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Title: Combustion synthesis of MgFe{sub 2}O{sub 4}/graphene nanocomposite as a high-performance negative electrode for lithium ion batteries

Abstract

We present a facile and cost-effective urea-assisted auto-combustion method for synthesizing pure MgFe{sub 2}O{sub 4} nanoparticle and MgFe{sub 2}O{sub 4}/graphene nanocomposite samples followed by annealing at 600 °C for 5 h under N{sub 2} atmosphere. The X-ray diffraction pattern confirmed the single phase formation for both samples. The obtained morphology of the nanocomposite sample shows that the MgFe{sub 2}O{sub 4} nanoparticles are highly dispersed on conductive graphene nanosheets with particle size in the range of 50–100 nm. When applied as an anode material, MgFe{sub 2}O{sub 4}/graphene nanocomposite electrode shows a high reversible charge capacity of 764.4 mAh g{sup −1} at 0.04 C over 60 charge/discharge cycles and in spite of that it also retained a capacity of 219.9 mAh g{sup −1} at high current rate of 4.2 C. The obtained result is much better than the synthesized pure MgFe{sub 2}O{sub 4} nanoparticle electrode. The excellent electrochemical performance of the MgFe{sub 2}O{sub 4}/graphene nanocomposite electrode can be attributed to the strong favorable synergistic interaction between MgFe{sub 2}O{sub 4} and reduced graphene nanosheets, which supplied a large number of accessible active sites for Li{sup +}-ion insertion and short diffusion length for both Li{sup +} ions and electrons. In addition, the graphene nanosheetsmore » in the nanocomposite electrode provide high conductivity and accommodate the large volume expansion/contraction during cycling, resulting in high capacity and long cycling stability. - Highlights: • MgFe{sub 2}O{sub 4}/graphene nanocomposite was synthesized by facile urea-assisted method. • Such well-designed structure results in fine and strong interfacial interaction. • Nanocomposite anode shows high rate capability and long cycling stability. • Better performance is due to synergistic effect between MgFe{sub 2}O{sub 4} and graphene. • Simple, low cost and fast synthesis is attractive for large scale applications.« less

Authors:
; ; ;
Publication Date:
OSTI Identifier:
22403552
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 95; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ANODES; CAPACITY; COMBUSTION; DIFFUSION LENGTH; ELECTRIC CURRENTS; ELECTROCHEMISTRY; ELECTRONS; FERRITES; GRAPHENE; LITHIUM ION BATTERIES; MAGNESIUM COMPOUNDS; MORPHOLOGY; NANOCOMPOSITES; NANOPARTICLES; NANOSTRUCTURES; PARTICLE SIZE; PERFORMANCE; PHASE STABILITY; SHEETS; X-RAY DIFFRACTION

Citation Formats

Rai, Alok Kumar, Thi, Trang Vu, Gim, Jihyeon, and Kim, Jaekook, E-mail: jaekook@chonnam.ac.kr. Combustion synthesis of MgFe{sub 2}O{sub 4}/graphene nanocomposite as a high-performance negative electrode for lithium ion batteries. United States: N. p., 2014. Web. doi:10.1016/J.MATCHAR.2014.06.024.
Rai, Alok Kumar, Thi, Trang Vu, Gim, Jihyeon, & Kim, Jaekook, E-mail: jaekook@chonnam.ac.kr. Combustion synthesis of MgFe{sub 2}O{sub 4}/graphene nanocomposite as a high-performance negative electrode for lithium ion batteries. United States. doi:10.1016/J.MATCHAR.2014.06.024.
Rai, Alok Kumar, Thi, Trang Vu, Gim, Jihyeon, and Kim, Jaekook, E-mail: jaekook@chonnam.ac.kr. Mon . "Combustion synthesis of MgFe{sub 2}O{sub 4}/graphene nanocomposite as a high-performance negative electrode for lithium ion batteries". United States. doi:10.1016/J.MATCHAR.2014.06.024.
@article{osti_22403552,
title = {Combustion synthesis of MgFe{sub 2}O{sub 4}/graphene nanocomposite as a high-performance negative electrode for lithium ion batteries},
author = {Rai, Alok Kumar and Thi, Trang Vu and Gim, Jihyeon and Kim, Jaekook, E-mail: jaekook@chonnam.ac.kr},
abstractNote = {We present a facile and cost-effective urea-assisted auto-combustion method for synthesizing pure MgFe{sub 2}O{sub 4} nanoparticle and MgFe{sub 2}O{sub 4}/graphene nanocomposite samples followed by annealing at 600 °C for 5 h under N{sub 2} atmosphere. The X-ray diffraction pattern confirmed the single phase formation for both samples. The obtained morphology of the nanocomposite sample shows that the MgFe{sub 2}O{sub 4} nanoparticles are highly dispersed on conductive graphene nanosheets with particle size in the range of 50–100 nm. When applied as an anode material, MgFe{sub 2}O{sub 4}/graphene nanocomposite electrode shows a high reversible charge capacity of 764.4 mAh g{sup −1} at 0.04 C over 60 charge/discharge cycles and in spite of that it also retained a capacity of 219.9 mAh g{sup −1} at high current rate of 4.2 C. The obtained result is much better than the synthesized pure MgFe{sub 2}O{sub 4} nanoparticle electrode. The excellent electrochemical performance of the MgFe{sub 2}O{sub 4}/graphene nanocomposite electrode can be attributed to the strong favorable synergistic interaction between MgFe{sub 2}O{sub 4} and reduced graphene nanosheets, which supplied a large number of accessible active sites for Li{sup +}-ion insertion and short diffusion length for both Li{sup +} ions and electrons. In addition, the graphene nanosheets in the nanocomposite electrode provide high conductivity and accommodate the large volume expansion/contraction during cycling, resulting in high capacity and long cycling stability. - Highlights: • MgFe{sub 2}O{sub 4}/graphene nanocomposite was synthesized by facile urea-assisted method. • Such well-designed structure results in fine and strong interfacial interaction. • Nanocomposite anode shows high rate capability and long cycling stability. • Better performance is due to synergistic effect between MgFe{sub 2}O{sub 4} and graphene. • Simple, low cost and fast synthesis is attractive for large scale applications.},
doi = {10.1016/J.MATCHAR.2014.06.024},
journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 95,
place = {United States},
year = {2014},
month = {9}
}