From Jackfruit Rags to Hierarchical Porous N-Doped Carbon:A High-Performance Anode Material for Sodium-Ion Batteries

摘要

Renewable biomass-derived carbon materials have attracted increasing research attention as promising electrode materials for electrochemical energy storage devices,such as sodium-ion batteries (SIBs),due to their outstanding electrical conductivity,hierarchical porous structure,intrinsic heteroatom doping,and environmental friendliness.Here,we investigate the potential of hierarchical N-doped porous carbon (NPC) derived from jackfruit rags through a facile pyrolysis as an anode material for SIBs.The cycling performance of NPC at 1 A/g for 2000 cycles featured a stable reversible capacity of 122.3 mA·h/g with an outstanding capacity retention of 99.1％.These excellent electrochemical properties can be attributed to the unique structure of NPC;it features hierarchical porosity with abundant carbon edge defects and large specific surface areas.These results illuminate the potential application of jackfruit rags-derived porous carbon in SIBs.