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Synthesis of unit-cell-thick α-Fe2O3 nanosheets and their transformation to γ-Fe2O3 nanosheets with enhanced LIB performances.
- Source :
-
Chemical Engineering Journal . Oct2017, Vol. 326, p292-297. 6p. - Publication Year :
- 2017
-
Abstract
- The synthesis of ultrathin magnetic nanosheets is significant for the development of next-generation nanodevices but remains to be a big challenge. Herein, we present facile approaches for large-scaled production of cell-unit-thick single-crystalline iron oxide nanostructures. The ultrathin hematite (α-Fe 2 O 3 ) nanosheets with unit-cell thickness of 1.3 nm are firstly synthesized using a metal-ion-intervened hydrothermal method. Then the α-Fe 2 O 3 nanosheets are converted to magnetic maghemite ( γ -Fe 2 O 3 ) nanosheets with unit-cell thickness of 0.8 nm by a simple calcination process. The Li-ion battery studies reveal that unit-cell-thick γ-Fe 2 O 3 nanosheets exhibit great enhanced electrochemical performances with high specific capacitance approaching to its theoretical value and excellent cycling stability. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HEMATITE
*MAGHEMITE
*ANODES
*LITHIUM-ion batteries
*CALCINATION (Heat treatment)
Subjects
Details
- Language :
- English
- ISSN :
- 13858947
- Volume :
- 326
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering Journal
- Publication Type :
- Academic Journal
- Accession number :
- 124113545
- Full Text :
- https://doi.org/10.1016/j.cej.2017.05.155