Acidic Oxygen Evolution Reaction Activity, Stability, and Durability of Copper and/or Manganese Cobalt Oxide Spinels

IF 13.1 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2025-04-29 DOI:10.1021/acscatal.5c0052310.1021/acscatal.5c00523

Christopher Pantayatiwong Liu, Ethan Hwjchim Vang, Tatiana Priamushko, Camille Roiron, Serhiy Cherevko and Plamen Atanassov*,

{"title":"Acidic Oxygen Evolution Reaction Activity, Stability, and Durability of Copper and/or Manganese Cobalt Oxide Spinels","authors":"Christopher Pantayatiwong Liu, Ethan Hwjchim Vang, Tatiana Priamushko, Camille Roiron, Serhiy Cherevko and Plamen Atanassov*, ","doi":"10.1021/acscatal.5c0052310.1021/acscatal.5c00523","DOIUrl":null,"url":null,"abstract":"Cu and Mn was incorporated into Co spinels and the structural and electrochemical properties of the resulting materials were investigated. Cu and Mn were found to reside exclusively in the octahedral sites in the spinel lattice. The incorporation of Mn and especially Cu improved initial activity for the oxygen evolution reaction in an acidic environment. The Mn-containing catalysts demonstrated substantially improved potential cycling durability. This was explained through cyclic voltammetry and online inductively coupled plasma mass spectrometry (ICP-MS) by the role of Mn on limiting the oxidation of tetrahedrally coordinated Co2+. In potentiostatic conditions, however, pure Co spinel outperformed the multimetal oxides over time. In total, these findings stress the importance of stabilizing the tetrahedral Co2+ site through incorporation of other elements, and the improvements in electrochemical activity and stability that can thereby be realized.","PeriodicalId":9,"journal":{"name":"ACS Catalysis ","volume":"15 10","pages":"7956–7965 7956–7965"},"PeriodicalIF":13.1000,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acscatal.5c00523","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Catalysis ","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acscatal.5c00523","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Cu and Mn was incorporated into Co spinels and the structural and electrochemical properties of the resulting materials were investigated. Cu and Mn were found to reside exclusively in the octahedral sites in the spinel lattice. The incorporation of Mn and especially Cu improved initial activity for the oxygen evolution reaction in an acidic environment. The Mn-containing catalysts demonstrated substantially improved potential cycling durability. This was explained through cyclic voltammetry and online inductively coupled plasma mass spectrometry (ICP-MS) by the role of Mn on limiting the oxidation of tetrahedrally coordinated Co²⁺. In potentiostatic conditions, however, pure Co spinel outperformed the multimetal oxides over time. In total, these findings stress the importance of stabilizing the tetrahedral Co²⁺ site through incorporation of other elements, and the improvements in electrochemical activity and stability that can thereby be realized.

查看原文本刊更多论文

铜和/或锰钴氧化物尖晶石的酸性析氧反应活性、稳定性和耐久性

将Cu和Mn掺入钴尖晶石中，研究了材料的结构和电化学性能。发现Cu和Mn只存在于尖晶石晶格的八面体位置。锰尤其是铜的加入提高了酸性环境下析氧反应的初始活性。含锰催化剂的潜在循环耐久性得到了显著提高。通过循环伏安法和在线电感耦合等离子体质谱法（ICP-MS）解释了Mn在限制四面体配位Co2+氧化中的作用。然而，在恒电位条件下，随着时间的推移，纯钴尖晶石的性能优于多金属氧化物。总之，这些发现强调了通过加入其他元素来稳定四面体Co2+位的重要性，以及由此可以实现的电化学活性和稳定性的提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.