Double-electrode-layer capacitor electrode material and manufacturing method thereof

Abstract

Disclosed are a double-electrode-layer capacitor electrode material and a manufacturing method thereof. The double-electrode-layer capacitor electrode material is a high-energy tantalum hybrid capacitor cathode piece which is a composite cathode piece with a matrix of tantalum-based ruthenium dioxide (RuO2); the composite cathode piece comprises a basic tantalum piece, and a multi-metal oxide layer formed by blending ruthenium oxide, tantalum oxide and other metal oxides is covered on a surface of the tantalum piece; the multi-metal oxide layer is formed by blending the ruthenium oxide, the tantalum oxide and more than one of activated carbons, copper oxide, potassium oxide and manganese oxide, and subjected to chemical dipping processing to be formed.

Description

technical field [0001] The present invention relates to a supercapacitor, that is, an electrode material of an electric double layer capacitor and a preparation method thereof, in particular to a RuO composite material composed of ruthenium oxide, activated carbon, tantalum oxide and a tantalum base. 2 -Ta 2 o 5 The invention discloses a / Ta electrode material and a preparation method thereof, belonging to the technical field of electronics. Background technique [0002] High-energy tantalum hybrid capacitors are ultra-large-capacity hybrid capacitors composed of tantalum electrolytic capacitors and electric double-layer capacitors. Specifically, they are composed of sintered tantalum anode cores, tantalum pentoxide (Ta 2 o 5） Medium, sulfuric acid solution electrolyte and tantalum-based ruthenium dioxide (RuO 2 ) cathode sheet composition, sulfuric acid solution electrolyte and tantalum-based ruthenium dioxide (RuO 2 ) The cathode sheet constitutes the capacitor cathod...

AI Technical Summary

Problems solved by technology

However, this patent is to use the method of brushing to mix the alcohol solution of ruthenium trichloride hydrate, stannous chloride, tantalum pentachloride and butyl titanate evenly and brush it on the cleaned and roughened Ta substrate. , so the surface is relatively rough, the adhesion is not high, and the consistency of the product is not very good, especially when 5-70% SnO is used 2 and 0-70%TiO 2 , it has been proved by research, experiment or practical verification that doped TiO 2 , SnO 2 Ruthenium dioxide (RuO 2 ) cathode material can save ruthenium dioxide (RuO 2 ), but the overall performance of the product after this improvement is significantly reduced, which is not acceptable for high-energy tantalum hybrid capacitors with high reliability requirements. Therefore, how to reduce ruthenium dioxide (RuO 2 ), while ensuring the performance of the product, the cathode material of the high-energy tantalum hybrid capacitor that can meet the high reliability requirements still needs further research