Chen Hao, Zhou Shuxue, Wu Limin
Department of Materials Science and Advanced Materials Laboratory, Fudan University , Shanghai 20043, PR China.
ACS Appl Mater Interfaces. 2014 Jun 11;6(11):8621-30. doi: 10.1021/am5014375. Epub 2014 May 13.
This paper reports the first nickel hydroxide-manganese dioxide-reduced graphene oxide (Ni(OH)2-MnO2-RGO) ternary hybrid sphere powders as supercapacitor electrode materials. Due to the abundant porous nanostructure, relatively high specific surface area, well-defined spherical morphology, and the synergetic effect of Ni(OH)2, MnO2, and RGO, the electrodes with the as-obtained Ni(OH)2-MnO2-RGO ternary hybrid spheres as active materials exhibited significantly enhanced specific capacitance (1985 F·g(-1)) and energy density (54.0 Wh·kg(-1)), based on the total mass of active materials. In addition, the Ni(OH)2-MnO2-RGO hybrid spheres-based asymmetric supercapacitor also showed satisfying energy density and electrochemical cycling stability.
本文报道了首例以氢氧化镍-二氧化锰-还原氧化石墨烯（Ni(OH)₂-MnO₂-RGO）三元杂化球粉作为超级电容器电极材料。由于具有丰富的多孔纳米结构、相对较高的比表面积、明确的球形形态以及Ni(OH)₂、MnO₂和RGO的协同效应，以所制备的Ni(OH)₂-MnO₂-RGO三元杂化球作为活性材料的电极表现出显著增强的比电容（1985 F·g⁻¹）和能量密度（54.0 Wh·kg⁻¹），这是基于活性材料的总质量。此外，基于Ni(OH)₂-MnO₂-RGO杂化球的不对称超级电容器也表现出令人满意的能量密度和电化学循环稳定性。
