Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
College of Chemistry and Environmental Science, Lanzhou City University, Lanzhou 730070, China.
Bioresour Technol. 2015 Dec;197:137-42. doi: 10.1016/j.biortech.2015.07.100. Epub 2015 Aug 1.
High capacitance property and low cost are the pivotal requirements for practical application of supercapacitor. In this paper, a low cost and high capacitance property nitrogen-doped porous carbon with high specific capacitance is prepared. The as-prepared nitrogen-doped porous carbon employing potato waste residue (PWR) as the carbon source, zinc chloride (ZnCl2) as the activating agent and melamine as nitrogen doping agent. The morphology and structure of the carbon materials are studied by scanning electron microscopy (SEM), N2 adsorption/desorption, X-ray diffraction (XRD) and Raman spectra. The surface area of the nitrogen-doped carbon which prepared under 700°C is found to be 1052m(2)/g, and the specific capacitance as high as 255Fg(-1) in 2M KOH electrolyte is obtained utilize the carbon as electrode materials. The electrode materials also show excellent cyclability with 93.7% coulombic efficiency at 5Ag(-1) current density of for 5000cycles.
高电容性能和低成本是超级电容器实际应用的关键要求。本文制备了一种低成本、高电容特性的氮掺杂多孔碳，具有高比电容。所制备的氮掺杂多孔碳以马铃薯废渣（PWR）为碳源，氯化锌（ZnCl2）为活化剂，三聚氰胺为氮掺杂剂。通过扫描电子显微镜（SEM）、N2 吸附/解吸、X 射线衍射（XRD）和拉曼光谱研究了碳材料的形貌和结构。在 700°C 下制备的氮掺杂碳的比表面积为 1052m(2)/g，在 2M KOH 电解质中作为电极材料时的比电容高达 255Fg(-1)。该电极材料还表现出优异的循环稳定性，在 5Ag(-1)电流密度下循环 5000 次后，库仑效率为 93.7%。
