Technical Physics Letters
To authors
Development of the anode for a lithium-ion battery based on nanoporous germanium formed by the implantation with silver ions
Gavrilova T. P.
1, Khantimerov S. M.
1, Nuzhdin V. I. 1, Valeev V. F.1, Rogov A. M.1,2, Stepanov A. L.
1
1Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Kazan, Russia
2Kazan Federal University, Kazan, Russia
2Kazan Federal University, Kazan, Russia
Email: tatyana.gavrilova@gmail.com, khantim@mail.ru, aanstep@gmail.com
In this work, the possibility of using a nanoporous Ge layer (p-Ge), formed by implantation with Ag+ ions on a single crystal c-Ge substrate, as an anode electrode for a lithium-ion battery was studied. For this, the ion implantation of c-Ge substrutes was carried out at an energy of E=30 keV, a current density of J=5 μA/cm2, and a dose of D=1.3·1016 ion/cm2. It was shown that the obtained spongy Ag:p-Ge layers, consisting of intertwining Ge nanowires, demonstrate a high Coulomb efficiency (>97%) after the first cycle and show up to 79.5% of reversible capacity after 1000 cycles. Keywords: nanoporous germanium, ion implantation, anod, lithium-ion battery.
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