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Lithiophilic coating based on Ge nanowires for enhancement of the Coulombic efficiency of lithium deposition/dissolution

, 
Yulia O Kudryashova 1
Yulia O Kudryashova
,  , 
Ivan S. Marinkin 2
Ivan S. Marinkin
,  ,  , 
Alexandr Mordukhaevich Skundin 1
Alexandr Mordukhaevich Skundin
1 Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russian Federation
3 Department of Physics, M.V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
10.71267/mencom.8072
Published 23 September 2026
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Gavrilin I. M. et al. Lithiophilic coating based on Ge nanowires for enhancement of the Coulombic efficiency of lithium deposition/dissolution // Mendeleev Communications. 2026.
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Gavrilin I. M., Kudryashova Y. O., Li S. A., Marinkin I. S., Tsiniaikin I. I., Kulova T. L., Skundin A. M. Lithiophilic coating based on Ge nanowires for enhancement of the Coulombic efficiency of lithium deposition/dissolution // Mendeleev Communications. 2026.
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TY - JOUR
DO - 10.71267/mencom.8072
UR - https://mendcomm.colab.ws/publications/10.71267/mencom.8072
TI - Lithiophilic coating based on Ge nanowires for enhancement of the Coulombic efficiency of lithium deposition/dissolution
T2 - Mendeleev Communications
AU - Gavrilin, Iliya Mikhailovich
AU - Kudryashova, Yulia O
AU - Li, Sergey Andreevich
AU - Marinkin, Ivan S.
AU - Tsiniaikin, Il'ya Ivanovich
AU - Kulova, Tat'yana L'vovna
AU - Skundin, Alexandr Mordukhaevich
PY - 2026
DA - 2026/09/23
PB - Mendeleev Communications
ER -
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@article{2026_Gavrilin,
author = {Iliya Mikhailovich Gavrilin and Yulia O Kudryashova and Sergey Andreevich Li and Ivan S. Marinkin and Il'ya Ivanovich Tsiniaikin and Tat'yana L'vovna Kulova and Alexandr Mordukhaevich Skundin},
title = {Lithiophilic coating based on Ge nanowires for enhancement of the Coulombic efficiency of lithium deposition/dissolution},
journal = {Mendeleev Communications},
year = {2026},
publisher = {Mendeleev Communications},
month = {Sep},
url = {https://mendcomm.colab.ws/publications/10.71267/mencom.8072},
doi = {10.71267/mencom.8072}
}
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Keywords

anode-free lithium battery
aprotic electrolyte
Coulombic efficiency
Ge nanowires
Li dendrites

Abstract

The cycle life of anode-free lithium batteries is limited by low Coulombic efficiency (CE) of Li deposition/dissolution on the negative current collector due to dendrite growth and poor lithiophilicity of conventional Ti. Here, we applied a highly lithiophilic coating of ~2.5 μm thick germanium nanowires (NWs) onto a Ti current collector, which reduced the Li nucleation overpotential from 109 to 22 mV and increased the initial CE from ~70% (bare Ti) to 97%. Over 60 cycles, the CE remained stable at 90--92%, demonstrating that Ge NW coatings effectively enhanced the cycle stability of anode-free lithium batteries.

Funders

Russian Science Foundation
25-79-10341

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