{"title":"Effects of Hydrophobic Species on the Oxygen Reduction Reaction on the High-Index Planes of Pt3Fe","authors":"Akane Suzuki, Masashi Nakamura, Haruki Shimada, Nagahiro Hoshi","doi":"10.1007/s12678-022-00795-7","DOIUrl":null,"url":null,"abstract":"<div><p>Pt<sub>3</sub>Fe(111), Pt<sub>3</sub>Fe(775) = 7(111)–(111), and Pt<sub>3</sub>Fe(544) = 9(111)–(100) electrodes show the highest activity in the low-index planes, <i>n</i>(111)–(111), and <i>n</i>(111)–(100) series of Pt<sub>3</sub>Fe, respectively. The surfaces of these electrodes were modified with hydrophobic species such as THA<sup>+</sup>, 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 Pt<sub>3</sub>Fe(111) in 0.1 M HClO<sub>4</sub> containing 0.1 μM melamine was 2.1 times higher than that of Pt<sub>3</sub>Fe(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.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-022-00795-7","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
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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.
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.
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