Facile synthesis of MgFe<sub>2</sub>O<sub>4</sub>/C composites as anode materials for lithium-ion batteries with excellent cycling and rate performance

Huo, Ningning; Yin, Yadong; Liu, Wenfeng; Zhang, Jun; Ding, Yanmin; Wang, Qiuxian; Shi, Zhenpu; Yang, Shuting

doi:10.1039/c6nj00084c

Cited by 36 publications

(27 citation statements)

References 48 publications

(71 reference statements)

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“…The I D / I G ratio decreases from 1.25 to 1.19 and 1.15 (MFO@C‐1, MFO@C‐2, and MFO@C‐3, respectively; Figure b), which indicates a decrease in the disorder of the carbon as the MgFe 2 O 4 concentration increases. Additionally, the characteristic peaks of MgFe 2 O 4 can be seen in the range of

\overset{ν}{true}

=300–800 cm −1 in Figure b, which is consistent with the results of MgFe 2 O 4 nanoparticles reported previously …”

Section: Resultssupporting

confidence: 92%

“…The galvanostatic charge–discharge profiles of MgFe 2 O 4 and MgFe 2 O 4 @C nanofibers under a current density of 0.1 A g −1 are shown in Figure . During the first discharge process of MgFe 2 O 4 @C nanofibers, two plateaus are present at approximately 0.7 and 0.5 V (Figure a–c), which correspond to the irreversible conversion reactions of MgFe 2 O 4 @C with Li + . The initial discharge capacities are 1157, 1383, and 1174 mAh g −1 for MFO@C‐1, MFO@C‐2, and MFO@C‐3, respectively.…”

Section: Resultsmentioning

confidence: 96%

“…Cyclic voltammetry (CV) was used to evaluate the electrochemical behavior of the MgFe 2 O 4 @C nanofibers at a scan rate of 0.1 mV s −1 in the voltage range of 0.01–3 V. The first five CV cycles of MFO@C‐2 nanofibers for the lithium insertion and extraction process are shown in Figure . There is a small cathodic peak at approximately 0.51 V in the first cathodic process, which corresponds to the irreversible intercalation of Li + into MgFe 2 O 4 to form Li n MgFe 2 O 4 . The subsequent sharp peak at approximately 0.19 V can be assigned to the reduction of Fe 3+ to Fe 0 and the formation of MgO and a SEI film.…”

Section: Resultsmentioning

confidence: 98%

“…Herein, we present a facile route to prepare carbon‐coated MgFe 2 O 4 (MgFe 2 O 4 @C) nanofibers by a combination of electrospinning and thermal treatment using polydopamine (PDA) as the carbon precursor. MgFe 2 O 4 , which has a mixed‐spinel structure, is a promising alternative anode materials for LIBs because of its high theoretical specific capacity of ≈1072 mAh g −1 . In addition, MgO does not react with Li, which can prevent the aggregation of iron oxides during the discharge/charge process and also act as a buffer matrix during the lithiation/delithiation process .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, MgO does not react with Li, which can prevent the aggregation of iron oxides during the discharge/charge process and also act as a buffer matrix during the lithiation/delithiation process . So far, MgFe 2 O 4 has been prepared using a sol–gel autocombustion process, ceramic method, and one‐step solvothermal method . All of these materials exhibited good electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

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Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

Luo

Zang

et al. 2017

Energy Tech

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Carbon‐coated magnesium ferrite (MgFe2O4@C) nanofibers were synthesized by electrospinning technology and a subsequent carbonization process using polydopamine as carbon precursor. SEM and TEM observations revealed that N‐doped carbon layers with different thicknesses were coated uniformly on the surface of the MgFe2O4 nanofibers. If used as anode materials for lithium–ion batteries (LIBs), MgFe2O4@C nanofibers with a carbon thickness of 7 nm exhibited an excellent cycling performance and rate capability compared with pristine MgFe2O4 and MgFe2O4@C nanofibers with carbon thicknesses of 4 and 15 nm, respectively. These nanofibers delivered high initial discharge and charge capacities of 1383 and 1044 mAh g−1, respectively, with a Coulombic efficiency of 75.5 %. A reversible capacity of 926 mAh g−1 could be obtained after 200 cycles at 0.1 Ag−1. Even at a high rate of 1 A g−1 after 500 cycles, they still maintained a stable capacity of 610 mAh g−1 with a capacity retention of 81.9 %. Therefore, the MgFe2O4@C nanofibers are a potential anode candidate for LIBs.

