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Facile synthesis of carbon-coated Fe 3 O 4 core–shell nanoparticles as anode materials for lithium-ion batteries

Core–shell composites, carbon-coated Fe 3 O 4 (Fe 3 O 4 @C) with ~30 nm Fe 3 O 4 nanoparticles as cores and 3–7 nm carbon as shells, was successfully prepared through simple hydrothermal reaction followed by heat treatment. High-resolution transmission electron microscopy and energy dispersive spect... Full description

Journal Title: Journal of Nanoparticle Research 2015, Vol.17(9), pp.1-9
Main Author: Li, Haipeng
Other Authors: Li, Yue , Zhang, Yongguang , Zhang, Chengwei
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1388-0764 ; E-ISSN: 1572-896X ; DOI: 10.1007/s11051-015-3178-z
Link: http://dx.doi.org/10.1007/s11051-015-3178-z
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recordid: springer_jour10.1007/s11051-015-3178-z
title: Facile synthesis of carbon-coated Fe 3 O 4 core–shell nanoparticles as anode materials for lithium-ion batteries
format: Article
creator:
  • Li, Haipeng
  • Li, Yue
  • Zhang, Yongguang
  • Zhang, Chengwei
subjects:
  • Lithium-ion battery
  • Carbon-coated FeO
  • Composite anode
  • Core–shell structure
  • Energy storage
ispartof: Journal of Nanoparticle Research, 2015, Vol.17(9), pp.1-9
description: Core–shell composites, carbon-coated Fe 3 O 4 (Fe 3 O 4 @C) with ~30 nm Fe 3 O 4 nanoparticles as cores and 3–7 nm carbon as shells, was successfully prepared through simple hydrothermal reaction followed by heat treatment. High-resolution transmission electron microscopy and energy dispersive spectroscopy mapping showed the formation of a highly developed core–shell structure with uniform carbon coating on the surface of Fe 3 O 4 nanoparticle. In the Fe 3 O 4 @C composite, carbon coating layer provides an effective electron conductive paths. It acts as spacers to avoid the aggregation of Fe 3 O 4 and buffers the volume changes of Fe 3 O 4 . Accordingly, nano-sized Fe 3 O 4 core in the core–shell structure not only better accommodates large strains but also provides short diffusion paths for Li + insertion/deinsertion. The Fe 3 O 4 @C composite exhibits good cyclability and delivers a high initial discharge capacity of 982 mAh g −1 and a reversible discharge capacity of 718 mAh g −1 after 100 cycles at 0.1 C. Even up to 2 C, a reversible capacity of 302 mAh g −1 is obtained.
language: eng
source:
identifier: ISSN: 1388-0764 ; E-ISSN: 1572-896X ; DOI: 10.1007/s11051-015-3178-z
fulltext: fulltext
issn:
  • 1572-896X
  • 1572896X
  • 1388-0764
  • 13880764
url: Link


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titleFacile synthesis of carbon-coated Fe 3 O 4 core–shell nanoparticles as anode materials for lithium-ion batteries
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subjectLithium-ion battery ; Carbon-coated FeO ; Composite anode ; Core–shell structure ; Energy storage
descriptionCore–shell composites, carbon-coated Fe 3 O 4 (Fe 3 O 4 @C) with ~30 nm Fe 3 O 4 nanoparticles as cores and 3–7 nm carbon as shells, was successfully prepared through simple hydrothermal reaction followed by heat treatment. High-resolution transmission electron microscopy and energy dispersive spectroscopy mapping showed the formation of a highly developed core–shell structure with uniform carbon coating on the surface of Fe 3 O 4 nanoparticle. In the Fe 3 O 4 @C composite, carbon coating layer provides an effective electron conductive paths. It acts as spacers to avoid the aggregation of Fe 3 O 4 and buffers the volume changes of Fe 3 O 4 . Accordingly, nano-sized Fe 3 O 4 core in the core–shell structure not only better accommodates large strains but also provides short diffusion paths for Li + insertion/deinsertion. The Fe 3 O 4 @C composite exhibits good cyclability and delivers a high initial discharge capacity of 982 mAh g −1 and a reversible discharge capacity of 718 mAh g −1 after 100 cycles at 0.1 C. Even up to 2 C, a reversible capacity of 302 mAh g −1 is obtained.
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titleFacile synthesis of carbon-coated Fe 3 O 4 core–shell nanoparticles as anode materials for lithium-ion batteries
descriptionCore–shell composites, carbon-coated Fe 3 O 4 (Fe 3 O 4 @C) with ~30 nm Fe 3 O 4 nanoparticles as cores and 3–7 nm carbon as shells, was successfully prepared through simple hydrothermal reaction followed by heat treatment. High-resolution transmission electron microscopy and energy dispersive spectroscopy mapping showed the formation of a highly developed core–shell structure with uniform carbon coating on the surface of Fe 3 O 4 nanoparticle. In the Fe 3 O 4 @C composite, carbon coating layer provides an effective electron conductive paths. It acts as spacers to avoid the aggregation of Fe 3 O 4 and buffers the volume changes of Fe 3 O 4 . Accordingly, nano-sized Fe 3 O 4 core in the core–shell structure not only better accommodates large strains but also provides short diffusion paths for Li + insertion/deinsertion. The Fe 3 O 4 @C composite exhibits good cyclability and delivers a high initial discharge capacity of 982 mAh g −1 and a reversible discharge capacity of 718 mAh g −1 after 100 cycles at 0.1 C. Even up to 2 C, a reversible capacity of 302 mAh g −1 is obtained.
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abstractCore–shell composites, carbon-coated Fe 3 O 4 (Fe 3 O 4 @C) with ~30 nm Fe 3 O 4 nanoparticles as cores and 3–7 nm carbon as shells, was successfully prepared through simple hydrothermal reaction followed by heat treatment. High-resolution transmission electron microscopy and energy dispersive spectroscopy mapping showed the formation of a highly developed core–shell structure with uniform carbon coating on the surface of Fe 3 O 4 nanoparticle. In the Fe 3 O 4 @C composite, carbon coating layer provides an effective electron conductive paths. It acts as spacers to avoid the aggregation of Fe 3 O 4 and buffers the volume changes of Fe 3 O 4 . Accordingly, nano-sized Fe 3 O 4 core in the core–shell structure not only better accommodates large strains but also provides short diffusion paths for Li + insertion/deinsertion. The Fe 3 O 4 @C composite exhibits good cyclability and delivers a high initial discharge capacity of 982 mAh g −1 and a reversible discharge capacity of 718 mAh g −1 after 100 cycles at 0.1 C. Even up to 2 C, a reversible capacity of 302 mAh g −1 is obtained.
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doi10.1007/s11051-015-3178-z
pages1-9
date2015-09