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Electrochemical performance of carbon-encapsulated Fe3O4 nanoparticles in lithium-ion batteries: morphology and particle size effects

Cycling performance and schematic of the fabrication process for the Fe3O4@C composites. •Carbon-encapsulated Fe3O4 nanoparticles with varied microstructures were produced.•Pomegranate-like Fe3O4@C electrodes exhibit enhanced cycling ability and rate ability.•The carbon content has impact on the spe... Full description

Journal Title: Electrochimica Acta 20 October 2016, Vol.216, pp.475-483
Main Author: Zhang, Yongguang
Other Authors: Li, Yue , Li, Haipeng , Zhao, Yan , Yin, Fuxing , Bakenov, Zhumabay
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0013-4686 ; DOI: 10.1016/j.electacta.2016.09.054
Link: http://dx.doi.org/10.1016/j.electacta.2016.09.054
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recordid: sciversesciencedirect_elsevierS0013-4686(16)31942-9
title: Electrochemical performance of carbon-encapsulated Fe3O4 nanoparticles in lithium-ion batteries: morphology and particle size effects
format: Article
creator:
  • Zhang, Yongguang
  • Li, Yue
  • Li, Haipeng
  • Zhao, Yan
  • Yin, Fuxing
  • Bakenov, Zhumabay
subjects:
  • Lithium Ion Battery
  • Anode
  • Carbon-Encapsulated Fe 3 O 4 Nanoparticle (Fe 3 O 4 @C) Composite
  • Reactant Concentration
  • Microstructure Effects
ispartof: Electrochimica Acta, 20 October 2016, Vol.216, pp.475-483
description: Cycling performance and schematic of the fabrication process for the Fe3O4@C composites. •Carbon-encapsulated Fe3O4 nanoparticles with varied microstructures were produced.•Pomegranate-like Fe3O4@C electrodes exhibit enhanced cycling ability and rate ability.•The carbon content has impact on the specific capacity of the Fe3O4@C electrodes. Carbon-encapsulated Fe3O4 nanoparticles (Fe3O4@C) with varied microstructures were produced by controlling the relative concentrations of glucose and iron nitrate hydrate in a hydrothermal process, followed by heat treatment in Ar atmosphere. Three Fe3O4@C nanocomposites with different particle sizes (mean diameter 31.2, 45.1 and 55.3nm) and Fe3O4 core size (26.8, 15.4 and 10.3nm) were investigated for lithium storage performance. The Fe3O4@C nanoparticles with 15.4nm Fe3O4 core exhibit excellent initial specific capacity (1215mAhg−1) and significantly improved cycling performance (806mAhg−1 after 100 cycles) and rate capability (573mAhg−1 at current density of 1500mAg−1), in comparison to the other Fe3O4@C composites. This superior performance is attributed to microstructural effects spawned from the pomegranate-like carbon coating architecture of the composite, the appropriate carbon content, and the optimized particle size of Fe3O4@C nanoparticles, which combined suppress the agglomeration and pulverization of Fe3O4 nanoparticle upon cycling and enhance the electrical conductivity of the Fe3O4 anode.
language: eng
source:
identifier: ISSN: 0013-4686 ; DOI: 10.1016/j.electacta.2016.09.054
fulltext: fulltext
issn:
  • 00134686
  • 0013-4686
url: Link


