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Title: Synthesis and electrochemical performance of mesoporous SiO{sub 2}–carbon nanofibers composite as anode materials for lithium secondary batteries

Abstract

Highlights: • Mesoporous SiO{sub 2}–carbon nanofibers composite synthesized on Ni foam without any binder. • This composite was directly applied as anode material of Li secondary batteries. • Showed the highest initial (2420 mAh/g) and discharging (2092 mAh/g) capacity. • This material achieved a retention rate of 86.4% after 30 cycles. - Abstract: In this study, carbon nanofibers (CNFs) and mesoporous SiO{sub 2}–carbon nanofibers composite were synthesized and applied as the anode materials in lithium secondary batteries. CNFs and mesoporous SiO{sub 2}–CNFs composite were grown via chemical vapor deposition method with iron-copper catalysts. Mesoporous SiO{sub 2} materials were prepared by sol–gel method using tetraethylorthosilicate as the silica source and cetyltrimethylammoniumchloride as the template. Ethylene was used as the carbon source and passes into a quartz reactor of a tube furnace heated to 600 °C, and the temperature was maintained at 600 °C for 10 min to synthesize CNFs and mesoporous SiO{sub 2}–CNFs composite. The electrochemical characteristics of the as-prepared CNFs and mesoporous SiO{sub 2}–CNFs composite as the anode of lithium secondary batteries were investigated using a three-electrode cell. In particular, the mesoporous SiO{sub 2}–CNFs composites synthesized without binder after depositing mesoporous SiO{sub 2} on Ni foam showed the highest chargingmore » and discharging capacity and retention rate. The initial capacity (2420 mAh/g) of mesoporous SiO{sub 2}–CNFs composites decreased to 2092 mAh/g after 30 cycles at a retention rate of 86.4%.« less

Authors:
;  [1];  [2];  [1];  [1]
  1. Department of Chemistry, Keimyung University (Korea, Republic of)
  2. Department of Chemical Engineering, Keimyung University (Korea, Republic of)
Publication Date:
OSTI Identifier:
22581641
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 82; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANODES; CARBON; CARBON FIBERS; CHEMICAL VAPOR DEPOSITION; COMPOSITE MATERIALS; COPPER; ELECTRIC BATTERIES; ELECTROCHEMISTRY; ETHYLENE; FOAMS; IRON; LITHIUM; NANOFIBERS; NICKEL; QUARTZ; RETENTION; SILICON OXIDES; SOL-GEL PROCESS; SURFACE PROPERTIES; SYNTHESIS

Citation Formats

Hyun, Yura, Choi, Jin-Yeong, Park, Heai-Ku, Bae, Jae Young, and Lee, Chang-Seop. Synthesis and electrochemical performance of mesoporous SiO{sub 2}–carbon nanofibers composite as anode materials for lithium secondary batteries. United States: N. p., 2016. Web. doi:10.1016/J.MATERRESBULL.2016.03.006.
Hyun, Yura, Choi, Jin-Yeong, Park, Heai-Ku, Bae, Jae Young, & Lee, Chang-Seop. Synthesis and electrochemical performance of mesoporous SiO{sub 2}–carbon nanofibers composite as anode materials for lithium secondary batteries. United States. doi:10.1016/J.MATERRESBULL.2016.03.006.
Hyun, Yura, Choi, Jin-Yeong, Park, Heai-Ku, Bae, Jae Young, and Lee, Chang-Seop. Sat . "Synthesis and electrochemical performance of mesoporous SiO{sub 2}–carbon nanofibers composite as anode materials for lithium secondary batteries". United States. doi:10.1016/J.MATERRESBULL.2016.03.006.
@article{osti_22581641,
title = {Synthesis and electrochemical performance of mesoporous SiO{sub 2}–carbon nanofibers composite as anode materials for lithium secondary batteries},
author = {Hyun, Yura and Choi, Jin-Yeong and Park, Heai-Ku and Bae, Jae Young and Lee, Chang-Seop},
abstractNote = {Highlights: • Mesoporous SiO{sub 2}–carbon nanofibers composite synthesized on Ni foam without any binder. • This composite was directly applied as anode material of Li secondary batteries. • Showed the highest initial (2420 mAh/g) and discharging (2092 mAh/g) capacity. • This material achieved a retention rate of 86.4% after 30 cycles. - Abstract: In this study, carbon nanofibers (CNFs) and mesoporous SiO{sub 2}–carbon nanofibers composite were synthesized and applied as the anode materials in lithium secondary batteries. CNFs and mesoporous SiO{sub 2}–CNFs composite were grown via chemical vapor deposition method with iron-copper catalysts. Mesoporous SiO{sub 2} materials were prepared by sol–gel method using tetraethylorthosilicate as the silica source and cetyltrimethylammoniumchloride as the template. Ethylene was used as the carbon source and passes into a quartz reactor of a tube furnace heated to 600 °C, and the temperature was maintained at 600 °C for 10 min to synthesize CNFs and mesoporous SiO{sub 2}–CNFs composite. The electrochemical characteristics of the as-prepared CNFs and mesoporous SiO{sub 2}–CNFs composite as the anode of lithium secondary batteries were investigated using a three-electrode cell. In particular, the mesoporous SiO{sub 2}–CNFs composites synthesized without binder after depositing mesoporous SiO{sub 2} on Ni foam showed the highest charging and discharging capacity and retention rate. The initial capacity (2420 mAh/g) of mesoporous SiO{sub 2}–CNFs composites decreased to 2092 mAh/g after 30 cycles at a retention rate of 86.4%.},
doi = {10.1016/J.MATERRESBULL.2016.03.006},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 82,
place = {United States},
year = {2016},
month = {10}
}