Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study
The structural and electrochemical properties of manganese oxide (MnO2) electrodeposited by potentiostatic and galvanostatic conditions are studied. X‒ray diffraction analyses confirm identical MnO2 phase (ramsdellite) are deposited under potentiostatic and galvanostatic conditions. Under comparable...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2015
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| Online Access: | http://umpir.ump.edu.my/id/eprint/9544/7/Potentiostatic%20and%20galvanostatic%20electrodeposition%20of%20manganese%20oxide%20for%20supercapacitor%20application.pdf |
| _version_ | 1796990634412736512 |
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| author | Ali, Gomaa A. M. M. M., Yusoff Yun, Hau Ng Hong, Ngee Lim K. F., Chong |
| author_facet | Ali, Gomaa A. M. M. M., Yusoff Yun, Hau Ng Hong, Ngee Lim K. F., Chong |
| author_sort | Ali, Gomaa A. M. |
| collection | UMP |
| description | The structural and electrochemical properties of manganese oxide (MnO2) electrodeposited by potentiostatic and galvanostatic conditions are studied. X‒ray diffraction analyses confirm identical MnO2 phase (ramsdellite) are deposited under potentiostatic and galvanostatic conditions. Under comparable current density during electrodeposition, MnO2 deposited by galvanostatic condition shows smaller crystallite size, less compact layered structure, higher surface area and wider band gap, in comparison to the potentiostatic deposition. The MnO2 morphology difference under different electrodeposition conditions contributes to different capacitive behaviors. The lower compactness of MnO2 deposited galvanostatically renders facile ions diffusion, leading to higher specific capacitance with low equivalent series resistance. The findings suggest galvanostatic electrodeposition is suitable to produce MnO2 nanostructure for supercapacitor application. |
| first_indexed | 2024-03-06T11:54:28Z |
| format | Article |
| id | UMPir9544 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:54:28Z |
| publishDate | 2015 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir95442018-07-26T03:32:42Z http://umpir.ump.edu.my/id/eprint/9544/ Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study Ali, Gomaa A. M. M. M., Yusoff Yun, Hau Ng Hong, Ngee Lim K. F., Chong Q Science (General) The structural and electrochemical properties of manganese oxide (MnO2) electrodeposited by potentiostatic and galvanostatic conditions are studied. X‒ray diffraction analyses confirm identical MnO2 phase (ramsdellite) are deposited under potentiostatic and galvanostatic conditions. Under comparable current density during electrodeposition, MnO2 deposited by galvanostatic condition shows smaller crystallite size, less compact layered structure, higher surface area and wider band gap, in comparison to the potentiostatic deposition. The MnO2 morphology difference under different electrodeposition conditions contributes to different capacitive behaviors. The lower compactness of MnO2 deposited galvanostatically renders facile ions diffusion, leading to higher specific capacitance with low equivalent series resistance. The findings suggest galvanostatic electrodeposition is suitable to produce MnO2 nanostructure for supercapacitor application. Elsevier Ltd 2015 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/9544/7/Potentiostatic%20and%20galvanostatic%20electrodeposition%20of%20manganese%20oxide%20for%20supercapacitor%20application.pdf Ali, Gomaa A. M. and M. M., Yusoff and Yun, Hau Ng and Hong, Ngee Lim and K. F., Chong (2015) Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study. Current Applied Physics, 15 (10). pp. 1143-1147. ISSN 1567-1739. (Published) http://dx.doi.org/10.1016/j.cap.2015.06.022 doi: 10.1016/j.cap.2015.06.022 |
| spellingShingle | Q Science (General) Ali, Gomaa A. M. M. M., Yusoff Yun, Hau Ng Hong, Ngee Lim K. F., Chong Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study |
| title | Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study |
| title_full | Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study |
| title_fullStr | Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study |
| title_full_unstemmed | Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study |
| title_short | Potentiostatic and Galvanostatic Electrodeposition of Manganese Oxide for Supercapacitor Application: A Comparison Study |
| title_sort | potentiostatic and galvanostatic electrodeposition of manganese oxide for supercapacitor application a comparison study |
| topic | Q Science (General) |
| url | http://umpir.ump.edu.my/id/eprint/9544/7/Potentiostatic%20and%20galvanostatic%20electrodeposition%20of%20manganese%20oxide%20for%20supercapacitor%20application.pdf |
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