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المؤلفDe Luna, Yannis
المؤلفAlsulaiti, Asma
المؤلفAhmad, Mohammad I.
المؤلفNimir, Hassan
المؤلفBensalah, Nasr
تاريخ الإتاحة2023-01-26T09:36:58Z
تاريخ النشر2023
اسم المنشورFrontiers in Chemistry
المعرّفhttp://dx.doi.org/10.3389/fchem.2023.1101459
الاقتباسDe Luna Y, Alsulaiti A, Ahmad MI, Nimir H and Bensalah N (2023) Electrochemically stable tunnel-type α-MnO2-based cathode materials for rechargeable aqueous zinc-ion batteries. Front. Chem. 11:1101459. doi: 10.3389/fchem.2023.1101459
معرّف المصادر الموحدhttp://hdl.handle.net/10576/38946
الملخصThe purpose of this study is the synthesis of α-MnO2-based cathode materials for rechargeable aqueous zinc ion batteries by hydrothermal method using KMnO4 and MnSO4 as starting materials. The aim is to improve the understanding of Zn2+ insertion/de-insertion mechanisms. The as-prepared solid compounds were characterized by spectroscopy and microscopy techniques. X-ray diffraction showed that the hydrothermal reaction forms α-MnO2 and Ce4+-inserted MnO2 structures. Raman spectroscopy confirmed the formation of α-MnO2 with hexagonal MnO2 and Ce-MnO2 structures. Scanning electron microscopy (SEM) confirmed the formation of nanostructured MnO2 (nanofibers) and Ce-MnO2 (nanorods). The electrochemical performance of MnO2 was evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) tests in half-cells. CV results showed the reversible insertion/de-insertion of Zn2+ ions in MnO2 and Ce-MnO2. GCD cycling tests of MnO2 and Ce-MnO2 at 2500 mA/g demonstrated an impressive electrochemical performance, excellent cycling stability throughout 500 cycles, and high rate capability. The excellent electrochemical performance and the good cycling stability of MnO2 and Ce-MnO2 nanostructures by simple method makes them promising cathode materials for aqueous rechargeable zinc-ion batteries.
راعي المشروعThis work was funded by Qatar University through its Collaborative Grants Funding Program with project number QUCG-CAS-21/23-602.
اللغةen
الناشرFrontiers Media
الموضوعenergy storage
aqueous rechargeable zinc-ion batteries
manganese oxide
hydrothermal method
electrochemical performance
العنوانElectrochemically stable tunnel-type α-MnO2-based cathode materials for rechargeable aqueous zinc-ion batteries
النوعArticle
رقم المجلد11
ESSN2296-2646


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