Please use this identifier to cite or link to this item:
https://doi.org/10.1039/d0ra05494a
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dc.title | MOF-derived manganese oxide/carbon nanocomposites with raised capacitance for stable asymmetric supercapacitor | |
dc.contributor.author | Wang, B.R. | |
dc.contributor.author | Hu, Y. | |
dc.contributor.author | Pan, Z. | |
dc.contributor.author | Wang, J. | |
dc.date.accessioned | 2021-08-18T02:51:38Z | |
dc.date.available | 2021-08-18T02:51:38Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Wang, B.R., Hu, Y., Pan, Z., Wang, J. (2020). MOF-derived manganese oxide/carbon nanocomposites with raised capacitance for stable asymmetric supercapacitor. RSC Advances 10 (57) : 34403-34412. ScholarBank@NUS Repository. https://doi.org/10.1039/d0ra05494a | |
dc.identifier.issn | 20462069 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/197477 | |
dc.description.abstract | Owing to immense application potentials in electrochemical energy storages, metal organic framework (MOF)-derived metal oxide/carbon nanocomposites have attracted extensive interest of research. Although thermolysis has been widely employed to convert MOFs into various active materials, a large set ofin situchanges in chemical composition, phase(s) and morphology requires delicate control over heating parameters. Through an innovative two-stage process, Mn-MIL-100 is first transformed into MnO@C by annealing at 700 °C under N2flow, which is then transformed into Mn3O4@C at 200 °C in air, while retaining a high surface area. The appropriate retention of carbon content for Mn3O4@C can also be easily obtained with the control of heating time. In contrast, thermolysis of MnO@C at higher temperatures gives rise to manganese oxides with negligible carbon content and a greatly reduced surface area. The optimized Mn3O4@C-2 h, derived from MnO@C at 200 °C for 2 hours, showed the highest capacitance, far exceeding that of MnO@C and other derivatives. When combined with graphene oxide (GO) nanosheets to form a flexible Mn3O4@C/rGO paper electrode, it demonstrated a capacitance of 328.4 F cm?3. The Mn3O4@C/rGO-based asymmetric supercapacitor thus assembled also shows favorable performance. The present work demonstrates the excellent controllability afforded by the innovative two-stage thermolysis in optimizing the electrochemical performance of MOF-derived active materials as electrode materials in supercapacitors. © The Royal Society of Chemistry 2020. | |
dc.publisher | Royal Society of Chemistry | |
dc.rights | Attribution-NonCommercial 4.0 International | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | |
dc.source | Scopus OA2020 | |
dc.type | Article | |
dc.contributor.department | MATERIALS SCIENCE AND ENGINEERING | |
dc.description.doi | 10.1039/d0ra05494a | |
dc.description.sourcetitle | RSC Advances | |
dc.description.volume | 10 | |
dc.description.issue | 57 | |
dc.description.page | 34403-34412 | |
Appears in Collections: | Staff Publications Elements |
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