Design and fabrication of bimetallic oxide nanonest-like structure/carbon cloth composite electrode for supercapacitors
| Autor: | Shakeel Akram, Mohamed Ouladsmane, Abdul Jabbar Khan, Aboud Ahmed Awadh Bahajjaj, Sajid Hussain Siyal, M. Alfakeer, Awais Ahmad, Guowei Zhao, Muhammad Sufyan Javed |
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| Rok vydání: | 2021 |
| Předmět: |
Supercapacitor
Materials science Process Chemistry and Technology Capacitive sensing Electrolyte Electrochemistry Capacitance Energy storage Surfaces Coatings and Films Electronic Optical and Magnetic Materials Chemical engineering Electrode Materials Chemistry Ceramics and Composites Faraday efficiency |
| Zdroj: | Ceramics International. 47:30747-30755 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2021.07.254 |
| Popis: | It's crucial to fabricate commercial-level electrodes with high mass loading of active materials for supercapacitors (SCs) to address the growing need for commercial-level flexible energy storage devices. In this work, we reported the direct growth of ZnCo2O4 nanonest-like structure composed of nanowires with high mass loading (5 mg cm−2) on the substrate of carbon cloth (CC, hereafter denoted as ZnCo2O4@CC) via a simple hydrothermal method. The ZnCo2O4@CC electrode was characterized by a variety of techniques including SEM/TEM, XRD/XPS, and BET/BJH. The ZnCo2O4@CC electrode possesses a holey characteristic with various electroactive sites for the utilization of electrolyte and delivered high specific capacitance of 1467 (1320 C g-1) Fg−1 at 1.2 Ag-1 with outstanding cycling retention of 95% at 12 Ag-1 and high Coulombic efficiency after 10,000 cycles. In addition, we employed power's law to explore the charge storage kinetics of ZnCo2O4@CC electrode to investigate the capacitive and diffusion-controlled charge storage quantification. The ZnCo2O4@CC electrode displayed high capacitive storage properties (42% capacitive at 15 mVs−1). Thus, the admirable electrochemical performance of the ZnCo2O4 electrode highlights the potential application in supercapacitors for future endowers. |
| Databáze: | OpenAIRE |
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