Rechargeable magnesium batteries promise high energy density but are hindered by sluggish Mg diffusion and poor electrolyte compatibility in oxide cathodes. Here, an amorphous Mg–Li–Ti–Mo oxide with high free volume enables reversible Mg insertion at room temperature, delivering 150 mAh g−1 and long cycle life.
- Tomoya Kawaguchi
- Hikari Sakurai
- Tetsu Ichitsubo
