Nanometal layer for fuel cell metal pole plate and preparation method

A metal plate and nano-metal technology, which is applied in nanotechnology for materials and surface science, battery electrodes, nanotechnology, etc., can solve the problem of poor durability of coatings, poor electrical conductivity and corrosion resistance of metal plates To solve the problems such as better, to achieve the effect of enhancing electrical conductivity, reducing the amount of precious metals used, and reducing production costs

Pending Publication Date: 2018-09-28
SHANGHAI ZHIZHEN NEW ENERGY EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a nano-metal layer and a preparation method for a metal pole plate of a fuel cell, and the nano-metal layer and a preparation method for a metal pole plate of a fuel cell are described To solve the technical problems of poor electrical conductivity and corrosion resistance of fuel cell metal plates in the prior art, and low durability of coatings in the acidic environment of fuel cells

Method used

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  • Nanometal layer for fuel cell metal pole plate and preparation method
  • Nanometal layer for fuel cell metal pole plate and preparation method
  • Nanometal layer for fuel cell metal pole plate and preparation method

Examples

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Embodiment 1

[0031] A kind of nanometer metal layer that is used for fuel cell metal pole plate, its structure is as figure 1 As shown, the nano-metal layer first deposits the underlying metal 12 on the pole plate 11, and then deposits a non-noble metal and noble metal mixed coating 13, and the mixing ratio of the non-noble metal and the noble metal is between 1% and 90%.

Embodiment 2

[0033] A kind of nanometer metal layer that is used for fuel cell metal pole plate, its structure is as figure 2 As shown, the nano-metal layer first deposits the bottom layer 22 on the pole plate 21, then deposits a non-noble metal and noble metal mixed coating, the mixing ratio of the non-noble metal and the noble metal is between 0% and 90%, and finally performs plasma treatment and After post-processing, the dot-shaped noble metal conductive layer 23 is obtained.

Embodiment 3

[0035] A kind of nanometer metal coating that is used for fuel cell metal pole plate, its structure is as image 3 As shown, the nano-metal layer is first deposited on the polar plate 31 with the underlying non-noble metal layer 32, the non-noble metal layer and the noble metal composite layer 33 alternately deposited, and then plasma etching and vacuum annealing are performed to obtain a nano-multilayer structure.

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Abstract

The invention provides a nanometal coating for a fuel cell metal pole plate, the nanometal coating comprises a substrate layer composed of a metal pole plate, at least one non-noble metal layer is deposited on the substrate layer, a hybrid layer alternatively composed of a non-noble metal and a noble metal is deposited on the non-noble metal layer, the noble metal is located at the outermost sideof the nanometal coating, thickness of the non-noble metal is 1-500nm, and in the hybrid layer composed of the non-noble metal and the noble metal, mass ratio of the non-noble metal to the noble metalis 1-90:100, and the coating thickness of the hybrid layer is 1-100nm. The invention also provides a preparation method of the nanometal coating for the fuel cell metal pole plate. In comparison withthe existing coating, by coating provided by the invention, dosage of the noble metal can be reduced remarkably, surface conductive performance and anti-corrosion performance of the metal pole platecan be enhanced, and endurance quality of the fuel cell pole plate is improved.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a metal pole plate of a fuel cell, in particular to a nanometer metal layer used for the metal pole plate of a fuel cell and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell is a new type of energy device, which has the characteristics of fast start-up, no pollution, high efficiency, and fast response to load changes. It has broad application prospects in automobiles, fixed power stations, and portable power supplies. A typical proton exchange membrane fuel cell mainly includes membrane electrode assemblies, pole plates, sealing rings, end plates and other components. Among them, the pole plate is one of the key components in the fuel cell, which mainly plays the main roles of supporting the membrane electrode, distributing the reaction gas, collecting the current, and discharging the water generated by the reaction. The polar plate acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90B82Y30/00
CPCH01M4/8867H01M4/8878H01M4/8882H01M4/9016H01M4/9041B82Y30/00Y02E60/50
Inventor 毕飞飞徐一凡姜天豪蓝树槐
Owner SHANGHAI ZHIZHEN NEW ENERGY EQUIP CO LTD
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