Oxalate-assisted synthesis of MnCo2O4 nanoparticles on layered MXene (Ti3C2Tx) for supercapacitor application
The synthesis of MnCo2O4/Ti3C2Tx composite powders was achieved through a hydrothermal method facilitated by oxalate assistance. To assess the influence of MXene levels (0, 25, and 50 wt%) on microstructure, structure, and electrochemical performance, modern characterization methods were applied in...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Electrochemistry Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248125001341 |
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| Summary: | The synthesis of MnCo2O4/Ti3C2Tx composite powders was achieved through a hydrothermal method facilitated by oxalate assistance. To assess the influence of MXene levels (0, 25, and 50 wt%) on microstructure, structure, and electrochemical performance, modern characterization methods were applied in this study. The mixed manganese‑cobalt oxalates were precipitated on the layered MXene by adding a proper amount of oxalic acid to the Nitride solution. The MnCo2O4 nanoparticles were then crystallized by heat treatment at 450 °C for one hour in a nitrogen gas atmosphere. The pristine MnCo2O4 had a columnar-like morphology, which was transformed into a fine particulate microstructure by combining with MXene. These pristine MnCo2O4 powders indicated a higher specific capacitance of 1116 F g−1, significantly exceeding the 640.5 Fg−1 recorded for the pristine layered MXene. The Incorporation of 25 wt% layered MXene enhanced the specific capacitance to a remarkable 1500 Fg−1, attributed to its finer microstructure. Under a current rate of 1 Ag−1, the capacitor composed of MnCo₂O₄-25 wt% MXene//activated carbon achieved an energy density of 43.5 Wh kg−1 at a power density of 1411 W kg−1. |
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| ISSN: | 1388-2481 |