| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Deonikar, Virendrakumar
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (1/1 displayed)
Places of action
| Organizations | Location | People |
|---|
article
Mimics of microstructures of Ni substituted Mn1-xNixCo2O4 for high energy density asymmetric capacitors
Abstract
The preparation of nanostructured hierarchical Mn<sub>1−x</sub>Ni<sub>x</sub>Co<sub>2</sub>O<sub>4</sub> metal oxides as efficient supercapacitors of different structures and configurations especially for the miniaturized electronics is still a challenge. In this context, we report template free facile hydrothermal synthesis of hierarchical nanostructured Mn<sub>1−x</sub>Ni<sub>x</sub>Co<sub>2</sub>O<sub>4</sub> with excellent supercapacitive performance. Significantly, the morphology of pure MnCo<sub>2</sub>O<sub>4</sub> transformed from 3D microcubes to 1D nanowires with incorporation of Ni. The electrochemical study shows highest specific capacitance i.e. 1762 F/g for Mn<sub>0.4</sub>Ni<sub>0.6</sub>Co<sub>2</sub>O<sub>4</sub> with high cycling stability of 89.2% which is much higher than pristine MnCo<sub>2</sub>O<sub>4</sub> and NiCo<sub>2</sub>O<sub>4</sub>. Later, asymmetric capacitor has been fabricated successfully using Mn<sub>0.4</sub>Ni<sub>0.6</sub>Co<sub>2</sub>O<sub>4</sub> nanowires as positive electrode and activated carbon (AC) as negative electrode in a KOH aqueous electrolyte. An asymmetric cell could be cycled reversibly in the high-voltage range of 0–1.5 V and displays intriguing performances with a specific capacitance of 112.8 F/g (6.87 F/cm<sup>3</sup>) and high energy density of 35.2 Wh/kg (2.1 mWh/cm<sup>3</sup>). Importantly, this asymmetric capacitor device exhibits an excellent long cycle life along with 83.2% specific capacitance retained after 2000 cycles.