Effect of vinylene carbonate as electrolyte additive for Mn2O3/NiMnO3 anodes of lithium-ion batteries
| Autor: | Reyhan Solmaz, B. Deniz Karahan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Electrolyte Vinylene Carbonate 010402 general chemistry Electrochemistry 01 natural sciences Hydrothermal circulation General Materials Science General Engineering SEI Layer 021001 nanoscience & nanotechnology 0104 chemical sciences Dielectric spectroscopy Anode Negative Electrode chemistry Chemical engineering Lithium-Ion Battery Electrode Lithium Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Ionics. 27:2813-2824 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-021-04044-7 |
| Popis: | This study reports for the first time the production and characterization of Mn2O3/NiMnO3 (MO/NMO) powders by the hydrothermal method and the enhanced performance of this electrode upon the addition of 15 vol% vinylene carbonate (VC) into the electrolyte. Cyclic voltammetry and electrochemical impedance spectroscopy tests show that the lithiation mechanism of MO/NMO changes upon the presence of VC in the electrolyte. The galvanostatic tests' results reveal that when half-cells have been tested with 15 vol% VC-containing electrolyte the anode delivers higher discharge capacity (793 mAh g(-1) at 100 mA g(-1), 535 mAh g(-1) at 400 mA g(-1)) and capacity retention, in comparison to that of the standard electrolyte. Finally, XRD and post-SEM analyses' outcomes substantiate that the addition of VC into the standard electrolyte promotes the formation of a stable electrode/electrolyte interface. The improved solid electrolyte interface (SEI) properties caused by VC addition prevent any peel off and/or delamination, resulting in high electrochemical performance over cycles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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