{"title":"Dual-Site Mn-Doped Vanadate Cathodes Involving Vanadium and Manganese Dual Redox Chemistry for High-Energy Aqueous Zinc-Ion Batteries","authors":"Xinghe Xu, Tianhao Wang, Xudong Zhao, Xuanhui Qu, Lifang Jiao, Yongchang Liu","doi":"10.1021/acsenergylett.5c02376","DOIUrl":null,"url":null,"abstract":"Popular vanadium-oxide and manganese-oxide based cathodes have garnered considerable attention for aqueous zinc-ion batteries (AZIBs) by virtue of their high discharge capacity and high working voltage, respectively. However, the low operating voltage of vanadium-oxide//Zn batteries and low specific capacity of manganese-oxide//Zn batteries significantly limit their practical applications. Herein, the V and Mn redox reactions are simultaneously activated in an intra-/interlayer dual-site Mn-doped Mn<sub>0.4</sub>V<sub>1.7</sub>O<sub>5</sub>·0.5H<sub>2</sub>O (MnVO) material to enhance the energy density. Specifically, the intralayer Mn-ions serve as redox centers to contribute capacity in the high-voltage region, while the interlayer Mn-ions mainly act as “pillars” to strengthen the layered structure. The combined spectroscopic/imaging analyses and theoretical computations elucidate the reversible V and Mn redox chemistry accompanied by H<sup>+</sup>/Zn<sup>2+</sup> coinsertion/extraction in MnVO. Consequently, the tailored MnVO cathode achieves a significantly enhanced energy density (1.83 and 1.42 times those of vanadium-oxide and manganese-oxide, respectively) and an ultralong cycling durability (10000 cycles) in AZIBs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"1 1","pages":""},"PeriodicalIF":18.2000,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Energy Letters ","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsenergylett.5c02376","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Popular vanadium-oxide and manganese-oxide based cathodes have garnered considerable attention for aqueous zinc-ion batteries (AZIBs) by virtue of their high discharge capacity and high working voltage, respectively. However, the low operating voltage of vanadium-oxide//Zn batteries and low specific capacity of manganese-oxide//Zn batteries significantly limit their practical applications. Herein, the V and Mn redox reactions are simultaneously activated in an intra-/interlayer dual-site Mn-doped Mn0.4V1.7O5·0.5H2O (MnVO) material to enhance the energy density. Specifically, the intralayer Mn-ions serve as redox centers to contribute capacity in the high-voltage region, while the interlayer Mn-ions mainly act as “pillars” to strengthen the layered structure. The combined spectroscopic/imaging analyses and theoretical computations elucidate the reversible V and Mn redox chemistry accompanied by H+/Zn2+ coinsertion/extraction in MnVO. Consequently, the tailored MnVO cathode achieves a significantly enhanced energy density (1.83 and 1.42 times those of vanadium-oxide and manganese-oxide, respectively) and an ultralong cycling durability (10000 cycles) in AZIBs.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.