Synthesis of Graphene with Manganese Compounds viaa Hydrothermal Method and Their Super-Capacitances
1. Northeast Petroleum University at Qinhuangdao, Qinhuangdao 066004, China;
2. College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
Abstract：The hydrothermal method was used to study the reaction of citric acid with KMnO4 at relatively low temperatures at the presence of graphene. The influence of molar ratio of KMnO4 to citric acid, morphologies and electrochemical performance of compounds were investigated. The structure and the morphology of samples were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The electrochemical performance of the samples was also tested. The results showed that the MnOOH/ graphene composite with the nanorod structure reacted from the KMnO4 to citric ratio of 8:3 had the best super-capacitance. The specific capacitance could reach 267.7 F/g at a current density of 0.5 A/g with excellent cycle stability.
Liu Tingting1,2. Synthesis of Graphene with Manganese Compounds viaa Hydrothermal Method and Their Super-Capacitances[J]. 化学反应工程与工艺, 2016, 32(2): 170-175.
