In:
Journal of Materials Research, Springer Science and Business Media LLC, Vol. 30, No. 6 ( 2015-03-28), p. 761-769
Abstract:
We demonstrate in this paper the shape-controlled synthesis of α-Fe 2 O 3 rhombohedra anchored graphene nanocomposites through a simple hydrothermal strategy by adopting inorganic species in the synthesis system. TEM investigations reveal that the rhombohedra with an average diameter of 80 nm is formed through oriented attachment of primary nanocrystals assisted by Ostwald ripening, and CH 3 COONa inorganic surfactant played an important role in control over the final morphology of the products. As high-performance anodes for lithium-ion batteries, the obtained Fe 2 O 3 rhombohedra/graphene composite exhibits the first reversible capacity of 905.3 mAh g −1 , and high capacity retention of 85.7% after 50 cycles. These values are much higher than those of bare Fe 2 O 3 and Fe 2 O 3 particle/graphene composites, indicating its excellent electrochemical stability. These results give us a guideline for the study of the morphology-dependent properties of functional oxide materials as well as further applications for magnetic materials, lithium-ion batteries, and gas sensors.
Type of Medium:
Online Resource
ISSN:
0884-2914
,
2044-5326
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2015
detail.hit.zdb_id:
54876-5
detail.hit.zdb_id:
2015297-8
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