疏水物质对Pt3Fe高折射率面上氧还原反应的影响

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL Electrocatalysis Pub Date : 2022-11-22 DOI:10.1007/s12678-022-00795-7

Akane Suzuki, Masashi Nakamura, Haruki Shimada, Nagahiro Hoshi

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引用次数: 0

摘要

Pt3Fe(111)、Pt3Fe(775) = 7(111) -(111)和Pt3Fe(544) = 9(111) -(100)电极分别在Pt3Fe的n(111) -(111)和n(111) -(100)系列低折射率面表现出最高的活性。用THA+、三聚氰胺、离子液体([MTBD][beti])等疏水性物质对电极表面进行修饰，研究对氧还原反应(ORR)的影响。所有疏水物质都提高了所有电极上的ORR活性。在含0.1 μM三聚氰胺的0.1 M HClO4中，Pt3Fe(111)的ORR活性比不含三聚氰胺的Pt3Fe(111)高2.1倍，比裸Pt(111)高39倍。在含三聚氰胺溶液中，所有电极的耐久性都得到了提高。

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Effects of Hydrophobic Species on the Oxygen Reduction Reaction on the High-Index Planes of Pt3Fe

Pt₃Fe(111), Pt₃Fe(775) = 7(111)–(111), and Pt₃Fe(544) = 9(111)–(100) electrodes show the highest activity in the low-index planes, n(111)–(111), and n(111)–(100) series of Pt₃Fe, respectively. The surfaces of these electrodes were modified with hydrophobic species such as THA⁺, melamine, and ionic liquid ([MTBD][beti]), and the effects on the oxygen reduction reaction (ORR) were studied. All the hydrophobic species improved the ORR activity on all the electrodes examined. The ORR activity of Pt₃Fe(111) in 0.1 M HClO₄ containing 0.1 μM melamine was 2.1 times higher than that of Pt₃Fe(111) without melamine, giving 39 times higher activity than that of bare Pt(111). The durability was improved on all the electrodes examined in melamine-containing solution.

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.