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| DOI | 10.1016/J.EST.2024.112910 | ||||
| Año | 2024 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
This study presents the evaluation of direct deposited nickel-cobalt layered double hydroxide and reduced graphene oxide (Ni center dot Co LDH/rGO) nanocomposite on nickel foam via a single-step hydrothermal method as a binder-free electrode for supercapacitors. The synthesized materials underwent structural and morphological analysis using various techniques, revealing thin nanosheets of Ni center dot Co LDH grown on rGO sheets, resembling a honeycomb-like structure. The incorporation of electrically conductive rGO increased the surface area and electrical conductivity, and facilitated the direct deposition of the material, ensuring strong adhesion between the active mass and the current collector (Ni foam), which in turn further reduced internal resistance. The electrochemical performance was measured using cyclic voltammetry and galvanostatic charge-discharge methods. A maximum specific capacitance of 2702 Fg(-1) was obtained for Ni center dot Co LDH/rGO at a current density of 0.25 Ag-1 which is far higher than bare Ni center dot Co LDH. The rate capability and cyclic performance were further analysed and observed a 98 % capacitance retention even after 5000 cycles. The asymmetric supercapacitor Ni center dot Co LDH/rGO/AC fabricated shown an excellent electrochemical performance with energy density of 48.55 Whkg(-1) and power density of 200 Wkg(-1) along with excellent cyclic stability and rate capability.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Lokhande, P. E. | - |
Universidad Tecnológica Metropolitana - Chile
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| 2 | Jagtap, Chaitali | - |
Savitribai Phule Pune Univ - India
Savitribai Phule Pune University - India |
| 3 | Kadam, Vishal | - |
Savitribai Phule Pune Univ - India
Savitribai Phule Pune University - India |
| 4 | Udayabhaskar, R. | - |
Universidad Tecnológica Metropolitana - Chile
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| 5 | Shaikh, Shoyebmohamad F. | - |
King Saud Univ - Arabia Saudí
College of Sciences - Arabia Saudí |
| 6 | Ali, Raisuddin | - |
King Saud Univ - Arabia Saudí
College of Pharmacy - Arabia Saudí |
| 7 | Pathan, Habib M. | - |
Savitribai Phule Pune Univ - India
Savitribai Phule Pune University - India |
| Fuente |
|---|
| FONDECYT |
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| Universidad Tecnológica Metropolitana |
| King Saud University |
| King Saud University, Riyadh, Saudi Arabia |
| ANID, Chile |
| Agradecimiento |
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| The authors appreciate the Researchers Supporting Project number (RSPD2024R1097) , King Saud University, Riyadh, Saudi Arabia. The authors P. E. Lokhande are grateful to the FONDECYT (Project Number 3230388) . The author R.U acknowledges ANID, CHILE for the project FONDECYT#11220335 and "FESEM-Proyecto UTM199", UTEM, Santiago, CHILE for characterization support. |
| The authors appreciate the Researchers Supporting Project number (RSPD2024R1097), King Saud University, Riyadh, Saudi Arabia. The authors P. E. Lokhande are grateful to the FONDECYT (Project Number 3230388). The author R.U acknowledges ANID, CHILE for the project FONDECYT#11220335 and \"FESEM-Proyecto UTM199\", UTEM, Santiago, CHILE for characterization support. |