| DOI | Resolve DOI: https://doi.org/10.1016/j.matchemphys.2015.12.009 |
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| Author | Search for: Hou, Yan; Search for: Tang, Hongwei; Search for: Li, Bao; Search for: Chang, Kun; Search for: Chang, Zhaorong; Search for: Yuan, Xiao-Zi1; Search for: Wang, Haijiang1 |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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| Format | Text, Article |
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| Subject | 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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| Abstract | 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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| Publication date | 2015-12-17 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21277347 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 9c443a7e-d4e8-477e-b83d-cbfb216e16f6 |
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| Record created | 2016-03-09 |
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| Record modified | 2020-04-22 |
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