Preparation of Nitrogen Doped Lignin derived Porous Carbon for Supercapacitors

摘要

We show the use of lignin as a carbon source to prepare electrode materials using nitrogen-doped,nitrogen doping introduces a nitrogen functional group to increase the hydrophilicity and active sites ofthe electrode material. Due to its high specific surface area (870.2 m2 g-1) and porosity, theintroduction of functional groups can increase the charge transfer rate, Ultimately, the electrode has ahigh specific capacitance (320.4 F g-1 at a current density of 0.5 A g-1), excellent rate performance andcycle stability (94.1% specific capacitance retention after 5000 cycles). The results of the abovestudies indicate that a low-cost, high-performance supercapacitor can be fabricated using abundantwaste lignin.