Synthesis of amorphous MnSiO3/graphene oxide with excellent electrochemical performance as supercapacitor electrode

被引：33
作者：
Cheng, Yan [1 ]
Zhang, Yifu [1 ]
Wang, Qiushi [1 ]
Meng, Changgong [1 ]
机构：
[1] Dalian Univ Technol, Sch Chem, Dalian 116024, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2019年 / 562卷
基金：
中国国家自然科学基金;
关键词：
MnSiO3; Amorphous materials; Graphene oxide (GO); Composites; Supercapacitor; Electrochemical property; REDUCED GRAPHENE OXIDE; BATTERY-TYPE ELECTRODE; HYDROTHERMAL SYNTHESIS; HOLLOW SPHERES; HIERARCHICAL SPHERES; ACTIVATED CARBON; CAPACITANCE; COMPOSITE; MNO2; FABRICATION;
D O I：
10.1016/j.colsurfa.2018.11.011
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Manganese silicate/graphene oxide (MnSiO3/GO) composite was successfully synthesized using GO, manganese chloride and sodium silicate through a facile precipitation method. The results show MnSiO3 nanoparticles are closely dispersed on GO sheets, suggesting the formation of a united composite. This composite exhibits a large specific surface area of 161 m(2) g(-1) and a pore volume of 0.8728 cm(3) g(-1). MnSiO3/GO composite displays high electrical conductivity and fast ion and electron transport, which can improve the electrochemical performance of MnSiO3. To be specific, MnSiO3/GO composite delivers the specific capacitance as high as 262.5 F g(-1) at 0.5 A g(-1) in 1 M Na2SO4 electrolyte, which is higher than that of MnSiO3 (168.8 F g(-1)) and GO (4.6 F g(-1)). This finding proves that MnSiO3/GO composite can be considered as a promising candidate material applied to high-performance energy storage device.
引用
收藏
页码：93 / 100
页数：8
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