用于乙二醇直接燃料电池的絮凝结构高熵合金阳极电催化剂

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2024-05-11 DOI:10.1016/j.apcata.2024.119796

Wei Wang, Lingling Miao, Wendi Dang, Yangshuai Cheng, Xiang Li, Baodui Chai

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引用次数: 0

摘要

具有特殊形态的铂基合金催化剂备受关注。本文通过共还原法制备了一种絮凝结构的高熵合金（HEA）（命名为 F-PtBiCuCoMo/C）电催化剂，可大大提高催化剂的整体性能并减少铂用量。在乙二醇氧化反应（EGOR）中，它的质量活性为 1.08 A mg-1Pt，而且具有良好的耐久性和较高的剩余电流密度（3000 s 后为 0.27 A mg-1Pt）。值得注意的是，在组装好的直接乙二醇燃料电池（DEGFC）中，其功率密度达到 17.9 mW cm-2，是商用 Pt/C 参考材料的 2.4 倍。因此，这种 F-PtBiCuCoMo/C 电催化剂将成为促进乙二醇燃料电池技术发展的良好选择。

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Flocculent-structured high-entropy-alloy anode electrocatalyst for direct ethylene glycol fuel cells

The Pt-based alloys catalysts with special morphology attract great attention. Herein, a flocculent-structured high-entropy-alloy (HEA) (named as F-PtBiCuCoMo/C) electrocatalyst is prepared by co-reduction, which can greatly improve the overall catalytic performance and reduce Pt-usage. In ethylene glycol oxidation reaction (EGOR), it has mass activity of 1.08 A mg⁻¹_Pt, which also has a good durability with high residual current density (0.27 A mg⁻¹_Pt after 3000 s). Notably, the power density reached 17.9 mW cm⁻² in as-assembled direct ethylene glycol fuel cells (DEGFC), which exceeded commercial Pt/C references by 2.4 times. Thence, this F-PtBiCuCoMo/C electrocatalyst would be a good option for the advancement of DEGFC technology.

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来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.