【摘要】 将衰老叶片用H₂SO₄进行水热氧化得到氧化水合碳前驱体，前驱体经烘干研磨在KOH存在下进行碳化得到生物质纳米碳膜（LS-OCM）,通过FT-IR,XRD、TEM、SEM、AFM、XPS及N₂吸附-脱附等测试手段对其材料组成和微观形貌进行表征。TEM、SEM及N₂吸附-脱附分析显示，制得生物质纳米碳膜材料（LS-OCM）既保留叶片原有的叶脉结构又形成丰富多级的孔道结构，比表面积约为450.7 m²/g,孔径分布较窄，平均孔径为3.8 nm; AFM分析显示，LS-OCM类似二维纳米膜，片层平均厚度在1.6 nm左右；XPS及XRD分析表明，该材料中C主要以C=C形似存在，为类石墨烯碳膜。电化学性能分析表明，在电流密度为0.25 A/g下，LS-OCM比电容为262.58 F/g,循环100圈，比电容仍然可达150.8 F/g,表明材料具有良好的稳定性。更多还原

【Abstract】 The biomass carbon film（LS-OCM）was obtained by carbonization of the hydrated carbon precursor in the presence of potassium hydroxide.Oxidized hydrated carbon（precursor）was prepared using H₂SO₄ as oxidants and aging leaves as raw materials by hydrothermal process.The composition and microstructure were characterized by Fourier Transform Infrared（FT-IR）,X-ray diffraction（XRD）,Transmission electron microscope（TEM）,Scanning electron microscope（SEM）,Atomic force microscope（AFM）,X-ray photoelectron spectroscopy（XPS）and N₂ adsorption-desorption.The biomass carbon material（LS-OCM）retains some original microscopic pores of the leaf and forms new rich multistage pores by the TEM,SEM and N₂ adsorption-desorption.Its specific surface area reaches 450.7 m²/g, with narrow pore diameter distribution and an average pore size of 3.8 nm.The AFM image shows that LS-OCM presents the two-dimensional nano film constructure with the average thickness of about 1.6nm.XPS and XRD analysis show that the the valence form of carbon of the LS-OCM materal is mainly C=C,which is similar to biomass graphene.The electrochemical performance analysis shows that the specific capacity of LS-OCM is 262.58 F/g at the current density of 0.25 A/g.After 100 cycles, the specific capacity can still reach 150.8 F/g, which shows that the material has good stability.更多还原