Biomass derived activated carbon with 3D connected architecture for rechargeable lithium − sulfur batteries

- 3D structured activated carbon foam (ACF) was derived from biomass−pomelo peels
- The ACF was used as binder free cathode supporter for rechargeable Li−S batteries
- The cathode with 60 wt% sulfur delivered a reversible capacity of > 1000 mAh g−1
- Capacity > 700mAh g−1 at 2C rate was exhibit for the cathode
- High porosity and 3D structure of theACFcontribute to its excellent performance