ホウ素ドープ炭素オーバーレイヤーによるニッケル系触媒の硫黄被毒克服と低エネルギー水素製造の超安定化
Boron‐Doped Carbon Overlayers Conquer Sulfur Poisoning of Nickel‐Based Catalysts for Ultrastable Low‐Energy Hydrogen Production Coupled With Sulfion Oxidation (原題)
Zhaoyue Zhang, Shangguo Liu, Chaoyue Sun, Yanru Geng, Liang Yang, Haeseong Jang, Xien Liu, Liqiang Hou
🤖 gxceed AI 要約
日本語
本研究では、ホウ素ドープ炭素被覆ニッケル触媒（Ni@BC）を開発し、硫黄被毒を克服して低エネルギー水素製造を実現した。Ni@BCは硫黄吸着を最適化し、硫黄析出を抑制することで、1500時間以上の耐久性と低過電圧を達成。さらに水素発生反応（HER）も促進し、高電流密度でPt/Cを凌駕する性能を示した。スケールアップした電解装置でも安定動作と硫黄回収を両立した。
English
This study develops a boron-doped carbon-coated nickel catalyst (Ni@BC) that overcomes sulfur poisoning for low-energy hydrogen production. Ni@BC optimizes sulfur adsorption, suppressing insulating sulfur accumulation, achieving over 1500 h durability and ultralow overpotential. It also promotes the hydrogen evolution reaction, surpassing Pt/C at high current densities. A scaled-up electrolyzer demonstrates stable operation and simultaneous sulfur recovery.
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
日本の水素戦略やグリーンイノベーション基金事業において、低コストで効率的な水素製造技術は重要。本触媒は硫黄含有廃水を利用した水素製造と硫黄回収を可能にし、化学産業や廃水処理分野での応用が期待される。
In the global GX context
This work contributes to global efforts in low-energy hydrogen production, aligning with the IEA's net-zero targets. The catalyst's ability to couple hydrogen production with sulfion oxidation offers a pathway for waste-to-energy and resource recovery, relevant for industries seeking decarbonization and circular economy solutions.
👥 読者別の含意
🔬研究者:Provides a novel catalyst design strategy for sulfur-tolerant hydrogen production, relevant for electrocatalysis and energy materials research.
🏢実務担当者:Offers potential for low-energy hydrogen production and sulfur recovery in industrial wastewater treatment, though scale-up and economic feasibility need further validation.
🏛政策担当者:Highlights the potential of innovative catalysts to reduce energy costs in hydrogen production, supporting policy on green hydrogen and circular economy.
📄 Abstract（原文）
ABSTRACT Replacing the oxygen evolution reaction with the sulfion oxidation reaction (SOR) offers a promising route to low‐energy hydrogen production, yet conventional catalysts are rapidly deactivated by sulfur poisoning. Herein, we report a boron‐doped carbon‐coated nickel catalyst (Ni@BC) that overcomes this challenge. Boron incorporation moderately enhances carbon–sulfur orbital coupling, optimizing sulfur adsorption to enable a stepwise pathway with facile S 8 desorption and complete suppression of insulating sulfur accumulation. Ni@BC thus delivers an ultralow SOR overpotential (0.294 V at 10 mA cm −2 ) and record durability exceeding 1500 h without degradation. Concurrently, boron doping promotes the hydrogen evolution reaction (HER) by facilitating water adsorption and dissociation and tuning the hydrogen adsorption free energy to near thermoneutral, achieving an overpotential of 38.7 mV at 10 mA cm −2 and surpassing commercial Pt/C at high current densities. A symmetric electrolyzer employing Ni@BC as both electrodes needs only 0.573 V at 100 mA cm −2 , with stable operation exceeding 440 h and simultaneous sulfur recovery. When scaled up to a 50 cm 2 continuous‐flow electrolyzer, the system maintains an ultralow voltage of 0.70 V at 5 A, while enabling stable hydrogen generation and gram‐scale sulfur production for over 200 h.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/adfm.78161first seen 2026-09-03 05:10:31
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