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In situ preparation of Fe 3 O 4 in a carbon hybrid of graphene nanoscrolls and carbon nanotubes as high performance anode material for lithium-ion batteries.
- Source :
-
Nanotechnology [Nanotechnology] 2017 Nov 17; Vol. 28 (46), pp. 465401. Date of Electronic Publication: 2017 Oct 23. - Publication Year :
- 2017
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Abstract
- A new conductive carbon hybrid combining both reduced graphene nanoscrolls and carbon nanotubes (rGNSs-CNTs) is prepared, and used to host Fe <subscript>3</subscript> O <subscript>4</subscript> nanoparticles through an in situ synthesis method. As an anode material for LIBs, the obtained Fe <subscript>3</subscript> O <subscript>4</subscript> @rGNSs-CNTs shows good electrochemical performance. At a current density of 0.1 A g <superscript>-1</superscript> , the anode material shows a high reversible capacity of 1232.9 mAh g <superscript>-1</superscript> after 100 cycles. Even at a current density of 1 A g <superscript>-1</superscript> , it still achieves a high reversible capacity of 812.3 mAh g <superscript>-1</superscript> after 200 cycles. Comparing with bare Fe <subscript>3</subscript> O <subscript>4</subscript> and Fe <subscript>3</subscript> O <subscript>4</subscript> /rGO composite anode materials without nanoscroll structure, Fe <subscript>3</subscript> O <subscript>4</subscript> @rGNSs-CNTs shows much better rate capability with a reversible capacity of 605.0 and 500.0 mAh g <superscript>-1</superscript> at 3 and 5 A g <superscript>-1</superscript> , respectively. The excellent electrochemical performance of the Fe <subscript>3</subscript> O <subscript>4</subscript> @rGNSs-CNTs anode material can be ascribed to the hybrid structure of rGNSs-CNTs, and their strong interaction with Fe <subscript>3</subscript> O <subscript>4</subscript> nanoparticles, which on one hand provides more pathways for lithium ions and electrons, on the other hand effectively relieves the volume change of Fe <subscript>3</subscript> O <subscript>4</subscript> during the charge-discharge process.
Details
- Language :
- English
- ISSN :
- 1361-6528
- Volume :
- 28
- Issue :
- 46
- Database :
- MEDLINE
- Journal :
- Nanotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 29063865
- Full Text :
- https://doi.org/10.1088/1361-6528/aa8dae