Journal of Solid State Electrochemistry

, Volume 8, Issue 11, pp 908–913 | Cite as

Lithium insertion into chemically etched multi-walled carbon nanotubes

  • Heon-Cheol Shin
  • Meilin LiuEmail author
  • B. Sadanadan
  • Apparao M. Rao
Original Paper


Lithium insertion (deinsertion) into (from) chemically etched multi-walled carbon nanotubes (c-MWNTs) has been investigated using various electrochemical techniques such as chronopotentiometry, chronoamperometry, and electrochemical impedance spectroscopy. The results indicate that not only the reversible capacity but also the rate capability was improved by a chemical etching (shortening) of the nanotubes. The observed enhancement in capability at high-rate lithium insertion/deinsertion is attributed to the increased electrochemically active area and reduced lithium diffusion length along the nanotubes, resulting from the structural defects and open ends of the c-MWNTs.


Carbon nanotube Chemical etching Lithium battery Rate capability 



This work was supported by the Office of Science, Department of Energy, under grant no. DE-FG02-01ER15220. The authors are grateful to Dr Jian Dong for his HRTEM observations of the nanotubes. One of the authors (H.C.S.) would also like to acknowledge the partial support by the Post-doctoral Fellowship Program of the Korea Science & Engineering Foundation (KOSEF). A.M.R. acknowledges support for this work from a grant through the NSF grant 0132573 and ERC-NSF award no. EEC-9731680.


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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Heon-Cheol Shin
    • 1
  • Meilin Liu
    • 1
    Email author
  • B. Sadanadan
    • 2
  • Apparao M. Rao
    • 2
  1. 1.School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaUSA
  2. 2.Kinard Laboratory of PhysicsClemson UniversityClemsonUSA

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