柚子皮衍生的分级多孔碳作为高性能超级电容器的电极材料(英文)  

Pomelo Peel Derived Hierarchical Porous Carbon as Electrode Materials for High-Performance Supercapacitor

作　　者：武中钰 范蕾 陶友荣[1] 王伟 吴兴才[1] 赵健伟[2] WU Zhong-Yu;FAN Lei;TAO You-Rong;WANG Wei;WUXing-Cai;ZHAO Jian-Wei(Key Laboratory of Mesoscopic Chemistry of MOE,State Key Laboratory of Coordination Chemistry,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China;School of Materials and Textile Engineering,Jiaxing University,Jiaxing,Zhejiang 314001,China)

机构地区：[1]南京大学化学化工学院,介观化学教育部重点实验室,南京大学配位化学国家重点实验室,南京210023 [2]嘉兴学院材料与纺织工程学院,嘉兴314001

出　　处：《无机化学学报》2018年第7期1249-1260,共12页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21673108)资助项目

摘　　要：使用CTAB作为软模板,水热处理柚子皮,再以碳化和KOH活化过程得到了分级多孔碳(HPC),这种分级多孔碳材料的比表面积高达1 813 m^2·g^(-1),相比于没有水热步骤制备的多孔碳(PC),拥有更加丰富的介孔结构和更大的比表面积。XPS分析结果表明HPC的氧掺杂量更高,会比PC贡献更大的赝电容。三电极测试体系中,HPC的比电容达到285 F·g^(-1)(0.5 A·g^(-1),1 mol·L^(-1)KOH)。同时,组装的两电极对称超级电容器拥有很好的倍率性能,循环12 000次充放电后,比电容依旧保留99%。HPC拥有这样优异的性能归结于较大的比表面积,高氧掺杂量和合理的孔径分布的协同作用。We propose a novel method using cetyltrimethyl ammonium bromide（CTAB） as soft template followed by successive graphitization and activation of pomelo peel to get a new biomass-derived hierarchical porous carbon（HPC）. The as-obtained HPC possesses a high specific area of 1 813 m^2·g^（-1） with abundant mesopores structure, which is larger than that of 1 184 m2·g^（-1） for the contrast of the porous carbon（PC） prepared without CTAB. X-ray photoelectron spectroscopy（XPS） analysis presents the oxygen doped amount for HPC is larger than that for PC, which could arise a high pseudocapacitance. In addition, the HPC also shows better electrochemical performance than PC, when utilized as an electrode material in supercapacitor. At a current density of 0.5 A·g^（-1）,the specific capacitance of HPC is up to 285 F·g^（-1） in 1 mol·L^（-1） KOH solution. Further investigation based on two-electrode cell suggests good performance with high rate capability and relative stability. Such excellent performance should be attributed to the synergistic effect of large specific surface area, high O-doping content and reasonable pore-size distribution.

关 键 词：超级电容器 生物炭 多孔碳 软模板法 能源存储 

分 类 号：O646[理学—物理化学]