Jump to main content
Jump to site search

Issue 102, 2016
Previous Article Next Article

3D graphene–carbon nanotube–nickel ensembles as anodes in sodium-ion batteries

Author affiliations

Abstract

Sodium ion batteries (SIBs) are fast emerging as an attractive low-cost substitute in applications such as smart grids and large scale energy storage. But traditional carbon anodes used in SIBs face many practical difficulties due to the fact that the sodium ion is 55% larger than its lithium counterpart. Therefore, anodes in SIBs require special architectures to accommodate the large sodium ions without compromising other essential attributes like conductivity and surface area. In this manuscript, we report the synthesis of three dimensional, 3D mesoporous, N-doped graphene–carbon nanotube (G–Ni@NCNT) networks as anodes in SIBs. The graphene–carbon nanotube–nickel ensemble was synthesized by facile catalytic transformation of isocyanate treated graphene oxide under microwave irradiation. When applied as electrodes in sodium-ion batteries, our 3D graphene–carbon nanotube hybrids show a high specific capacitance of 447 mA h g−1, good rate capability and still retain 98.4% of the initial capacitance even after 150 cycles. The carbon nanotubes anchored on the graphene surface act as spacers and increase the electrolyte-accessible surface area whereas the defects generated by substitution doping of nitrogen on graphene and CNT provide good anchoring points for sodium ion retention.

Graphical abstract: 3D graphene–carbon nanotube–nickel ensembles as anodes in sodium-ion batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 Jun 2016, accepted on 10 Oct 2016 and first published on 11 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA15069A
Citation: RSC Adv., 2016,6, 99914-99918
  •   Request permissions

    3D graphene–carbon nanotube–nickel ensembles as anodes in sodium-ion batteries

    D. Gangaraju, S. Vadahanambi and H. Park, RSC Adv., 2016, 6, 99914
    DOI: 10.1039/C6RA15069A

Search articles by author

Spotlight

Advertisements