Reduced graphene Oxide-MnO2 hollow sphere hybrid nanostructures as high-performance electrochemical capacitors
Reduced graphene Oxide-MnO2 hollow sphere hybrid nanostructures as high-performance electrochemical capacitors
复制标题
DOI：
10.1039/c2jm35054h
复制
发表时间：
2012-01-01
影响因子：
--
通讯作者：
Wu, Limin
中科院分区：
文献类型：
--
作者：
Chen, Hao;Zhou, Shuxue;Wu, Limin
本文介绍了第一次成功的制备还原氧化石墨烯（RGO）-二氧化锰空心球（HS）杂化电极材料，通过基于溶液的超声共组装方法。这些MnO 2空心球的多孔结构和活性物质的良好分散性使得所制备的RGO-MnO 2 HS混合电极具有优异的比电容和能量密度，其分别可达到578 F g（-1）和69.8 W h kg（-1）。这些值显著大于大多数报道的基于石墨烯-MnO 2的混合电化学电容器的值。这种溶液处理方法也可用于石墨烯与其他金属氧化物的杂化，以制造高性能电化学电容器。
This paper presents the first successful fabrication of reduced graphene oxide (RGO)-MnO2 hollow sphere (HS) hybrid electrode materials through a solution-based ultrasonic co-assembly method. The porous structure of these MnO2 hollow spheres and the excellent dispersion of active materials give the as-fabricated RGO-MnO2 HS hybrid electrodes excellent specific capacitance and energy density, which can reach up to 578 F g(-1) and 69.8 W h kg(-1), respectively. These values are considerably larger than those of most reported graphene-MnO2 based hybrid electrochemical capacitors. This solution-processed method can also be used for the hybridization of graphene with other metal oxides in the fabrication of high-performance electrochemical capacitors.