Journal
POWDER TECHNOLOGY
Volume 323, Issue -, Pages 424-432Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2017.10.028
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Funding
- National Natural Science Foundation of China [21603040]
- Guangxi Natural Science Foundation [2016GXNSFDA380034, 2016GXNSFBA380062]
- China Postdoctoral Science Foundation [2017M612859]
- Guangxi Postdoctoral Special Foundation
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Rational design and efficient synthesis method for electrode materials with improved functional morphologies are highly sought after in the development of rechargeable batteries. Herein, hierarchical fern leaf-like nanocomposites of alpha-Fe2O3@C connected by reduced graphene oxide (rGO), to form alpha-Fe2O3@C/rGO, have been prepared through a one-pot self-templated solvothermal method from ferrocene. A reasonable self-assembly process of the unique nanostructure is also proposed. During the in-situ formation, rGO content has a direct impact on the size of the fern leaf-like architectures, and also improves the electronic conductivity between adjacent fern leaf-like architectures. When used as anode materials for lithium-ion.batteries, alpha-Fe2O3@C/rGO nanocomposite exhibits excellent cycling performance at 200 mA g(-1), maintaining a discharge capacity of 971 mAh g(-1), after 100 cycles. Furthermore, when used as anode materials for sodium-ion batteries, it exhibits an encouragingly high reversible capacity of 720 mAh g(-1) at 50 mA g(-1) during the 2nd cycle. These results suggest the unique nanocomposite structure holds great promise for energy storage applications. (C) 2017 Elsevier B.V. All rights reserved.
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