Mechanochemical Synthesis and Anode Properties of SnO‐Based Amorphous Materials

Amorphous materials in the system , with or without the addition of , were synthesized by mechanical milling treatment of starting oxides in a dry atmosphere at room temperature. These materials, obtained as fine powders, worked as an anode for a lithium‐ion secondary battery using a conventional liquid electrolyte. The first discharge capacities of the anode of materials obtained by mechanical milling were more than at a constant current of . The capacity for added materials was comparable or slightly larger than that for the materials without the addition of . Charge‐discharge curves obtained using these materials were similar to those for the glassy powders in the system prepared by a melt quenching procedure. SnO‐based amorphous materials obtained by mechanochemical synthesis are promising candidates as high‐capacity anode materials for lithium‐ion secondary batteries.