Intercalating Graphite-Based Na-Ion Battery Anodes with Integrated Magnetite
Authors: Karunarathna, R., Ranasinghe Arachchige, H., Karunarathne, S., Wijesinghe, W.P.S.L., Sandaruwan, C., Mantilaka, M.M.M.P.G., Kannangara, Y.Y. and Abdelkader, A.M.
Journal: Small Science
eISSN: 2688-4046
DOI: 10.1002/smsc.202400405
Abstract:Graphite is known as the most successful anode material found for Li-ion batteries. However, unfortunately, graphite delivers an ordinary capacity as anode material for the next-generation Na-ion batteries (SIBs) due to difficulties in intercalating larger Na+ ions in between the layers of graphene due to incompatible d-spacing. The methodologies investigated in deriving suitable anode structures for SIBs are found to be either less effective, expensive, or rather too complex in most cases. Herein, a simple strategy is introduced to derive suitable anode materials for SIBs through a modified electrochemical exfoliation of graphite. The introduced exfoliation process is able to graft Fe3O4 (magnetite) on graphite allowing the structure to expand, supporting a swift intercalation and deintercalation of Na ions. The synthesized magnetite-functionalized graphene nanoplatelets are identified as a well-suited anode material for SIBs, with its efficient intercalation obtained through the expanded interlayer spacing of 3.9 Å and the surface redox pseudocapacitive activity attained through the surface-grafted magnetite. The effectiveness of the synthesized is reflected in the obtained high discharge capacitance of 420 mAh g−1, with 96% capacitive retention over 1000 cycles. The study opens new opportunities for prospective low-cost anode materials for energy storage applications.
https://eprints.bournemouth.ac.uk/40670/
Source: Scopus
Intercalating Graphite-Based Na-Ion Battery Anodes with Integrated Magnetite
Authors: Karunarathna, R., Arachchige, H.R., Karunarathne, S., Wijesinghe, W.P.S.L., Sandaruwan, C., Mantilaka, M.M.M.P.G., Kannangara, Y.Y. and Abdelkader, A.M.
Journal: SMALL SCIENCE
ISSN: 2688-4046
DOI: 10.1002/smsc.202400405
https://eprints.bournemouth.ac.uk/40670/
Source: Web of Science (Lite)
Intercalating Graphite-Based Na-Ion Battery Anodes with Integrated Magnetite
Authors: Karunarathna, R., Ranasinghe Arachchige, H., Karunarathne, S., Wijesinghe, W.P.S.L., Sandaruwan, C., Mantilaka, M.M.M.P.G., Kannangara, Y.Y. and Abdelkader, A.M.
Journal: Small Science
ISSN: 2688-4046
Abstract:Graphite is known as the most successful anode material found for Li-ion batteries. However, unfortunately, graphite delivers an ordinary capacity as anode material for the next-generation Na-ion batteries (SIBs) due to difficulties in intercalating larger Na+ ions in between the layers of graphene due to incompatible d-spacing. The methodologies investigated in deriving suitable anode structures for SIBs are found to be either less effective, expensive, or rather too complex in most cases. Herein, a simple strategy is introduced to derive suitable anode materials for SIBs through a modified electrochemical exfoliation of graphite. The introduced exfoliation process is able to graft Fe3O4 (magnetite) on graphite allowing the structure to expand, supporting a swift intercalation and deintercalation of Na ions. The synthesized magnetite-functionalized graphene nanoplatelets are identified as a well-suited anode material for SIBs, with its efficient intercalation obtained through the expanded interlayer spacing of 3.9 Å and the surface redox pseudocapacitive activity attained through the surface-grafted magnetite. The effectiveness of the synthesized is reflected in the obtained high discharge capacitance of 420 mAh g−1, with 96% capacitive retention over 1000 cycles. The study opens new opportunities for prospective low-cost anode materials for energy storage applications.
https://eprints.bournemouth.ac.uk/40670/
Source: BURO EPrints