Graphene-cladding manganese dioxide combination electrode material and method for producing same
A technology of graphene coating and manganese dioxide, which is applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, circuits, etc., can solve problems such as unsatisfactory cycle performance, easy agglomeration, and affecting performance, so as to increase cycle Stability, prevent agglomeration, increase the effect of specific capacity
Inactive Publication Date: 2012-10-03
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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A graphene-cladding manganese dioxide combination electrode material and a method for producing the same, belonging to the technical field of electronic functional materials, the graphene-cladding manganese dioxide combination electrode material comprises nano manganese dioxide particles and graphene cladded with manganese dioxide particles, wherein the mass ratio of graphene and the nano manganese dioxide particles is 1:(1.25-10). The method comprises the following steps: preparing the nano manganese dioxide particles and graphite oxide respectively, and mixing and ultrasonically dispersing to obtain the graphene-cladding manganese dioxide dispersing agent, finally, reducing the graphite oxide to obtain the graphene-cladding manganese dioxide combination electrode material. The graphene is used to clad the manganese dioxide, so the electrical conductivity and cycling stability of the electrode material parts can be improved; and meanwhile, the existence of the manganese dioxide particles also effectively prevents the graphene from reunion, so the specific capacity of the electrode material of a supercapacitor is obviously increased. The method has a simple technology, reaction products are easy to control, the purity is high, and the produced combination electrode material is suitable for producing an electrode plate of the supercapacitor.
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