Journal
NANO RESEARCH
Volume 10, Issue 1, Pages 121-133Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-016-1271-y
Keywords
Fe2O3-SnO2/graphene; point-line-plane structure; synergistic interaction; anode materials; lithium-ion batteries
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Funding
- National Natural Science Foundation of China [11275121, 21471096, 21371116]
- Program for Innovative Research Team in University [IRT13078]
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The assembly of hybrid nanomaterials has opened up a new direction for the construction of high-performance anodes for lithium-ion batteries (LIBs). In this work, we present a straightforward, eco-friendly, one-step hydrothermal protocol for the synthesis of a new type of Fe2O3-SnO2/graphene hybrid, in which zero-dimensional (0D) SnO2 nanoparticles with an average diameter of 8 nm and one-dimensional (1D) Fe2O3 nanorods with a length of similar to 150 nm are homogeneously attached onto two-dimensional (2D) reduced graphene oxide nanosheets, generating a unique point-line-plane (0D-1D-2D) architecture. The achieved Fe2O3-SnO2/graphene exhibits a well-defined morphology, a uniform size, and good monodispersity. As anode materials for LIBs, the hybrids exhibit a remarkable reversible capacity of 1,530 mA center dot g(-1) at a current density of 100 mA center dot g(-1) after 200 cycles, as well as a high rate capability of 615 mAh center dot g(-1) at 2,000 mA center dot g(-1). Detailed characterizations reveal that the superior lithium-storage capacity and good cycle stability of the hybrids arise from their peculiar hybrid nanostructure and conductive graphene matrix, as well as the synergistic interaction among the components.
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