Magnesiothermic Reduction‐Enabled Synthesis of Si−Ge Alloy Nanoparticles with a Canyon‐Like Surface Structure for Li−Ion Battery

A new strategy is proposed to synthesize a Si−Ge alloy nanomaterial for a Li‐ion battery anode. Magnesiothermic reduction of the SiO 2 −GeO 2 composite parent material could provide a nanostructured Si−Ge alloy material with unique canyon‐like surface porosity. The nanostructure of Si−Ge alloys could be intentionally controlled and the resulting canyon‐like porous Si−Ge nanoparticle could be successfully utilized as an anode material, achieving satisfactory cell performance. The proposed synthetic approach can potentially scale‐up the production of Si−Ge alloy nanomaterial.