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Title: Electrochemical studies of CNT/Si–SnSb nanoparticles for lithium ion batteries

Highlights: • Si added SnSb and CNT exhibits very low particle size of below 30 nm • A strong PL quenching due to the addition of Si to SnSb. • Electrochemical studies show CNT added SnSb shows good capacity retention. - Abstract: Nano-structured SnSb, SnSb–CNT, Si–SnSb and Si–SnSb–CNT alloys were synthesized from metal chlorides of Sn, Sb and Si via reductive co-precipitation technique using NaBH{sub 4} as reducing agent. The as prepared compounds were characterized by various techniques such as X-ray diffraction (XRD), scanning electron microscope (SEM), Raman, Fourier transform infra-red (FTIR) and photoluminescence (PL) spectroscopy. The electrochemical performances of the compounds were characterized by galvanostatic cycling (GC) and cyclic voltammetry (CV). The Si–SnSb–CNT compound shows a high reversible capacity of 1200 mAh g{sup −1}. However, the rapid capacity fading was observed during cycling. In contrast, SnSb–CNT compound showed a high reversible capacity of 568 mAh g{sup −1} at 30th cycles with good cycling stability. The improved reversible capacity and cyclic performance of the SnSb–CNT compound could be attributed to the nanosacle dimension of SnSb particles and the structural advantage of CNTs.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ; ;  [6] ;  [3]
  1. Department of Physics, Bannari Amman Institute of Technology, Sathyamangalam 638402 (India)
  2. (Singapore)
  3. Department of Physics, Advanced Batteries Lab, National University of Singapore, 117542 (Singapore)
  4. Department of Physics, Avinashilingam University for Women, Coimbatore 641043 (India)
  5. Centre for Research in Nanotechnology, Karunya University, Coimbatore 641114 (India)
  6. Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam 603102 (India)
Publication Date:
OSTI Identifier:
22475933
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ANTIMONY ALLOYS; CARBON NANOTUBES; COPRECIPITATION; ELECTRIC BATTERIES; ELECTROCHEMISTRY; FOURIER TRANSFORMATION; INFRARED SPECTRA; LITHIUM IONS; NANOCOMPOSITES; NANOMATERIALS; NANOPARTICLES; PARTICLE SIZE; PHOTOLUMINESCENCE; SCANNING ELECTRON MICROSCOPY; SILICON; SPECTROSCOPY; TIN ALLOYS; X-RAY DIFFRACTION