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Stainless steel metal bipolar plate, preparation method thereof and fuel cell

A metal bipolar plate, stainless steel technology, used in fuel cells, fuel cell parts, metal material coating processes, etc., can solve the problem of unsatisfactory fuel cell electrochemical performance, unsatisfactory electrochemical performance, poor corrosion resistance, etc. problem, to achieve the effect of excellent corrosion resistance, excellent electrical conductivity, and good hydrophobicity

Active Publication Date: 2021-06-04
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, provide a kind of stainless steel metal bipolar plate containing MAX phase anticorrosion coating and preparation method thereof, to solve the problem of high resistance or poor corrosion resistance of the existing coated metal bipolar plate Technical Issues Leading to Unsatisfactory Electrochemical Performance of Fuel Cells
[0009] Another object of the present invention is to provide a fuel cell to overcome the unsatisfactory electrochemical performance existing fuel cell technical problems

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  • Stainless steel metal bipolar plate, preparation method thereof and fuel cell
  • Stainless steel metal bipolar plate, preparation method thereof and fuel cell
  • Stainless steel metal bipolar plate, preparation method thereof and fuel cell

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preparation example Construction

[0030] Correspondingly, the embodiment of the present invention also provides a preparation method of the above-mentioned stainless steel metal bipolar plate. combine figure 1 , the technological process of the preparation method of the stainless steel metal bipolar plate is as follows figure 2 As shown, it includes the following steps:

[0031] S01. Surface pretreatment of the stainless steel metal bipolar plate substrate and the target material: provide the stainless steel metal bipolar plate substrate 1, the transition layer target material and the MAX phase target material, and treat the stainless steel metal bipolar plate substrate 1, the Surface pretreatment of the transition layer target and the MAX phase target;

[0032] S02. Growing a transition layer on the surface of the stainless steel metal bipolar plate substrate: depositing the transition layer target after the surface pretreatment on the surface of the stainless steel metal bipolar plate substrate 1 by magne...

Embodiment 1

[0051] This embodiment provides a stainless steel metal bipolar plate and a preparation method thereof. The structure of the stainless steel metal bipolar plate is as follows figure 1 As shown, it includes a stainless steel metal bipolar plate base 1, a transition layer 2 and a MAX phase anti-corrosion coating 3, and along the direction from the stainless steel metal bipolar plate base 1 to the MAX phase anti-corrosion coating 3, the stainless steel metal bipolar plate base 1. The transition layer 2 and the MAX phase anti-corrosion coating 3 are sequentially laminated and integrated. Wherein, the material of the stainless steel metal bipolar plate substrate 1 is a 0.1mm thick SS201 stainless steel bipolar plate substrate; the material of the transition layer 2 is titanium metal with a thickness of 100nm; the MAX phase anti-corrosion coating The material of layer 3 is Ti 3 SiC 2 , and its thickness is 500nm.

[0052] The preparation method of the stainless steel metal bipol...

Embodiment 2

[0061] This embodiment provides a stainless steel metal bipolar plate and a preparation method thereof. The structure of the stainless steel metal bipolar plate is as follows figure 1 As shown, it includes a stainless steel metal bipolar plate base 1, a transition layer 2 and a MAX phase anti-corrosion coating 3, and along the direction from the stainless steel metal bipolar plate base 1 to the MAX phase anti-corrosion coating 3, the stainless steel metal bipolar plate base 1. The transition layer 2 and the MAX phase anti-corrosion coating 3 are sequentially laminated and integrated. Wherein, the material of the stainless steel metal bipolar plate substrate 1 is a 0.1mm thick SS304 stainless steel bipolar plate substrate; the material of the transition layer 2 is titanium metal with a thickness of 100nm; the MAX phase anti-corrosion coating The material of layer 3 is Ti 3 AlC 2 , and its thickness is 400nm.

[0062] The preparation method of the stainless steel metal bipol...

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Abstract

The invention discloses a stainless steel metal bipolar plate, a preparation method thereof and a fuel cell. The stainless steel metal bipolar plate comprises a stainless steel metal bipolar plate substrate, a transition layer and an MAX-phase anticorrosive coating, the transition layer is laminated and combined on the surface of the stainless steel metal bipolar plate substrate, and the MAX-phase anticorrosive coating is laminated and combined on the surface of the transition layer. The stainless steel metal bipolar plate has excellent conductivity and corrosion resistance, and the MAX-phase anticorrosive coating is compact, high in hardness, wear-resistant, high-temperature-resistant, flat, smooth, few in microdefects, good in hydrophobicity and firm in structure. The preparation method can guarantee that the prepared stainless steel metal bipolar plate is stable in performance, conditions are easy to control, and efficiency is high. The fuel cell containing the stainless steel metal bipolar plate has stable electrochemical performance, high power density and excellent electrochemical performance.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a stainless steel metal bipolar plate, a preparation method thereof and a fuel cell. Background technique [0002] A fuel cell is an efficient power generation device that converts chemical energy directly into electrical energy. The proton exchange membrane fuel cell stack is mainly composed of bipolar plates, gas diffusion layers and membrane electrodes. Among them, the bipolar plate has the functions of separating fuel and oxidant, collecting and conducting current, evenly distributing gas to the reaction layer of the electrode for electrochemical electrode reaction, discharging heat, and maintaining a uniform temperature field of the battery. It is one of the important components of the fuel cell. Therefore, bipolar plate materials are required to have high electrical conductivity, gas barrier properties, corrosion resistance, wear resistance, impact and vibra...

Claims

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Application Information

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IPC IPC(8): H01M8/0228H01M8/021C23C14/06C23C14/16C23C14/35C23C14/58C23C14/02
CPCH01M8/0228H01M8/021C23C14/0635C23C14/0641C23C14/165C23C14/352C23C14/3485C23C14/345C23C14/5806C23C14/028C23C14/022Y02E60/50
Inventor 朱光明陆境莲胡仁涛唐杰
Owner SHENZHEN UNIV
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