Physical reduction of graphene oxide for supercapacitive charge storage
The oxygen-containing functional groups in graphene oxide (GO) impose considerable limitations in their applications requiring chemical inertness and electrical conductivity such as supercapacitive charge storage. Chemical reduction of GO has been frequently employed; however, processing of large vo...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2020
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| Online Access: | http://umpir.ump.edu.my/id/eprint/27759/ http://umpir.ump.edu.my/id/eprint/27759/1/Physical%20reduction%20of%20graphene%20oxide%20for%20supercapacitive%20charge%20storage.pdf |
| _version_ | 1848822876762800128 |
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| author | Yar, Asfand Dennis, John Ojur Mohamed Saheed, Mohamed Shuaib Norani, Muti Mohamed Irshad, Muhammad Imran Mumtaz, Asad Rajan, Jose |
| author_facet | Yar, Asfand Dennis, John Ojur Mohamed Saheed, Mohamed Shuaib Norani, Muti Mohamed Irshad, Muhammad Imran Mumtaz, Asad Rajan, Jose |
| author_sort | Yar, Asfand |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The oxygen-containing functional groups in graphene oxide (GO) impose considerable limitations in their applications requiring chemical inertness and electrical conductivity such as supercapacitive charge storage. Chemical reduction of GO has been frequently employed; however, processing of large volume of hazardous solvents impose severe environmental concerns. This article demonstrates the optical reduction of freeze dried GO into reduced GO (rGO) by a computer controlled laser engraver as a plug and operate device. The conversion of GO into rGO as a function of laser powers has been monitored by X-ray diffraction, X-ray photon electron spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, Thermogravimetric analysis, and field emission scanning microscopy. The rGO thus produced has been evaluated for their charge storage capability in aqueous electrolytes. The best performing laboratory prototype demonstrated one of the best energy density of rGO electrodes in an aqueous electrolyte. The promising properties of the supercapacitors thereby developed as well as cost effectiveness and potential for large scale production engaging laser engraving process, the present work offers numerous potentials for deploying efficient and low cost supercapacitive devices. |
| first_indexed | 2025-11-15T02:48:13Z |
| format | Article |
| id | ump-27759 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:48:13Z |
| publishDate | 2020 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-277592020-12-23T02:41:08Z http://umpir.ump.edu.my/id/eprint/27759/ Physical reduction of graphene oxide for supercapacitive charge storage Yar, Asfand Dennis, John Ojur Mohamed Saheed, Mohamed Shuaib Norani, Muti Mohamed Irshad, Muhammad Imran Mumtaz, Asad Rajan, Jose TP Chemical technology The oxygen-containing functional groups in graphene oxide (GO) impose considerable limitations in their applications requiring chemical inertness and electrical conductivity such as supercapacitive charge storage. Chemical reduction of GO has been frequently employed; however, processing of large volume of hazardous solvents impose severe environmental concerns. This article demonstrates the optical reduction of freeze dried GO into reduced GO (rGO) by a computer controlled laser engraver as a plug and operate device. The conversion of GO into rGO as a function of laser powers has been monitored by X-ray diffraction, X-ray photon electron spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, Thermogravimetric analysis, and field emission scanning microscopy. The rGO thus produced has been evaluated for their charge storage capability in aqueous electrolytes. The best performing laboratory prototype demonstrated one of the best energy density of rGO electrodes in an aqueous electrolyte. The promising properties of the supercapacitors thereby developed as well as cost effectiveness and potential for large scale production engaging laser engraving process, the present work offers numerous potentials for deploying efficient and low cost supercapacitive devices. Elsevier Ltd 2020-01-02 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/27759/1/Physical%20reduction%20of%20graphene%20oxide%20for%20supercapacitive%20charge%20storage.pdf Yar, Asfand and Dennis, John Ojur and Mohamed Saheed, Mohamed Shuaib and Norani, Muti Mohamed and Irshad, Muhammad Imran and Mumtaz, Asad and Rajan, Jose (2020) Physical reduction of graphene oxide for supercapacitive charge storage. Journal of Alloys and Compounds, 822 (153636). pp. 1-7. ISSN 0925-8388 (print), 1873-4669 (online). (Published) https://doi.org/10.1016/j.jallcom.2019.153636 https://doi.org/10.1016/j.jallcom.2019.153636 |
| spellingShingle | TP Chemical technology Yar, Asfand Dennis, John Ojur Mohamed Saheed, Mohamed Shuaib Norani, Muti Mohamed Irshad, Muhammad Imran Mumtaz, Asad Rajan, Jose Physical reduction of graphene oxide for supercapacitive charge storage |
| title | Physical reduction of graphene oxide for supercapacitive charge storage |
| title_full | Physical reduction of graphene oxide for supercapacitive charge storage |
| title_fullStr | Physical reduction of graphene oxide for supercapacitive charge storage |
| title_full_unstemmed | Physical reduction of graphene oxide for supercapacitive charge storage |
| title_short | Physical reduction of graphene oxide for supercapacitive charge storage |
| title_sort | physical reduction of graphene oxide for supercapacitive charge storage |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/27759/ http://umpir.ump.edu.my/id/eprint/27759/ http://umpir.ump.edu.my/id/eprint/27759/ http://umpir.ump.edu.my/id/eprint/27759/1/Physical%20reduction%20of%20graphene%20oxide%20for%20supercapacitive%20charge%20storage.pdf |