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titleElectrochemical performance of carbon-encapsulated Fe3O4 nanoparticles in lithium-ion batteries: morphology and particle size effects
creatorZhang, Yongguang ; Li, Yue ; Li, Haipeng ; Zhao, Yan ; Yin, Fuxing ; Bakenov, Zhumabay
ispartofElectrochimica Acta, 20 October 2016, Vol.216, pp.475-483
identifierISSN: 0013-4686 ; DOI: 10.1016/j.electacta.2016.09.054
subjectLithium Ion Battery ; Anode ; Carbon-Encapsulated Fe 3 O 4 Nanoparticle (Fe 3 O 4 @C) Composite ; Reactant Concentration ; Microstructure Effects
descriptionCycling performance and schematic of the fabrication process for the Fe3O4@C composites. •Carbon-encapsulated Fe3O4 nanoparticles with varied microstructures were produced.•Pomegranate-like Fe3O4@C electrodes exhibit enhanced cycling ability and rate ability.•The carbon content has impact on the specific capacity of the Fe3O4@C electrodes. Carbon-encapsulated Fe3O4 nanoparticles (Fe3O4@C) with varied microstructures were produced by controlling the relative concentrations of glucose and iron nitrate hydrate in a hydrothermal process, followed by heat treatment in Ar atmosphere. Three Fe3O4@C nanocomposites with different particle sizes (mean diameter 31.2, 45.1 and 55.3nm) and Fe3O4 core size (26.8, 15.4 and 10.3nm) were investigated for lithium storage performance. The Fe3O4@C nanoparticles with 15.4nm Fe3O4 core exhibit excellent initial specific capacity (1215mAhg−1) and significantly improved cycling performance (806mAhg−1 after 100 cycles) and rate capability (573mAhg−1 at current density of 1500mAg−1), in comparison to the other Fe3O4@C composites. This superior performance is attributed to microstructural effects spawned from the pomegranate-like carbon coating architecture of the composite, the appropriate carbon content, and the optimized particle size of Fe3O4@C nanoparticles, which combined suppress the agglomeration and pulverization of Fe3O4 nanoparticle upon cycling and enhance the electrical conductivity of the Fe3O4 anode.
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descriptionCycling performance and schematic of the fabrication process for the Fe3O4@C composites. •Carbon-encapsulated Fe3O4 nanoparticles with varied microstructures were produced.•Pomegranate-like Fe3O4@C electrodes exhibit enhanced cycling ability and rate ability.•The carbon content has impact on the specific capacity of the Fe3O4@C electrodes. Carbon-encapsulated Fe3O4 nanoparticles (Fe3O4@C) with varied microstructures were produced by controlling the relative concentrations of glucose and iron nitrate hydrate in a hydrothermal process, followed by heat treatment in Ar atmosphere. Three Fe3O4@C nanocomposites with different particle sizes (mean diameter 31.2, 45.1 and 55.3nm) and Fe3O4 core size (26.8, 15.4 and 10.3nm) were investigated for lithium storage performance. The Fe3O4@C nanoparticles with 15.4nm Fe3O4 core exhibit excellent initial specific capacity (1215mAhg−1) and significantly improved cycling performance (806mAhg−1 after 100 cycles) and rate capability (573mAhg−1 at current density of 1500mAg−1), in comparison to the other Fe3O4@C composites. This superior performance is attributed to microstructural effects spawned from the pomegranate-like carbon coating architecture of the composite, the appropriate carbon content, and the optimized particle size of Fe3O4@C nanoparticles, which combined suppress the agglomeration and pulverization of Fe3O4 nanoparticle upon cycling and enhance the electrical conductivity of the Fe3O4 anode.
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abstractCycling performance and schematic of the fabrication process for the Fe3O4@C composites. •Carbon-encapsulated Fe3O4 nanoparticles with varied microstructures were produced.•Pomegranate-like Fe3O4@C electrodes exhibit enhanced cycling ability and rate ability.•The carbon content has impact on the specific capacity of the Fe3O4@C electrodes. Carbon-encapsulated Fe3O4 nanoparticles (Fe3O4@C) with varied microstructures were produced by controlling the relative concentrations of glucose and iron nitrate hydrate in a hydrothermal process, followed by heat treatment in Ar atmosphere. Three Fe3O4@C nanocomposites with different particle sizes (mean diameter 31.2, 45.1 and 55.3nm) and Fe3O4 core size (26.8, 15.4 and 10.3nm) were investigated for lithium storage performance. The Fe3O4@C nanoparticles with 15.4nm Fe3O4 core exhibit excellent initial specific capacity (1215mAhg−1) and significantly improved cycling performance (806mAhg−1 after 100 cycles) and rate capability (573mAhg−1 at current density of 1500mAg−1), in comparison to the other Fe3O4@C composites. This superior performance is attributed to microstructural effects spawned from the pomegranate-like carbon coating architecture of the composite, the appropriate carbon content, and the optimized particle size of Fe3O4@C nanoparticles, which combined suppress the agglomeration and pulverization of Fe3O4 nanoparticle upon cycling and enhance the electrical conductivity of the Fe3O4 anode.
pubElsevier Ltd
doi10.1016/j.electacta.2016.09.054
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