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Title: Graphene and selected derivatives as negative electrodes in sodium- and lithium-ion batteries
Authors: Pramudita, JC
Pontiroli, D
Magnani, G
Gaboardi, M
Riccò, M
Milanese, C
Brand, HEA
Sharma, N
Keywords: Graphene
Electric batteries
Sodium ions
Lithium ions
Lithium ion batteries
Issue Date: 2-May-2015
Publisher: John Wiley & Sons, Inc
Citation: Pramudita, J. C., Pontiroli, D., Magnani, G., Gaboardi, M., Riccò, M., Milanese, C., Brand, H. E. A. & Sharma, N. (2015). Graphene and selected derivatives as negative electrodes in sodium‐and lithium‐ion batteries. ChemElectroChem, 2(4), 600-610. doi:10.1002/celc.201402352
Abstract: The performance of graphene, and a few selected derivatives, was investigated as a negative electrode material in sodium- and lithium-ion batteries. Hydrogenated graphene shows significant improvement in battery performance compared with as-prepared graphene, with reversible capacities of 488 mA h g−1 for lithium-ion batteries after 50 cycles and 491 mA h g−1 for sodium-ion batteries after 20 cycles. Notably, high rates of 1 A g−1 for graphene and 5 A g−1 for hydrogenated graphene indicate higher capacities in sodium-ion batteries than in lithium-ion batteries. Alternatively, nickel-nanoparticle-decorated graphene performed relatively poorly in lithium-ion batteries. However, in sodium-ion batteries they showed the highest reversible capacities of all studied batteries and graphene derivatives, with 826 mA h g−1 after 25 cycles with ≈97 % coulombic efficiency. Overall, minor modifications to graphene can dramatically improve electrochemical performance in both lithium-ion and sodium-ion batteries. © 2015 Wiley-VCH Verlag GmbH & Co.
ISSN: 2196-0216
Appears in Collections:Journal Articles

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