US 10,832,872 B2Granted

Method for preparing polyaniline/ruthenium oxide/tin dioxide composite electrode material

AssigneeGuizhou Institute of Technology

InventorsXiang Li, Yongmei Luo, Fanghai Lu, Yingfen Li

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Abstract

The present invention provides a method for preparing a polyaniline/RuO2/SnO2 composite electrode material, including: sputtering a SnO2 film onto a tantalum substrate by a magnetron sputtering method, to form a SnO2 layer; preparing porous-structured RuO2 nanoparticles with a uniform pore size distribution (10-15 nm) by a template method; and embedding polyaniline into the RuO2 nanoparticle matrix by a electrodeposition method, to finally obtain a multilayer-structured polyaniline/RuO2/SnO2 composite electrode material with a specific capacitance value of 680-702 F·g−1 and an excellent cycling charge-discharge performance after it is assembled into an electrochemical capacitor.

Claims11

Dependent claims

A method for preparing a polyaniline/RuO2/SnO2 composite electrode material, comprising the following steps:

depositing a SnO2 target material onto a surface of a tantalum substrate by a magnetron sputtering method, to form a SnO2 layer on the surface of the tantalum substrate;
mixing a RuCl3 solution, a porous silicate molecular sieve, and NH4HCO3 to conduct a synthesis reaction, and activating a resultant product to obtain RuO2 nanoparticles;
mixing the RuO2 nanoparticles with conductive carbon black, polyvinylidene fluoride and nitromethylpyrrolidone, and coating a resultant mixed slurry onto a surface of the SnO2 layer and curing to form a RuO2 intermediate active layer;
and
electro-depositing polyaniline onto a surface of the RuO2 intermediate active layer to obtain the polyaniline/RuO2/SnO2 composite electrode material.

2 more elements

Dependencies are inferred from the claim text.