Back to Search
Start Over
The α-Fe 2 O 3 /graphite anode composites with enhanced electrochemical performance for lithium-ion batteries.
- Source :
-
Nanotechnology [Nanotechnology] 2020 Oct 23; Vol. 31 (43), pp. 435404. Date of Electronic Publication: 2020 Jul 07. - Publication Year :
- 2020
-
Abstract
- The α-Fe <subscript>2</subscript> O <subscript>3</subscript> /graphite composites were prepared by a thermal decomposition method using the expanded graphite as the matrix. The α-Fe <subscript>2</subscript> O <subscript>3</subscript> nanoparticles with the size of 15-30 nm were embedded into interlayers of graphite, forming a laminated porous nanostructure with a main pore distribution from 2 to 20 nm and the Brunauer-Emmett-Teller surface area of 33.54 m <superscript>2</superscript> g <superscript>-1</superscript> . The porous structure constructed by the graphite sheets can alleviate the adverse effects caused by the huge volume change of the α-Fe <subscript>2</subscript> O <subscript>3</subscript> grains during the charge/discharge process. The composite electrode exhibits a high reversible capacity of 1588 mAh g <superscript>-1</superscript> after 100 cycles at 100 mA g <superscript>-1</superscript> , 702 mAh g <superscript>-1</superscript> at 5 A g <superscript>-1</superscript> , 460 mAh g <superscript>-1</superscript> at 10 A g <superscript>-1</superscript> after 160 cycles, respectively, showing good cycle stability and outstanding rate capability at high current densities.
Details
- Language :
- English
- ISSN :
- 1361-6528
- Volume :
- 31
- Issue :
- 43
- Database :
- MEDLINE
- Journal :
- Nanotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 32634792
- Full Text :
- https://doi.org/10.1088/1361-6528/aba3a0