Pole lug nickel strap surface treatment passivation solution

A technology of surface treatment and passivation solution, which is applied in the direction of metal material coating process, etc., can solve the problem of poor adhesion between passivation film and tab glue

Active Publication Date: 2016-02-17
MAIKAIMEN ELECTRONICS TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the passivation film treated with passiv

Method used

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  • Pole lug nickel strap surface treatment passivation solution
  • Pole lug nickel strap surface treatment passivation solution
  • Pole lug nickel strap surface treatment passivation solution

Examples

Experimental program
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Effect test

Embodiment approach

[0046] As an embodiment, the inorganic acid is one or more of sulfuric acid, hydrochloric acid, phosphoric acid, perchloric acid, lactic acid, hydrofluoric acid, and acetic acid.

[0047] As an embodiment, the film-forming accelerator is one or more of ammonium vanadate, strontium chloride, hydrofluoric acid, malonic acid, oxalic acid, glutaric acid, malic acid, and maleic acid.

[0048] As an embodiment, the passivation solution for the surface treatment of tab nickel strips also includes 0.01-1 parts by weight of a compound of a cyclic polyether compound and modified graphene, and the cyclic polyether compound The structural formula is:

[0049]

[0050] Wherein, R is amino, carboxyl, hydroxymethyl, phenyl, acyl or alkoxy;

[0051] X is one or more of O, S and N;

[0052] n=1-10.

[0053] As an embodiment, the modified graphene is hydroxylated graphene, carboxylated graphene, sulfonated graphene or aminated graphene.

[0054] As a preferred manner, the modified graphe...

Embodiment

[0142] The present invention is specifically described below by way of examples. It is necessary to point out that the following examples are only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention, some non-essential improvements made by those skilled in the art according to the content of the present invention above And adjustments still belong to the protection scope of the present invention.

[0143] In addition, unless otherwise stated, the raw materials used are all commercially available, and the parts used in the following materials are all parts by weight.

[0144] Table 1

[0145]

[0146] B: Chromium trioxide

[0147] C: Inorganic acid

[0148] D: film-forming accelerator

[0149] E: Phytic acid

[0150] H: water

[0151] I: Others: cetyltrimethylammonium bromide, benzotriazole, organic phosphonic acid

[0152] Table 2 is the raw material formulation and dosage (parts by we...

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PUM

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Abstract

The invention discloses a pole lug nickel strap surface treatment passivation solution and a preparing method thereof. A composition comprises water, chromium trioxide, mineral acid and a film formation accelerant. By means of the pole lug nickel strap surface treatment passivation solution, the problems that the passivation film compactness is low, and the bonding performance between a film and pole lug glue is poor are solved.

Description

technical field [0001] The invention relates to the field of surface treatment of tab tabs of new energy power batteries, in particular, the invention relates to a passivation solution for surface treatment of tab tabs of nickel strips. Background technique [0002] Nickel and nickel alloys have a wide range of applications in the field of new energy power battery tabs due to their good strength, excellent electrical conductivity, thermal conductivity and plasticity. However, nickel and nickel alloys are prone to damage in the form of pitting corrosion, crevice corrosion, stress corrosion and corrosion fatigue when used in humid, alkaline media such as industrial gases and fuel gases, and salt water. Handling is a required process. [0003] Passivation treatment is an effective means to prevent nickel tabs from being corroded. At present, commonly used passivation treatment solutions are prone to produce toxic substances and carcinogens, which cause harm to human beings a...

Claims

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Application Information

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IPC IPC(8): C23C22/24C23C22/26C23C22/27C23C22/33C23C22/37C23C22/38C23C22/43C23C22/44C23C22/46C23C22/47
CPCC23C22/24C23C22/26C23C22/27C23C22/33C23C22/37C23C22/38C23C22/43C23C22/44C23C22/46C23C22/47
Inventor 沈明森
Owner MAIKAIMEN ELECTRONICS TECH SHANGHAI
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