Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery
Non-aqueous organic redox flow batteries (NAORFBs) suffer from rapid capacity fading mainly due to the crossover of redox-active species across the membrane. Minimizing the crossover of redox-active species through ion exchange membranes remains a complex challenge in NAORFBs. To address the crossov...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-12-01
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| Series: | APL Energy |
| Online Access: | http://dx.doi.org/10.1063/5.0167853 |
| _version_ | 1797367093822226432 |
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| author | Sandeep Kumar Mohapatra Kothandaraman Ramanujam Sethuraman Sankararaman |
| author_facet | Sandeep Kumar Mohapatra Kothandaraman Ramanujam Sethuraman Sankararaman |
| author_sort | Sandeep Kumar Mohapatra |
| collection | DOAJ |
| description | Non-aqueous organic redox flow batteries (NAORFBs) suffer from rapid capacity fading mainly due to the crossover of redox-active species across the membrane. Minimizing the crossover of redox-active species through ion exchange membranes remains a complex challenge in NAORFBs. To address the crossover issue, we approached the problem through a molecular size exclusion principle designing a dimer of viologen derivative as an anode material. Coupled with N-hexyl phenothiazine as a catholyte, a static cell was demonstrated, which exhibits an excellent cycling stability (100 cycles) with an average Coulombic efficiency of 90% at 10 mA cm−2 current density. |
| first_indexed | 2024-03-08T17:13:23Z |
| format | Article |
| id | doaj.art-e8d6b7e2144b423a8557794edc20736e |
| institution | Directory Open Access Journal |
| issn | 2770-9000 |
| language | English |
| last_indexed | 2024-03-08T17:13:23Z |
| publishDate | 2023-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Energy |
| spelling | doaj.art-e8d6b7e2144b423a8557794edc20736e2024-01-03T19:49:25ZengAIP Publishing LLCAPL Energy2770-90002023-12-0113036103036103-810.1063/5.0167853Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow batterySandeep Kumar Mohapatra0Kothandaraman Ramanujam1Sethuraman Sankararaman2Clean Energy Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, IndiaAdvanced Centre for Energy Storage and Conversion-The Energy Consortium, Indian Institute of Technology Madras, Chennai 600036, IndiaClean Energy Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, IndiaNon-aqueous organic redox flow batteries (NAORFBs) suffer from rapid capacity fading mainly due to the crossover of redox-active species across the membrane. Minimizing the crossover of redox-active species through ion exchange membranes remains a complex challenge in NAORFBs. To address the crossover issue, we approached the problem through a molecular size exclusion principle designing a dimer of viologen derivative as an anode material. Coupled with N-hexyl phenothiazine as a catholyte, a static cell was demonstrated, which exhibits an excellent cycling stability (100 cycles) with an average Coulombic efficiency of 90% at 10 mA cm−2 current density.http://dx.doi.org/10.1063/5.0167853 |
| spellingShingle | Sandeep Kumar Mohapatra Kothandaraman Ramanujam Sethuraman Sankararaman Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery APL Energy |
| title | Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery |
| title_full | Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery |
| title_fullStr | Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery |
| title_full_unstemmed | Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery |
| title_short | Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery |
| title_sort | molecular size exclusion effect extending the cycling stability of a non aqueous redox flow battery |
| url | http://dx.doi.org/10.1063/5.0167853 |
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