Mnco2o4 spinel microsphere assembled with flake structure as a cathode for high-performance zinc ion battery

Yadav N.; Khamsanga S.; Pattananuwat P.Kheawhom S.Qin J.

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Mnco2o4 spinel microsphere assembled with flake structure as a cathode for high-performance zinc ion battery

机译：Mnco2o4 spinel microsphere assembled with flake structure as a cathode for high-performance zinc ion battery

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? 2023 Elsevier LtdAqueous rechargeable zinc-ion batteries (ZIBs) with manganese-based materials as a cathode have suffered from limitations in energy density and life cycle performance. Materials for use as cathodes for ZIBs are constantly being researched in order to achieve high electrochemical performance. Herein, a spinel MnCo2O4 microsphere assembled with the interconnected micro- and nanoflake structures has been successfully synthesized via hydrothermal method. The dynamic electrochemistry properties of a zinc-ion battery with a MnCo2O4 cathode are demonstrated through the study of charge/discharge process. The constructed zinc foil anode with the MnCo2O4 cathode reveals the discharge capacity of 595.3 mAh g?1 at 0.05 A g?1. The Zn//MnCo2O4 battery achieves energy density values in the range of 714 to 207 Wh kg?1 with power density values in the range of 60 to 1200 W kg?1. The good cycle stability of 85 retention capacity after 250 cycles at 0.2 A g?1 is reported. Additionally, the structural development during cycling at the atomic level is examined by ex-situ measurement, indicating that the activation process of MnCo2O4 was primarily developed through the development of Mn2+/Mn3+ and Co2+/Co3+ electron states, inducing the electro-capacity properties of ZIBs.

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《Journal of Energy Storage》 |2023年第8期|1.1-1.10|共10页
作者
Yadav N.; Khamsanga S.; Pattananuwat P.Kheawhom S.Qin J.;
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Department of Materials Science Faculty of Science Chulalongkorn University||Center of Excellence on Petrochemical and Materials Technology Chulalongkorn University;

Department of Materials Science Faculty of Science Chulalongkorn University;

Department of Materials Science Faculty of Science Chulalongkorn UniversityDepartment of Materials Science Faculty of Science Chulalongkorn UniversityDepartment of Materials Science Faculty of Science Chulalongkorn University||Center of Excellence on PetrDepartment of Chemical Engineering Faculty of Engineering Chulalongkorn university||Center of Excellence on Advanced Materials for Energy Storage Chulalongkorn UniversityMetallurgy and Materials Science Research Institute Chulalongkorn University||Center of Excellence on Advanced Materials for Energy Storage Chulalongkorn University;

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正文语种英语
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Hydrothermal synthesis; Manganese-cobalt spinel; Microsphere; MnCo2O4; Zinc-ion battery;

Mnco2o4 spinel microsphere assembled with flake structure as a cathode for high-performance zinc ion battery

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