Enhanced Performance by Enlarged Nano-pores of Holly Leaf-derived Lamellar Carbon for Sodium-ion Battery Anode

Abstract

Lamellar hard carbon derived from holly leaf with enlarged pores of tiny graphite-like domains and meso-pores was prepared by hydrothermal followed high temperature pyrolysis process. Benefiting from the enlarged nano-pores of tiny graphite-like domains and the thin sheet structure with meso-pores, the derived carbon delivered a high reversible capacity of 318 mAh g-1 at a current rate of 20 mA g-1 and excellent rate capability as the anode of sodium-ion battery. And the hydrothermal followed high temperature pyrolysis method was also confirmed an effective approach for betula platyphylla and sophora japonica leaf as precursor respectively to synthesis hard carbon of lamellar structure with enlarged nano-pores of tiny graphite-like domains.