Graphene and selected derivatives as negative electrodes in sodium- and lithium-ion batteries

Pramudita, JC; Pontiroli, D; Magnani, G; Gaboardi, M; Riccò, M; Milanese, C; Brand, HEA; Sharma, N

Graphene and selected derivatives as negative electrodes in sodium- and lithium-ion batteries

Date

2015-05-02

Authors

Publisher

John Wiley & Sons, Inc

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.

Keywords

Graphene, Electrodes, Electric batteries, Sodium ions, Lithium ions, Lithium ion batteries

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