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\overset{ν}{true}

=300–800 cm −1 in Figure b, which is consistent with the results of MgFe 2 O 4 nanoparticles reported previously …”

Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

Luo

Zang

et al. 2017

Energy Tech

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A 3D Porous MgFe₂O₄ Integrative Electrode as a Binder‐Free Anode with High Rate Capability and Long Cycle Lifetime

Yin

Liu²,

Gao

et al. 2018

ChemElectroChem

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A superior 3D architecture Ni foam/MgFe 2 O 4 integrative electrode was firstly designed and synthesized via a simple hydrothermal method and subsequent calcination as a binder-free anode for lithium-ion batteries (LIBs). MgFe 2 O 4 nanoparticles with diameter of about 60 nm interconnect with each other to form porous nanosheets and anchor on the Ni foam (N-MFO). The 3D architectural design with superior conductivity and a strong skeleton structure not only provides fast kinetics, reduces the polarization and enhances the rate performance, but also buffers volume expansion and improves the cycle stability during the discharge/charge process. In addition, the interfacial lithium storage of the N-MFO electrode promotes high lithium-storage capacity, superior cycle stability and impressive rate capability. Even cycling at a current density of 5 A g À 1 for 1000 cycles, the capacity remains stable at about 780 mAh g À 1 .

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High Capacity Electrospun MgFe₂O₄–C Composite Nanofibers as an Anode Material for Lithium Ion Batteries

2018

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MgFe 2 O 4 -C composite nanofibers were prepared via electrospinning technique followed by carbonization at 600 8C. Thermogravimetric-differential thermal analysis (TG-DTA) results showed ignition, decomposition and carbonization temperatures of the as-grown fibers. Formation of the nanocrystalline phase of the MgFe 2 O 4 over the amorphous phase of the carbon fibers sample was confirmed from the analysis of the measured XRD results. FE-SEM images of the as-spun and calcined fibers sample showed that the formation of one dimensional (1-D) MgFe 2 O 4 -C composite nanofibers and the formed 1-D nanofibers were well interconnected with high porous structured morphology. The electrochemical properties of the MgFe 2 O 4 -C composite nanofibers sample were tested as an anode material for lithium-ion battery. Lithium-ion battery made up of the newly developed MgFe 2 O 4 -C composite nanofibers sample, used as an anode material, showed discharge capacity of 575 mAh g À1 at a current density of 100 mA g À1 after 20 th cycles. Further, the discharge capacity of the lithium-ion battery also measured at a high current density of 1 A g À1 and it was found to be 433 mAh g À1 even after 85 cycles. Also, the lithium-ion battery showed exceptional reversible capacity with the coulombic efficiency of 99.6% even after 85 cycles at a high current density of 1 A g À1 . Hence the electrochemical properties suggest that the newly developed MgFe 2 O 4 -C composite nanofibers can be used as high capacity anode materials for lithiumion batteries.

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Facile synthesis of MgFe₂O₄/C composites as anode materials for lithium-ion batteries with excellent cycling and rate performance

Abstract: A MgFe2O4/C material is synthesized via a facile method and the MgFe2O4/C electrode shows excellent cycling and rate capability.

Cited by 36 publications

References 48 publications

Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

A 3D Porous MgFe₂O₄ Integrative Electrode as a Binder‐Free Anode with High Rate Capability and Long Cycle Lifetime

High Capacity Electrospun MgFe₂O₄–C Composite Nanofibers as an Anode Material for Lithium Ion Batteries

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Facile synthesis of MgFe2O4/C composites as anode materials for lithium-ion batteries with excellent cycling and rate performance

Abstract: A MgFe2O4/C material is synthesized via a facile method and the MgFe2O4/C electrode shows excellent cycling and rate capability.

Cited by 36 publications

References 48 publications

Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

A 3D Porous MgFe2O4 Integrative Electrode as a Binder‐Free Anode with High Rate Capability and Long Cycle Lifetime

High Capacity Electrospun MgFe2O4–C Composite Nanofibers as an Anode Material for Lithium Ion Batteries

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Product

Resources

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Facile synthesis of MgFe₂O₄/C composites as anode materials for lithium-ion batteries with excellent cycling and rate performance

A 3D Porous MgFe₂O₄ Integrative Electrode as a Binder‐Free Anode with High Rate Capability and Long Cycle Lifetime

High Capacity Electrospun MgFe₂O₄–C Composite Nanofibers as an Anode Material for Lithium Ion Batteries