Waste-honeycomb-derived in situ N-doped Hierarchical porous carbon as sulfur host in lithium–sulfur battery

Waste honeycomb derived porous carbon with a high specific surface area of 1683.6 m 2 g −1 are prepared via a facile simultaneous activation/carbonization. The corresponding porous carbon/sulfur composite cathode exhibits a durable stable performance up to 500 cycles at 1 C.