Atomic layer deposition of crystalline epitaxial MoS₂ nanowall networks exhibiting superior performance in thin-film rechargeable Na-ion batteries

Nanowall network of MoS₂ grown by atomic layer deposition shows single crystalline nature and epitaxial relationship with <italic>c</italic>-sapphire. The nanowall network grown directly on current collector exhibits high capacity, remarkable stability, cyclability and high rate capability over a wide range of operating currents.