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High-ductility metal pole plate pre-coating layer for reducing ion pollution of base material

A metal plate and ion pollution technology, applied in the direction of metal material coating process, coating, ion implantation plating, etc., can solve the problems of inapplicability to mass production and high cost, so as to improve ductility, corrosion resistance, The effect of reducing processing costs

Active Publication Date: 2022-02-08
SHANGHAI ZHIZHEN NEW ENERGY EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among many materials, precious metals Au, Ag, Pt, etc. have excellent ductility, but due to their high cost, they are not suitable for mass production

Method used

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  • High-ductility metal pole plate pre-coating layer for reducing ion pollution of base material
  • High-ductility metal pole plate pre-coating layer for reducing ion pollution of base material
  • High-ductility metal pole plate pre-coating layer for reducing ion pollution of base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A highly ductile metal plate pre-coating that reduces ionic contamination of the base material is prepared on a roll-to-roll metal plate coating equipment with a long roll of sheet-shaped metal foil as the metal base material, and is prepared by the following steps:

[0039] (1) Vacuum the cleaning chamber to 8E-3Pa lower than the background vacuum, heat the temperature to 200°C, feed argon gas to maintain the chamber pressure at 0.1Pa, and apply a bias voltage of -800V to the sample for high bias plasma Cleaning to remove impurities and oxide films on the surface of metal substrates;

[0040] (2) Heat the temperature in the deposition chamber to 400°C, feed argon gas to maintain the chamber pressure at 0.1Pa, apply a bias voltage of -500V to the sample, and deposit metal Ti high-energy particles on the surface of the metal substrate by high-bias sputtering , the deposition time is 10min, and a high-energy bonding layer with a thickness of 6nm is obtained;

[0041] (3)...

Embodiment 2

[0046] A highly ductile metal plate pre-coating that reduces ionic contamination of the base material is prepared on a roll-to-roll metal plate coating equipment with a long roll of sheet-shaped metal foil as the metal base material, and is prepared by the following steps:

[0047] (1) Vacuum the cleaning chamber to 8E-3Pa lower than the background vacuum, heat the temperature to 250°C, feed argon gas to maintain the chamber pressure at 0.2Pa, and apply a bias voltage of -700V to the sample for high bias plasma Cleaning to remove impurities and oxide films on the surface of metal substrates;

[0048] (2) Heat the temperature in the deposition chamber to 400°C, feed argon gas to maintain the chamber pressure at 0.1Pa, apply a bias voltage of -500V to the sample, and deposit metal Nb high-energy particles on the surface of the metal substrate by high-bias sputtering , the deposition time is 20min, and a high-energy bonding layer with a thickness of 20nm is obtained;

[0049] (3...

Embodiment 3

[0054] A highly ductile metal plate pre-coating that reduces ionic contamination of the base material is prepared on a roll-to-roll metal plate coating equipment with a long roll of sheet-shaped metal foil as the metal base material, and is prepared by the following steps:

[0055] (1) Vacuum the cleaning chamber to 8E-3Pa lower than the background vacuum, heat the temperature to 200°C, feed argon gas to maintain the chamber pressure at 0.1Pa, and apply a bias voltage of -800V to the sample for high bias plasma Cleaning to remove impurities and oxide films on the surface of metal substrates;

[0056] (2) Heat the temperature in the deposition chamber to 200°C, feed argon gas to maintain the chamber pressure at 0.2Pa, use the ion implantation method to implant high-energy ions of metal Cr on the surface of the metal substrate, the implantation energy is 0.1MeV, and the implantation time is 60min. Obtain a high-energy bonding layer with a thickness of 30nm;

[0057] (3) Heat th...

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Abstract

The invention discloses a high-ductility metal pole plate pre-coating layer for reducing ion pollution of a base material. The pre-coating layer takes a metal base material as a core material, and sequentially comprises a high-energy bonding layer which covers the surface of the metal base material and is formed by stacking metal high-energy particles, an ion blocking layer which covers the surface of the high-energy bonding layer, and an nano conductive layer which covers the surface of the ion barrier layer; and the ion barrier layer is a compact nano metal film layer with a single-layer composite metal structure or a multi-layer metal alternating structure or a multi-layer metal composite structure formed by combining the single-layer composite metal structure and the multi-layer metal alternating structure. Organic combination of bonding performance, ductility and conductive corrosion resistance of the pre-coating of the metal pole plate is achieved, the ductility of the coating is improved, cracks penetrating to a base body are prevented from being generated in the stamping forming process of the coating, the corrosion resistance of the coating is improved, the production efficiency of the metal pole plate is increased, and the metal pole plate processing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a high ductility metal plate precoat for reducing ionic contamination of substrates and a preparation method thereof. Background technique [0002] Proton Exchange Membrane Fuel Cell (PEMFC) uses hydrogen as fuel to generate electricity, and the product is water pollution-free, which is very friendly to the environment. Its applications include automobiles, drones, and fixed power stations. Among the many parts of the proton exchange membrane fuel cell stack, the bipolar plate plays a vital role, mainly responsible for gas distribution, heat conduction, power transmission and certain structural support, and the metal sheet also relies on Excellent electrical conductivity, thermal conductivity and shock resistance have become the mainstream materials for bipolar plate processing. However, the metal plate without surface modification is prone to severe corrosion, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/34C23C14/35C23C14/48C23C14/02C23C14/06C23C14/16C23C16/26C23C28/00H01M8/0208H01M8/0228
CPCC23C14/48C23C14/022C23C14/025C23C14/34C23C14/35C23C14/165C23C14/0605C23C14/16C23C16/26C23C28/321C23C28/343H01M8/0228H01M8/0208Y02E60/50Y02P70/50
Inventor 毕飞飞黎焕明姜天豪胡鹏蓝树槐
Owner SHANGHAI ZHIZHEN NEW ENERGY EQUIP CO LTD
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