Journal of Solid State Electrochemistry

, Volume 17, Issue 12, pp 3015–3020

Model Ge microstructures as anodes for Li-ion batteries

  • Brandon R. Long
  • Jason L. Goldman
  • Ralph G. Nuzzo
  • Andrew A. Gewirth
Original Paper


We examine the properties of microstructured Ge electrodes for Li-ion battery applications. Model-microfabricated single-crystalline Ge electrode structures are used to investigate the effects of Cu coating and partial discharging on cycle life. Results show that the Ge microstructures insert Li more isotropically than do comparable ones comprised of Si. A model Ge microbar electrode with a Cu coating is capable of 95 % coulombic efficiency after 40 cycles when the amount of charge is limited. The microstructured Ge electrode is found to exhibit poor performance at higher delithiation rates (above C/5) relative to microstructured Si electrodes. These results provide an understanding of the effects of electrochemical processes on model-microstructured Ge electrodes which may ultimately aid in the development of advanced anodes for Li-ion batteries.


Li-ion batteries Germanium anode Microstructured electrode High rate 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Brandon R. Long
    • 1
  • Jason L. Goldman
    • 1
  • Ralph G. Nuzzo
    • 1
  • Andrew A. Gewirth
    • 1
  1. 1.Department of ChemistryUniversity of Illinois at Urbana-ChampaignUrbanaUSA

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