| DOI | Trouver le DOI : https://doi.org/10.1016/j.matchemphys.2015.12.009 |
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| Auteur | Rechercher : Hou, Yan; Rechercher : Tang, Hongwei; Rechercher : Li, Bao; Rechercher : Chang, Kun; Rechercher : Chang, Zhaorong; Rechercher : Yuan, Xiao-Zi1; Rechercher : Wang, Haijiang1 |
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| Affiliation | - Conseil national de recherches du Canada. Énergie, les mines et l'environnement
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| Format | Texte, Article |
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| Sujet | Capacitors; Chemical compounds; Cyclic voltammetry; Electrochemical electrodes; Electrochemical properties; Electrodes; Electrolytes; Electrolytic capacitors; Inorganic compounds; Manganese; Manganese oxide; Synthesis (chemical); X ray diffraction; Coulombic efficiency; Discharge capacities; Electrochemical performance; Electrochemical techniques; Galvanostatic charge discharges; High specific capacity; Impedance measurement; Solvothermal synthesis; Electric discharges |
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| Résumé | The layered sodium manganese oxides Na0.7MnO2.05 material was synthesized using Na2CO3 and Mn3O4 precursors via a solvothermal method at different temperatures. The X-ray diffraction (XRD) shows that the Na0.7MnO2.05 sample has a high crystallinity with hexagonal crystal system. The electrochemical performance was characterized by cyclic voltammetry (CV), impedance measurements and galvanostatic charge-discharge tests in symmetric Na-ion supercapacitors with 1 mol L-1 Na2SO4 solution as electrolyte. The Na0.7MnO2.05 material shows a high specific capacity of about 162.5 F g-1 at a current density of 50 mA g-1 and a high coulombic efficiency approaching 100%. Even at a current density of 200 mA g-1, the discharge capacity of the material can reach to 146 F g-1. This electrode material holds great promise for practical applications. |
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| Date de publication | 2015-12-17 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21277347 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 9c443a7e-d4e8-477e-b83d-cbfb216e16f6 |
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| Enregistrement créé | 2016-03-09 |
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| Enregistrement modifié | 2020-04-22 |
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