Facile Synthesis of SiO2@C Nanoparticles Anchored on MWNT as High-Performance Anode Materials for Li-ion Batteries

Yan Zhao, Zhengjun Liu, Yongguang Zhang, Almagul Mentbayeva, Xin Wang, M. Yu Maximov, Baoxi Liu, Zhumabay Bakenov, Fuxing Yin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Carbon-coated silica nanoparticles anchored on multi-walled carbon nanotubes (SiO2@C/MWNT composite) were synthesized via a simple and facile sol-gel method followed by heat treatment. Scanning and transmission electron microscopy (SEM and TEM) studies confirmed densely anchoring the carbon-coated SiO2 nanoparticles onto a flexible MWNT conductive network, which facilitated fast electron and lithium-ion transport and improved structural stability of the composite. As prepared, ternary composite anode showed superior cyclability and rate capability compared to a carbon-coated silica counterpart without MWNT (SiO2@C). The SiO2@C/MWNT composite exhibited a high reversible discharge capacity of 744 mAh g−1 at the second discharge cycle conducted at a current density of 100 mA g−1 as well as an excellent rate capability, delivering a capacity of 475 mAh g−1 even at 1000 mA g−1. This enhanced electrochemical performance of SiO2@C/MWNT ternary composite anode was associated with its unique core-shell and networking structure and a strong mutual synergistic effect among the individual components.

Original languageEnglish
Article number459
JournalNanoscale Research Letters
Volume12
DOIs
Publication statusPublished - 2017
Externally publishedYes

Fingerprint

electric batteries
Anodes
anodes
Nanoparticles
nanoparticles
composite materials
Composite materials
synthesis
Carbon
ions
Silicon Dioxide
carbon
Silica
silicon dioxide
Transmission electron microscopy
transmission electron microscopy
Scanning electron microscopy
Carbon Nanotubes
scanning electron microscopy
structural stability

Keywords

  • Anode
  • Lithium-ion battery
  • SiO@C/MWNT composite
  • Sol-gel synthesis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Facile Synthesis of SiO2@C Nanoparticles Anchored on MWNT as High-Performance Anode Materials for Li-ion Batteries. / Zhao, Yan; Liu, Zhengjun; Zhang, Yongguang; Mentbayeva, Almagul; Wang, Xin; Maximov, M. Yu; Liu, Baoxi; Bakenov, Zhumabay; Yin, Fuxing.

In: Nanoscale Research Letters, Vol. 12, 459, 2017.

Research output: Contribution to journalArticle

Zhao, Yan ; Liu, Zhengjun ; Zhang, Yongguang ; Mentbayeva, Almagul ; Wang, Xin ; Maximov, M. Yu ; Liu, Baoxi ; Bakenov, Zhumabay ; Yin, Fuxing. / Facile Synthesis of SiO2@C Nanoparticles Anchored on MWNT as High-Performance Anode Materials for Li-ion Batteries. In: Nanoscale Research Letters. 2017 ; Vol. 12.
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AU - Wang, Xin

AU - Maximov, M. Yu

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AU - Bakenov, Zhumabay

AU - Yin, Fuxing

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