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.

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

The invention provides a novel cathode piece of a high-capacity tantalum capacitor, which is capable of obviously saving precious metal Ru, and a preparation method thereof. The cathode piece is formed by RuO2-SnO2-TiO2-Ta2O5/Ta, wherein the RuO2-SnO2-TiO2-Ta2O5 is a composite coating of the cathode piece with the following components according to parts by mass: 20-70% of RuO2, 5-7% of SnO2, 0-70% of TiO2 and 1-30% of Ta2O5; Ta piece is a cathode piece substrate, and the Ta piece is 0.05-0.1mm in thickness. The preparation method of the cathode piece comprises the following steps: uniformly mixing and painting alcohol liquor prepared from hydrated ruthenium trichloride, tin protochloride, tantalum pentachloride and butyl titanate on the cleaned and coarsened Ta substrate and drying at the temperature of 100-150 DEG C; then, performing thermal decomposition at the temperature of 250-400 DEG C for 30-60 minutes to obtain the RuO2-SnO2-TiO2-Ta2O5/Ta cathode piece. The cathode piece can replace RuO2/Ta cathode piece used for the high-capacity tantalum capacitor. The cathode piece provided by the invention overcomes the defects in the prior art, and has the advantages that the preparation process is simple and easy to control; the production equipment is simple; and the industrial production is easy to realize.

RuO2-SnO2-TiO2-Ta2O5/Ta cathode piece and preparation method thereof

The invention discloses a preparation method of a cathode plate for a high-energy tantalum hybrid capacitor. The cathode plate is a tantalum (titanium)-based cathode plate with a Ru, C and Ta composite coating and is prepared through steps of coating liquid preparation, substrate pretreatment, coating and high-temperature pyrolysis. The method is advantaged in that the tantalum compound is added into the composite coating material, the tantalum compound is decomposed by heating in the pyrolysis process, the generated oxide is attached to a substrate, so the binding force of the composite coating material and the substrate is increased, the composite coating material has excellent conductivity, and ESR performance of the cathode plate is improved.

Preparation method of cathode plate for high-energy tantalum hybrid capacitor

The invention provides a novel cathode piece of a high-capacity tantalum capacitor, which is capable of obviously saving precious metal Ru, and a preparation method for the novel cathode piece The cathode piece is formed by RuO2-TiO2-Ta2O5/ Ta or Ti, wherein the RuO2-TiO2-Ta2O5 is a composite coating of the cathode piece with the following components in parts by mass: 40-70 percent of RuO2, 15-50 percent of TiO2 and 10-20 percent of Ta2O5, and a Ta or Ti substrate is a cathode piece substrate; and the Ta or Ti piece is 005-01mm in thickness The preparation method for the cathode piece comprises the following steps of: painting alcohol precursor mixed liquor prepared from ruthenium acetate, RuO2-Ta2O5 gel powder and Cl6H36O4Ti or C8H20O4Ti to the cleaned and coarsened Ta or Ti substrate and drying at the temperature of 100-150 DEG C; then, performing thermal decomposition at the temperature of 250-400 DEG C for 30-60 minutes to obtain the RuO2-TiO2-Ta2O5/Ta or Ti cathode piece The cathode piece provided by the invention has the advantages that the preparation process is simple; the production equipment is simple; the product cost is low; the performance is stable; and the industrial production and application are easy

Xiangmei Zhou

Papers

Cathode piece of high-capacity tantalum capacitor and preparation method