Nitrogen-doped porous carbon derived from biomass waste for high-performance supercapacitor
Nitrogen-doped porous carbon derived from biomass waste for high-performance supercapacitor
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DOI：
10.1016/j.biortech.2015.07.100
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发表时间：
2015-12-01
影响因子：
11.4
通讯作者：
Lei, Ziqiang
中科院分区：
文献类型：
--
作者：
Ma, Guofu;Yang, Qian;Lei, Ziqiang
高电容性能和低成本是超级电容器实用化的关键要求。本文制备了一种低成本、高电容性能的高比电容氮掺杂多孔碳材料。以马铃薯废渣（PWR）为碳源，氯化锌（ZnCl 2）为活化剂，三聚氰胺为氮掺杂剂，制备了氮掺杂多孔炭。通过扫描电镜（SEM）、氮气吸附/脱附、X射线衍射（XRD）和拉曼光谱等手段对炭材料的形貌和结构进行了研究。在700 ℃下制备的氮掺杂碳的比表面积为1052 m2/g，在2 M KOH电解液中作为电极材料获得了高达255 Fg（1）的比电容。电极材料还显示出优异的循环性能，在5A g（1）电流密度下循环5000次，库仑效率为93.7%。(C)2015爱思唯尔有限公司版权所有。
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), N-2 adsorption/desorption, X-ray diffraction (XRD) and Raman spectra. The surface area of the nitrogen-doped carbon which prepared under 700 degrees C is found to be 1052 m(2)/g, and the specific capacitance as high as 255 F g (1) in 2 M KOH electrolyte is obtained utilize the carbon as electrode materials. The electrode materials also show excellent cyclability with 93.7% coulombic efficiency at 5 A g (1) current density of for 5000 cycles. (C) 2015 Elsevier Ltd. All rights reserved.