Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage
High density charge (energy) storage under supercapacitive mode requires an electrode which would deliver larger space for charge accumulation and offer larger electrochemical potential difference at an electrode–electrolyte interface. Porous carbon has been a preferred electrode for commercial supe...
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| Format: | Article |
| Language: | English |
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American Chemical Society (ACS Publications)
2020
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| Online Access: | http://umpir.ump.edu.my/id/eprint/28500/2/Void%20Space%20Control%20in%20Porous%20Carbon%20for%20High-Density1.pdf |
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| author | Vijayan, Bincy Lathakumari Nurul Khairiyyah, Mohd Zain Izan Izwan, Misnon Reddy, M. Venkatashamy Adams, Stefan Yang, Chun-Chen Anilkumar, Gopinathan M. Rajan, Jose |
| author_facet | Vijayan, Bincy Lathakumari Nurul Khairiyyah, Mohd Zain Izan Izwan, Misnon Reddy, M. Venkatashamy Adams, Stefan Yang, Chun-Chen Anilkumar, Gopinathan M. Rajan, Jose |
| author_sort | Vijayan, Bincy Lathakumari |
| collection | UMP |
| description | High density charge (energy) storage under supercapacitive mode requires an electrode which would deliver larger space for charge accumulation and offer larger electrochemical potential difference at an electrode–electrolyte interface. Porous carbon has been a preferred electrode for commercial supercapacitors; however, the charge storability is much lower to the state-of-the-art charge storage devices such as lithium ion batteries. We show that one of the primary limiting factors is the voids in porous carbon, which do not contribute to the capacitance as their sizes are much larger than the size of the solvated/unsolvated ions in the electrolyte. We activate these voids by filling them with a flower-shaped 3D hierarchical pseudocapacitive material (MnCo2O4) by assuming that flower-shaped fillers would provide additional easily accessible surface for charge adsorption. Less than 10wt.% MnCo2O4 in these voids through a simple wet impregnation results in five-fold increase in charge storability of porous carbon from palm kernel shells. Laboratory prototypes of electrochemical double layer capacitors are fabricated using the void-filled-carbon electrodes, which show five-fold higher specific energy than that of pure carbon and are cycled over 5000 times with >95% capacitance retention. The present strategy of activating the voids by hierarchical 3D nanostructures could be applied to build high performance energy storage devices. |
| first_indexed | 2024-03-06T12:42:54Z |
| format | Article |
| id | UMPir28500 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:42:54Z |
| publishDate | 2020 |
| publisher | American Chemical Society (ACS Publications) |
| record_format | dspace |
| spelling | UMPir285002020-07-07T01:27:15Z http://umpir.ump.edu.my/id/eprint/28500/ Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage Vijayan, Bincy Lathakumari Nurul Khairiyyah, Mohd Zain Izan Izwan, Misnon Reddy, M. Venkatashamy Adams, Stefan Yang, Chun-Chen Anilkumar, Gopinathan M. Rajan, Jose QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering High density charge (energy) storage under supercapacitive mode requires an electrode which would deliver larger space for charge accumulation and offer larger electrochemical potential difference at an electrode–electrolyte interface. Porous carbon has been a preferred electrode for commercial supercapacitors; however, the charge storability is much lower to the state-of-the-art charge storage devices such as lithium ion batteries. We show that one of the primary limiting factors is the voids in porous carbon, which do not contribute to the capacitance as their sizes are much larger than the size of the solvated/unsolvated ions in the electrolyte. We activate these voids by filling them with a flower-shaped 3D hierarchical pseudocapacitive material (MnCo2O4) by assuming that flower-shaped fillers would provide additional easily accessible surface for charge adsorption. Less than 10wt.% MnCo2O4 in these voids through a simple wet impregnation results in five-fold increase in charge storability of porous carbon from palm kernel shells. Laboratory prototypes of electrochemical double layer capacitors are fabricated using the void-filled-carbon electrodes, which show five-fold higher specific energy than that of pure carbon and are cycled over 5000 times with >95% capacitance retention. The present strategy of activating the voids by hierarchical 3D nanostructures could be applied to build high performance energy storage devices. American Chemical Society (ACS Publications) 2020-01-01 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/28500/2/Void%20Space%20Control%20in%20Porous%20Carbon%20for%20High-Density1.pdf Vijayan, Bincy Lathakumari and Nurul Khairiyyah, Mohd Zain and Izan Izwan, Misnon and Reddy, M. Venkatashamy and Adams, Stefan and Yang, Chun-Chen and Anilkumar, Gopinathan M. and Rajan, Jose (2020) Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage. Energy & Fuels, 34. pp. 5072-5083. ISSN 0887-0624. (Published) https://dx.doi.org/10.1021/acs.energyfuels.0c00737 https://dx.doi.org/10.1021/acs.energyfuels.0c00737 |
| spellingShingle | QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering Vijayan, Bincy Lathakumari Nurul Khairiyyah, Mohd Zain Izan Izwan, Misnon Reddy, M. Venkatashamy Adams, Stefan Yang, Chun-Chen Anilkumar, Gopinathan M. Rajan, Jose Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage |
| title | Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage |
| title_full | Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage |
| title_fullStr | Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage |
| title_full_unstemmed | Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage |
| title_short | Void Space Control in Porous Carbon for High-Density Supercapacitive Charge Storage |
| title_sort | void space control in porous carbon for high density supercapacitive charge storage |
| topic | QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering |
| url | http://umpir.ump.edu.my/id/eprint/28500/2/Void%20Space%20Control%20in%20Porous%20Carbon%20for%20High-Density1.pdf |
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