Study of the Process of Reversible Insertion of Lithium into Nanostructured Materials Based on Germanium

I. M. GavrilinI. M. Gavrilin, V. A. SmolyaninovV. A. Smolyaninov, A. A. DronovA. A. Dronov, S. A. GavrilovS. A. Gavrilov, A. Yu. TrifonovA. Yu. Trifonov, T. L. KulovaT. L. Kulova, A. A. Kuz’minaA. A. Kuz’mina, A. M. SkundinA. M. Skundin
Российский электрохимический журнал
Abstract / Full Text

Nanostructured germanium samples prepared by electrochemical deposition from aqueous solution of 0.05 М germanium oxide onto titanium substrate are tested as the negative electrodes of lithium-ion batteries. The reversible capacity in the process of lithium insertion-extraction is found to be about 1180 mA h/g, which corresponds to the formation of Li3.05Ge alloy. The effective diffusion coefficient of lithium in germanium is shown to be 1.2 × 10–11 cm2/s. The degradation of the germanium electrode upon cycling at 0.6 С rate is less than 0.3% per cycle.

Author information
  • National Research University of Electronic Technology, Zelenograd, Moscow oblast, 124498, RussiaI. M. Gavrilin, V. A. Smolyaninov, A. A. Dronov, S. A. Gavrilov & A. Yu. Trifonov
  • Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119071, RussiaT. L. Kulova, A. A. Kuz’mina & A. M. Skundin
  • Lukin Research Institute of Physical Problems, Zelenograd, Moscow oblast, 124498, RussiaA. Yu. Trifonov
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