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

An electric double layer capacitor and electrode material technology, applied in the field of electronics, can solve the problems of poor product consistency, decreased overall performance, low adhesion, etc., and achieve the effects of excellent electrical properties, improved adhesion, and enhanced stability

Active Publication Date: 2013-09-18
ZHUZHOU RIWANG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0032] An electrode material for an electric double layer capacitor, the electrode material for an electric double layer capacitor is a high-energy tantalum hybrid capacitor cathode sheet, which is tantalum-based ruthenium dioxide (RuO 2 ) is a composite material cathode sheet as a matrix; the composite material cathode sheet includes a basic tantalum sheet, and the surface of the tantalum sheet is covered with a layer of various metal oxide layers formed by mixing ruthenium oxide and tantalum oxide with other metal oxides.

[0033] The multiple metal oxide layers are multi-metal oxide layers formed by mixing ruthenium oxide, tantalum oxide and active carbon with copper oxide, potassium oxide and manganese oxide and processed by chemical impregnation.

[0034] The content ratio of copper oxide, potassium oxide and manganese oxide is in any proportion, and the optimum content ratio is that the weight ratio of copper oxide, potassium oxide and manganese oxide is 2:1:0.5.

[0035...

Embodiment 2

[0055] The basic principle of embodiment two is the same as that of embodiment one, except that the composite material cathode sheet includes a basic tantalum sheet, and the surface of the tantalum sheet is covered by ruthenium oxide, tantalum oxide, activated carbon and copper oxide, potassium oxide, and manganese oxide. The three metal oxides are mixed, and the composition content of the multi-metal oxide layer formed by chemical impregnation treatment is different.

[0056] The material mass percentage composition of described multiple metal oxide layers is: 88% of ruthenium oxide, 10% of tantalum oxide, 1% of active carbon; Copper oxide, potassium oxide, manganese oxide three kinds of metal oxides 1%, the total composition RuO with a thickness of 100% and a tantalum sheet with a thickness of 0.05mm~0.12mm and a purity greater than 99.9% as a substrate. 2 -Ta 2 o 5 / Ta cathode sheet, a variety of metal oxide layers formed by chemical impregnation.

[0057] The content ra...

Embodiment 3

[0077] The basic idea of ​​embodiment three is the same as that of embodiment one, except that the cathode sheet of composite material includes a basic tantalum sheet, and the surface of the tantalum sheet is covered with ruthenium oxide, tantalum oxide, activated carbon, copper oxide, potassium oxide, and manganese oxide. The composition content of the multi-metal oxide layer formed by chemical impregnation treatment is different.

[0078] The material mass percentage composition of described multiple metal oxide layers is: ruthenium oxide 48%, tantalum oxide 50%, activated carbon 1%; Copper oxide, potassium oxide, manganese oxide three kinds of metal oxides 1%, the total composition RuO with a thickness of 100% and a tantalum sheet with a thickness of 0.05mm~0.12mm and a purity greater than 99.9% as a substrate. 2 -Ta 2 o 5 / Ta cathode sheet, a variety of metal oxide layers formed by chemical impregnation.

[0079] The ratio of copper oxide, potassium oxide and manganese ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/86
CPCY02E60/13
Inventor 彭伟袁益刘建清
Owner ZHUZHOU RIWANG ELECTRONICS TECH
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