Co(1–x–y)FexZny-Glycerolate Microspheres as Electrocatalysts for the Oxygen Evolution Reaction

IF 5.5 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-08-27 DOI:10.1021/acsaem.5c01604

Mesaque C. França, Irlan S. Lima, Alireza Ghorbani, Reza Shahbazian-Yassar, Iranaldo S. da Silva, Auro A. Tanaka, Lúcio Angnes*, Josué M. Gonçalves* and Pedro de Lima-Neto*,

{"title":"Co(1–x–y)FexZny-Glycerolate Microspheres as Electrocatalysts for the Oxygen Evolution Reaction","authors":"Mesaque C. França, Irlan S. Lima, Alireza Ghorbani, Reza Shahbazian-Yassar, Iranaldo S. da Silva, Auro A. Tanaka, Lúcio Angnes*, Josué M. Gonçalves* and Pedro de Lima-Neto*, ","doi":"10.1021/acsaem.5c01604","DOIUrl":null,"url":null,"abstract":"Coordination compounds based on transition metals have attracted significant attention for electrocatalyst applications due to their tunable composition and excellent properties as electrode materials. Herein, the design of ternary CoFeZn-glycerolate (CoFeZn-Gly) as an efficient electrocatalyst for oxygen evolution reaction (OER) in an alkaline medium is reported. The combination of Co, Fe, and Zn in the generated microspheres, approaching equimolar conditions, was noted to tend to generate aggregated spheres with an average size of ∼306 nm. The optimized CoFeZn-Gly OER electrocatalyst showed an overpotential of 335 mV (at a current density of 10 mA cm–2) and a Tafel slope of 37.2 mV dec–1, having the glassy carbon electrode (GCE) as a substrate. Further, the ternary electrocatalyst delivered good stability with a potential retention of 99.22% after 24 h of chronopotentiometry collected at 10 mA cm–2, in a 1.0 M KOH electrolyte.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"8 17","pages":"12618–12626"},"PeriodicalIF":5.5000,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsaem.5c01604","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.5c01604","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Coordination compounds based on transition metals have attracted significant attention for electrocatalyst applications due to their tunable composition and excellent properties as electrode materials. Herein, the design of ternary CoFeZn-glycerolate (CoFeZn-Gly) as an efficient electrocatalyst for oxygen evolution reaction (OER) in an alkaline medium is reported. The combination of Co, Fe, and Zn in the generated microspheres, approaching equimolar conditions, was noted to tend to generate aggregated spheres with an average size of ∼306 nm. The optimized CoFeZn-Gly OER electrocatalyst showed an overpotential of 335 mV (at a current density of 10 mA cm^–2) and a Tafel slope of 37.2 mV dec^–1, having the glassy carbon electrode (GCE) as a substrate. Further, the ternary electrocatalyst delivered good stability with a potential retention of 99.22% after 24 h of chronopotentiometry collected at 10 mA cm^–2, in a 1.0 M KOH electrolyte.

查看原文本刊更多论文

Co(1-x-y) fexzny -甘油微球作为析氧反应的电催化剂

基于过渡金属的配位化合物由于其可调的组成和作为电极材料的优异性能，在电催化剂方面的应用受到了极大的关注。本文报道了三元cofezn -甘油（CoFeZn-Gly）在碱性介质中作为析氧反应（OER）的高效电催化剂的设计。Co， Fe和Zn在生成的微球中结合，接近等摩尔条件，倾向于生成平均尺寸为~ 306 nm的聚集球。优化后的CoFeZn-Gly OER电催化剂以玻碳电极（GCE）为衬底，过电位为335 mV（电流密度为10 mA cm-2）， Tafel斜率为37.2 mV dec1。此外，在1.0 M KOH的电解液中，在10 mA cm-2条件下收集24小时后，三元电催化剂具有良好的稳定性，电位保留率为99.22%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.