Effect of Melamine on the Oxygen Reduction Reaction in the n(111)-(111) Series of Pt3Co

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2024-11-26 DOI:10.1007/s12678-024-00915-5

Takuro Kamei, Masashi Nakamura, Nagahiro Hoshi

{"title":"Effect of Melamine on the Oxygen Reduction Reaction in the n(111)-(111) Series of Pt3Co","authors":"Takuro Kamei, Masashi Nakamura, Nagahiro Hoshi","doi":"10.1007/s12678-024-00915-5","DOIUrl":null,"url":null,"abstract":"<div><p>Enhancement of the oxygen reduction reaction (ORR) activity is an important subject for the development of fuel cells. In this study, we prepared the <i>n</i>(111)-(111) series of Pt<sub>3</sub>Co single crystal electrodes using an induction heating furnace and investigated the ORR in 0.1 M HClO<sub>4</sub> using the rotation disk electrode (RDE). The specific activity of the ORR (<i>j</i><sub>k</sub>) increased monotonously with increasing terrace width <i>n</i> on the <i>n</i>(111)-(111) series of Pt<sub>3</sub>Co, showing the highest activity on Pt<sub>3</sub>Co(111). The value of <i>j</i><sub>k</sub> of Pt<sub>3</sub>Co(111) was 59-fold higher than that of Pt(111) at 0.95 V(RHE). This trend was different from those of the same series of Pt, Pt<sub>3</sub>Co, and Pt<sub>3</sub>Ni reported previously. Furthermore, the ORR activity was improved on all electrodes by adding melamine to the electrolytic solution. Melamine was preferentially adsorbed at the terrace edge. Pt<sub>3</sub>Co(553) <i>n</i> = 5 showed the highest activity. The values of <i>j</i><sub>k</sub> at 0.95 V(RHE) were 23- and 3.3-fold higher than those of Pt(553) <i>n</i> = 5 and Pt<sub>3</sub>Co(553) <i>n</i> = 5 without melamine modification, respectively. The durability of Pt<sub>3</sub>Co(553) <i>n</i> = 5 with melamine was improved 8.0-fold.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"16 2","pages":"263 - 274"},"PeriodicalIF":2.7000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-024-00915-5.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-024-00915-5","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Enhancement of the oxygen reduction reaction (ORR) activity is an important subject for the development of fuel cells. In this study, we prepared the n(111)-(111) series of Pt₃Co single crystal electrodes using an induction heating furnace and investigated the ORR in 0.1 M HClO₄ using the rotation disk electrode (RDE). The specific activity of the ORR (j_k) increased monotonously with increasing terrace width n on the n(111)-(111) series of Pt₃Co, showing the highest activity on Pt₃Co(111). The value of j_k of Pt₃Co(111) was 59-fold higher than that of Pt(111) at 0.95 V(RHE). This trend was different from those of the same series of Pt, Pt₃Co, and Pt₃Ni reported previously. Furthermore, the ORR activity was improved on all electrodes by adding melamine to the electrolytic solution. Melamine was preferentially adsorbed at the terrace edge. Pt₃Co(553) n = 5 showed the highest activity. The values of j_k at 0.95 V(RHE) were 23- and 3.3-fold higher than those of Pt(553) n = 5 and Pt₃Co(553) n = 5 without melamine modification, respectively. The durability of Pt₃Co(553) n = 5 with melamine was improved 8.0-fold.

Graphical Abstract

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.