{"title":"Ordered Adsorption of Oxygen via High-Density Low-Coordinated Ru Sites for Lithium–Oxygen Battery","authors":"Yu Zhang, Junguo Ma, Zewen Zhuang, Aijian Huang, Shuting Zhang, Wenbo Zhai, Yi Yu, Qing Peng, Hai Xiao, Caiyun Nan, Chen Chen","doi":"10.1021/acscatal.4c03294","DOIUrl":null,"url":null,"abstract":"Lithium–oxygen batteries (LOBs), despite high-energy densities, generally suffer from poor cycling performances, which put severe constraints on their commercialization. Herein, we demonstrate a cathode catalyst featuring a hollow structure with high-density, low-coordinated Ru active sites. The high-density low-coordinated Ru active sites could efficiently activate oxygen via bridge-adsorption configuration, and the hollow architecture could optimize the access of oxygen to the active sites and accommodate more Li<sub>2</sub>O<sub>2</sub>. These structural features could direct the Li<sub>2</sub>O<sub>2</sub> to grow along the (010) faces into a unique highly dispersed fluff-like morphology, which could be readily decomposed in charge process, thereby conferring a long battery stability under high-rate current, the LOB capable of running stably for >700 cycles under the high-rate current density of 1 A·g<sup>–1</sup>.","PeriodicalId":9,"journal":{"name":"ACS Catalysis ","volume":"29 1","pages":""},"PeriodicalIF":11.3000,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Catalysis ","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acscatal.4c03294","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
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Abstract
Lithium–oxygen batteries (LOBs), despite high-energy densities, generally suffer from poor cycling performances, which put severe constraints on their commercialization. Herein, we demonstrate a cathode catalyst featuring a hollow structure with high-density, low-coordinated Ru active sites. The high-density low-coordinated Ru active sites could efficiently activate oxygen via bridge-adsorption configuration, and the hollow architecture could optimize the access of oxygen to the active sites and accommodate more Li2O2. These structural features could direct the Li2O2 to grow along the (010) faces into a unique highly dispersed fluff-like morphology, which could be readily decomposed in charge process, thereby conferring a long battery stability under high-rate current, the LOB capable of running stably for >700 cycles under the high-rate current density of 1 A·g–1.
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.
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