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Journal of Materials Science

, Volume 54, Issue 9, pp 7110–7118 | Cite as

Electrochemical performance of Sb2S3/CNT free-standing flexible anode for Li-ion batteries

  • Indu Elizabeth
  • Bhanu Pratap Singh
  • Sukumaran GopukumarEmail author
Energy materials
  • 19 Downloads

Abstract

Sb2S3/CNT composite has been synthesized through ethylene glycol-mediated solvothermal process, and binderless, free-standing, flexible anode is prepared from the composite through vacuum filtration technique. The 1-D rod-like structure of Sb2S3 prevents self-agglomeration and exhibits well-guided charge–discharge kinetics and high surface area enhancing their electrochemical performance in Li-ion batteries. The introduction of CNTs to the Sb2S3 facilitates the preparation of free-standing flexible anodes as well as buffers the volume changes that occur during repeated cycling, thereby improving the cycling stability. The Sb2S3/CNT free-standing anode exhibits a high initial discharge capacity of 930 mAhg−1 at a current rate of 200 mAg−1. The anode also exhibits excellent lifetime stability and rate capability by cycling at different current rates up to 1200 mAg−1. Sb2S3/CNT anode gives a stable capacity of 443 mAhg−1 after 100 cycles at a current density of 200 mAg−1, while Sb2S3 rods deliver only 293 mAhg−1 after 100 cycles at the same current rate. This free-standing flexible Sb2S3/CNT anode is highly promising in comparison with conventional graphite powder anode.

Notes

Acknowledgement

Indu Elizabeth acknowledges CII, EON Electric Ltd. and SERB for funding her research work under Prime Minister’s Fellowship for Doctoral Research.

Supplementary material

10853_2018_3275_MOESM1_ESM.docx (4.1 mb)
Supplementary material 1 (DOCX 4195 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.CSIR-Central Electrochemical Research InstituteKaraikudiIndia
  2. 2.CSIR-National Physical LaboratoryNew DelhiIndia
  3. 3.Academy of Scientific and Innovative ResearchGhaziabadIndia

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