Freestanding carbon fiber cloth/sulfur composites for flexible room-temperature sodium-sulfur batteries

Carbon fiber cloth/sulfur (CFC/S) composites were prepared by loading sulfur in the carbon fiber cloth (CFC) that was obtained by carbonizing the renewable cotton cloth. The CFC/S composites are the excellent cathodes of room-temperature sodium-sulfur (RT Na-S) batteries due to their interconnected network and high electrolyte uptake. Soft-packaged RT Na-S batteries based on CFC/S composites can remain stable electrochemical properties at bending state.264