Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode
Manganese cobaltite (MnCo2O4) is currently under screening as a high performance supercapacitor electrode owing to its high theoretical capacitance, improved electrical conductivity and long term cyclic stability. Herein, we report synthesis of MnCo2O4 cuboidal microcrystals using hydrothermal metho...
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| Format: | Article |
| Language: | English English |
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Elsevier Ltd
2016
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| Online Access: | http://umpir.ump.edu.my/id/eprint/11135/1/Synthesis%20and%20Characterization%20of%20MnCo2O4%20Cuboidal%20Microcrystals%20as%20a%20High%20Performance%20Psuedocapacitor%20Electrode.pdf http://umpir.ump.edu.my/id/eprint/11135/7/Synthesis%20and%20Characterization%20of%20MnCo2O4%20Cuboidal%20Microcrystals%20as%20a%20High%20Performance%20Psuedocapacitor%20Electrode.pdf |
| _version_ | 1796990931114655744 |
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| author | Krishnan, Syam G. Mohd Hasbi, Ab. Rahim Rajan, Jose |
| author_facet | Krishnan, Syam G. Mohd Hasbi, Ab. Rahim Rajan, Jose |
| author_sort | Krishnan, Syam G. |
| collection | UMP |
| description | Manganese cobaltite (MnCo2O4) is currently under screening as a high performance supercapacitor electrode owing to its high theoretical capacitance, improved electrical conductivity and long term cyclic stability. Herein, we report synthesis of MnCo2O4 cuboidal microcrystals using hydrothermal method and compare its performance with its flakes prepared by solid combustion process. Crystal structure, surface properties, and electrochemical properties of the flakes are studied using X-ray diffraction, gas adsorption, field emission scanning electron microscopy, cyclic voltammetry, galvanostatic charge–discharge cycling, and electrochemical impedance spectroscopy. The electrochemical properties of MnCo2O4 flakes synthesized using hydrothermal synthesis are superior to that synthesized using the solid combustion process. Electrochemical properties of the cuboidal microcrystals (∼specific capacitance, CS ∼600 F g−1 @ 0.5 A g−1) are superior to those synthesized by the combustion process (CS ∼128 F g−1) due to improved faradic utilization of active surface area, layered cuboidal morphology, faster OH− ion penetration owing to higher diffusion coefficient, and larger voltage range available for electrochemical reaction. |
| first_indexed | 2024-03-06T11:58:49Z |
| format | Article |
| id | UMPir11135 |
| institution | Universiti Malaysia Pahang |
| language | English English |
| last_indexed | 2024-03-06T11:58:49Z |
| publishDate | 2016 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir111352018-11-22T07:50:41Z http://umpir.ump.edu.my/id/eprint/11135/ Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode Krishnan, Syam G. Mohd Hasbi, Ab. Rahim Rajan, Jose Q Science (General) Manganese cobaltite (MnCo2O4) is currently under screening as a high performance supercapacitor electrode owing to its high theoretical capacitance, improved electrical conductivity and long term cyclic stability. Herein, we report synthesis of MnCo2O4 cuboidal microcrystals using hydrothermal method and compare its performance with its flakes prepared by solid combustion process. Crystal structure, surface properties, and electrochemical properties of the flakes are studied using X-ray diffraction, gas adsorption, field emission scanning electron microscopy, cyclic voltammetry, galvanostatic charge–discharge cycling, and electrochemical impedance spectroscopy. The electrochemical properties of MnCo2O4 flakes synthesized using hydrothermal synthesis are superior to that synthesized using the solid combustion process. Electrochemical properties of the cuboidal microcrystals (∼specific capacitance, CS ∼600 F g−1 @ 0.5 A g−1) are superior to those synthesized by the combustion process (CS ∼128 F g−1) due to improved faradic utilization of active surface area, layered cuboidal morphology, faster OH− ion penetration owing to higher diffusion coefficient, and larger voltage range available for electrochemical reaction. Elsevier Ltd 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/11135/1/Synthesis%20and%20Characterization%20of%20MnCo2O4%20Cuboidal%20Microcrystals%20as%20a%20High%20Performance%20Psuedocapacitor%20Electrode.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/11135/7/Synthesis%20and%20Characterization%20of%20MnCo2O4%20Cuboidal%20Microcrystals%20as%20a%20High%20Performance%20Psuedocapacitor%20Electrode.pdf Krishnan, Syam G. and Mohd Hasbi, Ab. Rahim and Rajan, Jose (2016) Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode. Journal of Alloys and Compounds, 656. pp. 707-713. ISSN 0925-8388 (print), 1873-4669 (online). (Published) http://dx.doi.org/10.1016/j.jallcom.2015.10.007 DOI: 10.1016/j.jallcom.2015.10.007 |
| spellingShingle | Q Science (General) Krishnan, Syam G. Mohd Hasbi, Ab. Rahim Rajan, Jose Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode |
| title | Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode |
| title_full | Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode |
| title_fullStr | Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode |
| title_full_unstemmed | Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode |
| title_short | Synthesis and Characterization of MnCo2O4 Cuboidal Microcrystals as a High Performance Psuedocapacitor Electrode |
| title_sort | synthesis and characterization of mnco2o4 cuboidal microcrystals as a high performance psuedocapacitor electrode |
| topic | Q Science (General) |
| url | http://umpir.ump.edu.my/id/eprint/11135/1/Synthesis%20and%20Characterization%20of%20MnCo2O4%20Cuboidal%20Microcrystals%20as%20a%20High%20Performance%20Psuedocapacitor%20Electrode.pdf http://umpir.ump.edu.my/id/eprint/11135/7/Synthesis%20and%20Characterization%20of%20MnCo2O4%20Cuboidal%20Microcrystals%20as%20a%20High%20Performance%20Psuedocapacitor%20Electrode.pdf |
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