Nickel electrode slurry, preparation method and application thereof

A nickel electrode and slurry technology, applied in the direction of fixed capacitor electrodes, circuits, capacitors, etc., can solve the problems of large spacing, reducing the oxidation resistance of nickel particles, and low pulping efficiency.

Active Publication Date: 2021-05-07
CHAOZHOU THREE CIRCLE GRP +1
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  • Abstract
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  • Claims
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Problems solved by technology

However, the existing method is generally to combine barium titanate particles on the surface of nickel powder, and the distance between barium titanate particles is relatively large, so the effect of inhibiting the sintering shrinkage of nickel powder is still not ideal.
In addition, most of the existing methods only ...

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  • Nickel electrode slurry, preparation method and application thereof
  • Nickel electrode slurry, preparation method and application thereof
  • Nickel electrode slurry, preparation method and application thereof

Examples

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Embodiment 1

[0059] A nickel electrode slurry, which consists of the following components in mass fraction: coated nickel powder 54%, barium titanate particles 3%, binder 6.5%, dispersant 2.5%, solvent 24% and thinner 10% %; In coated nickel powder, the mass fraction of nickel powder in the nickel electrode slurry is 50%, and the mass fraction of the barium titanate coating layer in the nickel electrode slurry is 4%. The dispersant is SC-0505K dispersant; the solvent is dihydroterpineol; the diluent is MSA; the adhesive is composed of EC resin and PVB resin, and the mass ratio of EC resin to PVB resin is 2:1; coating type In the nickel powder, the particle size of the nickel powder is 300nm, the thickness of the barium titanate coating layer is 10nm; the particle size of the barium titanate particles is 50nm.

[0060] The preparation method of the nickel electrode slurry of embodiment 1 comprises following preparation steps:

[0061] (1) Preparation of nickel master slurry: mix coated nic...

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Abstract

The invention discloses a nickel electrode slurry which comprises the following components in parts by weight: 40.05-70 parts of a coated nickel powder, 0.01-5 parts of barium titanate particles, 0-8 parts of an adhesive, 0.5-3 parts of a dispersing agent, 10-40 parts of a solvent and 0-15 parts of a diluent. The coated nickel powder comprises a nickel powder and a barium titanate coating layer coated on the surface of the nickel powder. According to the formula, the coated nickel powder with the barium titanate coating layer and the barium titanate particles doped in the coated nickel powder are selected at the same time, sintering shrinkage of the nickel powder is inhibited through the combined action of the barium titanate with the two structural relations, and the effect is greatly improved; and according to the process, the slurry is dispersed in a manner of combining squeezing and cavitation blasting so that the dispersion effect is enhanced, the mechanical grinding time is shortened, excessive grinding is prevented, the surface characteristics of the nickel powder are kept, and the oxidation resistance of the nickel powder is excellent.

Description

technical field [0001] The invention belongs to the technical field of conductive paste, and in particular relates to a nickel electrode paste and its preparation method and application. Background technique [0002] Multilayer ceramic capacitors (MLCC) are widely used in mobile communications, computers, consumer electronics, automotive electronics and other information electronics fields. The traditional MLCC electrode material is Pb / Ag alloy or pure Pb, which is expensive, and the use of base metal materials to replace traditional Pb / Ag electrode materials can meet the requirements of large capacity and low cost. Therefore, base metallization of MLCC electrodes is the current development trend. [0003] However, there are still some problems in the firing process of the base metal inner electrode multilayer ceramic capacitor, such as: the nickel powder of the inner electrode material is easily oxidized to cause poor conductivity, and the shrinkage of the inner electrode ...

Claims

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Application Information

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IPC IPC(8): H01G4/008H01G4/12H01G4/30
CPCH01G4/0085H01G4/12H01G4/30
Inventor 孙健邱基华马艳红
Owner CHAOZHOU THREE CIRCLE GRP
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