杨树叶衍生生物质碳的制备及其电化学性能研究

Study on the preparation and electrochemical properties of biochar derived from poplar leaves

以廉价的KOH为活化剂,将杨树叶前驱体转化为有序的多孔碳(HPC)。用HPC组装的对称超级电容器表现出优异的电化学性能。HPC-4-500的比电容非常高,可以达到305 F/g,拥有着良好的倍率性能。结果表明,HPC电极具有优异的电化学性能。因此,HPC将是一种适用于超级电容器应用的廉价活性材料。

In this paper,a continuous carbonization KOH activation method was studied to prepare and extract porous biomass carbon from natural product poplar leaves.The precursor of poplar leaves was converted into ordered porous carbon with cheap KOH as activator.Symmetrical supercapacitors assembled with HPC provide excellent capacitance,excellent energy density and long cycle life.The specific capacitance of HPC-4-500 is very high,reaching 305 F/g,with good multiplying power.The results show that HPC electrode has excellent electrochemical performance.Therefore,HPC will be a cheap active material suitable for supercapacitor applications.