莴苣叶基碳材料制备及其电化学性能

Preparation and electrochemical performance of carbon material derived from lettuce leaves

生物质衍生的多孔碳材料来源于农村生产活动的废弃物以及城市垃圾,具有资源丰富、可再生、价格低廉等优点,是一种重要的超级电容器领域的电极材料.选用莴苣叶作为碳源,通过碳化、活化等处理,制备了具有丰富孔隙结构的生物质衍生多孔碳材料.在三电极系统中测试其超级电容器性能,在0.5 A·g^(-1)电流密度下的电容值达到196.5 F·g^(-1),当电流密度为10 A·g^(-1)时,其比电容仍保持120 F·g^(-1).该材料具有较高的比电容及较好的倍率特性,在超级电容器上具有良好的应用前景.

The porous carbon material derived from biomass is came from the waste of rural production activities and urban waste.It has the advantages of abundant resources,renewable and low price,and play an important part in the field of supercapacitors as electrode material.Selected lettuce leaves as carbon source and prepared a biomass derived porous carbon material with abundant pore structure through carbonization and activation.The specific capacitance reached 196.5 F·g^(-1) at 0.5 A·g^(-1) current density,and the specific capacitance remained 120 F·g^(-1) at 10 A·g^(-1) current density in three-electrodes test system.The material has higher specific capacitance and better magnification performance and also has a good application prospect in supercapacitors.