nm-3 H2 energy consumption and >1000 h durability. The work provides a promising electrode design for cost-effective 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
日本は水素社会実現に向け、グリーン水素の低コスト製造技術を重要視している。本研究で開発された高効率・長寿命電極は、日本の水素戦略に直結する要素技術であり、実用化に向けた有力な選択肢を提供する。
In the global GX context
Globally, the paper advances the state-of-the-art in alkaline water electrolysis, a key technology for green hydrogen production. The demonstrated performance and durability under industrial conditions address major barriers to commercialization, making it relevant for global energy transition efforts.
👥 読者別の含意
🔬研究者:Provides a new electrode design strategy combining atomic-scale heterointerfaces with hierarchical porosity for enhanced HER performance.
🏢実務担当者:Offers a practical electrode that can reduce energy consumption and improve durability in industrial electrolyzers, potentially lowering green hydrogen production costs.
🏛政策担当者:Highlights the technological progress in hydrogen production, supporting policies that aim to scale up green hydrogen.
📄 Abstract（原文）
Developing highly active and durable electrodes for high-current-density alkaline water electrolysis is crucial for advancing cost-effective green hydrogen production. Herein, we report an atomic-to-macroscale assembly of an integrated Ni/MoO2 electrode possessing abundant atomic heterointerfaces with triscale (nano-micro-macro) porosity for high-performance hydrogen evolution. The electrode delivers an overpotential of 145 mV at 1 A cm-2 in 1 M KOH, markedly lower than the 300 mV of commercial Pt/C catalysts, while maintaining stable operation for over 3500 h. Practical application within an alkaline electrolyzer achieves a cell voltage of 1.80 V with an energy consumption of 4.3 kWh Nm-3 H2 at 1 A cm-2 under industrial conditions (30 wt % KOH at ≥85 °C), and operational durability exceeds 1000 h. Characterization and theoretical analysis elucidate a triple-enhancement effect on water electrolysis: (i) interfacial electron transfer from Ni to MoO2 moderately weakens H* adsorption and promotes the H2 desorption on the Ni sites, thereby boosting the intrinsic activity; (ii) triscale hierarchical porosity with hydrophilic MoO2 coating synergistically accelerates bubble detachment and electrolyte permeation, thereby enhancing mass transfer; and (iii) the strong Ni-MoO2 electronic interaction and their robust integration with the electrode skeleton significantly strengthen structural stability.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1021/jacs.5c21735first seen 2026-06-12 05:58:50
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