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

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

引用次数: 0

Abstract

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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疏水物质对Pt3Fe高折射率面上氧还原反应的影响

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。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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

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