Preparation of N/O/S Self-doped Porous Carbon Derived from Platycladus orientalis Leaves and Its Electrochemical Properties
TAN Luoli
CHEN Yang
TANG Qin
SHEN Changjian
LU Shoufa
CHEN Xianyong
Abstract：To prepare the preparation of low-cost supercapacitor electrode materials,N/O/S self-doped foamy hierarchical porous carbon(denoted as POLC-650-0.5)with high specific surface area(1001.4m2/g)and high heteroatom content(N:2.8%,O:12.7%,S:0.4%)was directly synthesized in one step using discarded Platycladus orientalis leaves as raw material.The naturally contained calcium oxalate in the leaves was used as an in situ hard template and endogenous activator,while a small amount of KHCO3 was introduced as an external green activator.The synthesis was conducted under mild conditions with a mass ratio of KHCO3 to Platycladus orientalis leaves of 0.5∶1.0 and an activation temperature of 650℃.Its electrochemical behavior in a 2 mol/L Na2 SO4 electrolyte system was tested.The results indicated that the symmetric supercapacitor assembled with Platycladus orientalis leaves-derived carbon POLC-650-0.5 delivered a specific capacitance of 133.0 F/g at a current density of 0.5 A/g,and retained 84.6%of its initial capacitance after 10000 charge-discharge cycles at a current density of 5 A/g,demonstrating excellent energy storage performance.This study provided a feasible route for the high-value utilization of waste plant resources and the cost-effective production of high-performance porous capacitive carbon for supercapacitors.
Keywords：biomass wasteporous carbonactivationN/O/S self-dopingsupercapacitor
Publication Date：2026-03-20
Online Publishing Date：2026-03-26(First online date of this platform, not the publication date of the document)
Pages：8( 15-21,48 )