WO2.72-modulated Ru cluster boosting dual-site adsorption for efficient and CO-resistant anion exchange membrane fuel cells

IF 17.2 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis Pub Date : 2026-07-01 Epub Date: 2026-07-02 DOI:10.1016/S1872-2067(26)65066-8

Xu Yu, Han Tian, Ziyi Yu, Fantao Kong, Min Wang, Ruxiang Shen, Xiangzhi Cui, Jianlin Shi

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引用次数: 0

Abstract

A dual-site synergistic catalytic mechanism is proposed to optimize the OHad binding energy (OHBE) by constructing ultrafine Ru nanoclusters modified with highly oxygenophilic WO_2.72 clusters in nitrogen-doped carbon carriers, which can optimize the adsorptions of OH_ad and active hydrogen species, respectively, resulting in a marked increase in hydrogen oxidation reaction (HOR) activity. The constructed Ru-WO_2.72-NC shows a HOR mass activity about 8 times that of Pt-C, and the corresponding alkaline exchange membrane fuel cells demonstrate rather higher peak power densities than Ru-NC with 1.193 W cm^–2 and more than 1 W cm^–2 in H₂ fuel and CO/H₂ mixtures, respectively. The excellent alkaline HOR performance of Ru-WO_2.72-NC is attributed to the adsorption of OH_ad species by WO_2.72 clusters, which synergizes with the adsorption and dissociation of hydrogen on Ru to facilitate the Volmer step. The success in constructing dual-site synergistic catalysis of Ru-WO_2.72-NC anode provides valuable insight and new guidelines for designing and studying high-activity alkaline HOR catalysts.

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wo2.72调制Ru簇促进高效耐co阴离子交换膜燃料电池的双点吸附

提出了一种双位点协同催化机制，通过在氮掺杂碳载体上构建高亲氧WO2.72簇修饰的超细Ru纳米团簇来优化OHad结合能（OHBE），从而分别优化OHad和活性氢的吸附，从而显著提高氢氧化反应（HOR）活性。构建的Ru-WO2.72-NC的HOR质量活性约为Pt-C的8倍，相应的碱性交换膜燃料电池的峰值功率密度高于Ru-NC，在H2燃料和CO/H2混合物中分别为1.193 W cm-2和1 W cm-2以上。Ru-WO2.72- nc具有优异的碱性HOR性能是由于WO2.72簇对OHad的吸附，与氢在Ru上的吸附和解离协同作用，促进了Volmer步骤。构建Ru-WO2.72-NC双阳极协同催化剂的成功为设计和研究高活性碱性HOR催化剂提供了有价值的见解和新的指导。

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来源期刊

Chinese Journal of Catalysis 工程技术-工程：化工

CiteScore

25.80

自引率

10.30%

发文量

235

审稿时长

1.2 months

期刊介绍： The journal covers a broad scope, encompassing new trends in catalysis for applications in energy production, environmental protection, and the preparation of materials, petroleum chemicals, and fine chemicals. It explores the scientific foundation for preparing and activating catalysts of commercial interest, emphasizing representative models.The focus includes spectroscopic methods for structural characterization, especially in situ techniques, as well as new theoretical methods with practical impact in catalysis and catalytic reactions.The journal delves into the relationship between homogeneous and heterogeneous catalysis and includes theoretical studies on the structure and reactivity of catalysts.Additionally, contributions on photocatalysis, biocatalysis, surface science, and catalysis-related chemical kinetics are welcomed.