University of Limerick
Ahad_2023_Cu.pdf (10.08 MB)

Cu current collector with binder-free lithiophilic nanowire coating for high energy density lithium metal batteries

Download (10.08 MB)

Despite significant efforts to fabricate high energy density (ED) lithium (Li) metal anodes, problems such as dendrite formation and the need for excess Li (leading to low N/P ratios) have hampered Li metal battery (LMB) development. Here, the use of germanium (Ge) nanowires (NWs) directly grown on copper (Cu) substrates (Cu-Ge) to induce lithiophilicity and subsequently guide Li ions for uniform Li metal deposition/stripping during electrochemical cycling is reported. The NW morphology along with the formation of the Li15Ge4 phase promotes uniform Li-ion flux and fast charge kinetic, resulting in the Cu-Ge substrate demonstrating low nucleation overpotentials of 10 mV (four times lower than planar Cu) and high Columbic efficiency (CE) efficiency during Li plating/stripping. Within a full-cell configuration, the Cu-Ge@Li – NMC cell delivered a 63.6% weight reduction at the anode level compared to a standard graphite-based anode, with impressive capacity retention and average CE of over 86.5% and 99.2% respectively. The Cu-Ge anodes are also paired with high specific capacity sulfur (S) cathodes, further demonstrating the benefits of developing surface-modified lithiophilic Cu current collectors, which can easily be integrated at the industrial scale.


Silicon Anodes through Nanostructural Development (SAND)

Science Foundation Ireland

Find out more...



Small 2023, 2207902


Wiley and Sons Ltd

Other Funding information

Open access funding provided by IReL

Also affiliated with

  • Bernal Institute

Department or School

  • Chemical Sciences

Usage metrics

    University of Limerick


    Ref. manager