Hollow Carbon Microspheres/MnO_2 Nanosheets Composites:Hydrothermal Synthesis and Electrochemical Behaviors

作     者：Hui-li Fan Fen Ran Xuan-xuan Zhang Hai-ming Song Xiao-qin Niu Ling-bin Kong Long Kang 

作者机构：School of Materials Science and Engineering Lanzhou University of Technology State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2015年第7卷第1期

页      面：59-67页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (51203071, 51363014 and 51362018) China Postdoctoral Science Foundation (2014M552509) the Key Project of Chinese Ministry of Education (212183) the Natural Science Funds for Distinguished Young Scholars of Gansu Province (1111RJDA012) 

主　　题：Manganese oxide Hollow carbon microspheres Composite electrode Supercapacitor 

摘      要：This article reported the electrochemical behaviors of a novel hollow carbon microspheres/manganese dioxide nanosheets(micro-HC/nano-MnO2) composite prepared by an in situ self-limiting deposition method under hydrothermal condition. The results of scanning electron microscopy reveal that MnO2 nanosheets homogeneously grow onto the surface of micro-HC to form a loose-packed microstructure. The quantity of MnO2 required in the electrode layer has thereby been reduced significantly, and higher specific capacitances have been achieved. The micro-HC/nano-MnO2 electrode presents a high capacitance of 239.0 F g-1 at a current density of 5 m A cm-2, which is a strong promise for high-rate electrochemical capacitive energy storage applications.