Hierarchical N/S‐codoped carbon microspheres with expanded interlayer distance and enhanced conductivity are fabricated facilely from cellulose/polyaniline composite in a “green” and low‐cost route. This material achieves a high reversible capacity of ≈280 mA h g⁻¹at 30 mA g⁻¹and superior rate performance of ≈130 mA h g⁻¹at 10 A g⁻¹, and ultralong cycle life of more than 3000 cycles as an anode material for sodium‐ion batteries, holding great promise for economic large‐scale energy storage.

文章链接：https://onlinelibrary.wiley.com/doi/abs/10.1002/aenm.201501929