Electrochemical properties of Y doped Mn3O4/graphene composites
CHEN Le1, DONG Li-min1,2, JIN Xin-xin1, FU Hai-yang1, LI Xiao-yue1
1. School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China;
2. Key Laboratory of Engineering Dielectrics and Its Application(Ministry of Education), Harbin University of Science and Technology, Harbin 150080, China
Abstract：Mn3O4 for supercapacitors was prepared by hydrothermal method at different reaction temperature and certain reaction time. Y doped and composite graphene were realized. The morph-ology, structure and electrochemical properties of the samples were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical workstation. The standard PDF cards 89-4837 are identical and the single phase Mn3O4 belongs to tetragonal system. The space group is I41/amd (No. 141). The prepared Mn3O4 is rod like particle. The specific capacitance of Y-Mn3O4 and Y-Mn3O4/graphene composites can reach 89 F·g-1 and 267 F·g-1 when Y content is 5%. The cyclic voltammetry curves of Y-Mn3O4/graphene composites are rectangular, indicating that Y doped and graphene loading synergistically improve the electrochemical performance of Mn3O4.
陈乐, 董丽敏, 金鑫鑫, 付海洋, 李晓约. Y掺杂Mn3O4/石墨烯复合材料的电化学性能[J]. 材料工程, 2020, 48(2): 53-58.
CHEN Le, DONG Li-min, JIN Xin-xin, FU Hai-yang, LI Xiao-yue. Electrochemical properties of Y doped Mn3O4/graphene composites. Journal of Materials Engineering, 2020, 48(2): 53-58.
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