Graphene-Oxide-Assisted Synthesis of GaN Nanosheets as a New Anode Material for Lithium-Ion Battery

As the most-studied III-nitride, theoretical researches have predicted the presence of gallium nitride (GaN) nanosheets (NSs). Herein, a facile synthesis approach is reported to prepare GaN NSs using graphene oxide (GO) as sacrificial template. As a new anode material of Li-ion battery (LIBs), GaN NSs anodes deliver the reversible discharge capacity above 600 mA h g^-1 at 1.0 A g^-1 after 1000 cycles, and excellent rate performance at current rates from 0.1 to 10 A g^-1. These results not only extend the family of 2D materials but also facilitate their use in energy storage and other applications.