镍掺杂花状纳米碳片的制备及其在超级电容器中的应用(英文)  

Synthesis of Ni-doped Flower-Like Carbon Nanosheet Aggregations for Supercapacitors

作　　者：易观贵[1] 肖勇[1] 谢春林[1] 莫珊珊[1] 贺文启[1] 赵率[1] 刘应亮[1] 袁定胜[1] 黄浪欢[1] 谭绍早[1] 

机构地区：[1]暨南大学化学系,纳米化学研究所,广州510632

出　　处：《无机化学学报》2011年第4期764-770,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家-广东联合基金(No.U0734005);国家自然科学青年基金(No.20906037);中央高校基本科研业务费专项资金(No.21610102)资助项目

摘　　要：本文通过溶剂热法"一锅"制备了镍掺杂的花状纳米碳片(Ni/FCNAs)。借助X射线衍射仪(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对该复合材料的表面形貌和结构进行了分析。循环伏安和恒流充/放电测试结果表明,Ni/FCNAs具有较大的比电容值且电化学稳定性良好。在电流密度为0.1 A.g-1时,Ni/FCNAs电极的比电容可达176 F.g-1。本文同时也提出了Ni/FCNAs可能的形成机理。Ni-doped flower-like carbon nanosheet aggregations（Ni/FCNAs） were synthesized via a one-pot solvothermal method followed by a subsequent calcination process at 900 ℃ in nitrogen atmosphere.The surface morphologies and structures of composites were examined by scanning electron microscope（SEM）,transmission electron microscope（TEM） and X-ray diffraction（XRD）.Cyclic voltammetry and galvanostatic charge/discharge experiments were adopted to investigate their electrochemical behaviors.The results show that the doped nickel particles could enhance both specific capacitance and electrochemical stability.The Ni/FCNAs show large specific capacitance up to 176 F·g-1 with the current density of 0.1 A·g-1.The possible formation mechanism of Ni/FCNAs has also been proposed on the basis of experimental results.

关 键 词：镍掺杂 纳米碳片 溶剂热 超级电容器 

分 类 号：TB333[一般工业技术—材料科学与工程] TB383