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Membrane electrode assembly production quality rapid sampling inspection method

A membrane electrode assembly, production quality technology, applied to electrical components, measurement of electrical variables, electrochemical generators, etc., can solve the quality control requirements that cannot truly reflect the performance and life of membrane electrode assemblies, and test methods cannot adapt to mass production And other issues

Active Publication Date: 2021-02-09
武汉氢能与燃料电池产业技术研究院有限公司
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  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a rapid sampling method for the production quality of hydrogen fuel cell membrane electrode assemblies to solve the problem that the performance and life of membrane electrode assemblies cannot be truly reflected in the prior art, and at the same time solve the problem that the test methods in the prior art cannot adapt to large Quality control requirements for mass production

Method used

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Embodiment 1

[0038] refer to figure 1 As shown, this embodiment is a rapid sampling method for the production quality of membrane electrode assemblies, including the following steps:

[0039] In step 1, the products to be inspected are taken out from the produced membrane electrode assemblies according to the batch sampling inspection requirements. Cooperate with the plate clamping tool to assemble a single fuel cell according to the assembly relationship, wherein the plate clamping tool includes cathode electrode sheet, cathode seal, cathode flow field plate, anode seal, anode flow field plate, anode electrode sheet and necessary The fasteners, the surface of the cathode electrode sheet and the anode electrode sheet are attached with a 2nm gold film by vacuum evaporation, and the above components are assembled through the stress of 10% compression rate in the active area of ​​the membrane electrode. After assembly, it is connected to a single fuel cell detection device, which includes an...

Embodiment 2

[0044] This embodiment is a method for rapid sampling inspection of the production quality of membrane electrode assemblies, including the following steps:

[0045] In step 1, the products to be inspected are taken out from the produced membrane electrode assemblies according to the batch sampling inspection requirements. Cooperate with the plate clamping tool to assemble a single fuel cell according to the assembly relationship, wherein the plate clamping tool includes cathode electrode sheet, cathode seal, cathode flow field plate, anode seal, anode flow field plate, anode electrode sheet and necessary The fasteners, the surface of the cathode electrode sheet and the anode electrode sheet are attached with a 2nm gold film by vacuum evaporation, and the above components are assembled through the stress of 10% compression rate in the active area of ​​the membrane electrode. After assembly, it is connected to a single fuel cell detection device, which includes an integrated con...

Embodiment 3

[0049] This embodiment is a method for rapid sampling inspection of the production quality of membrane electrode assemblies, which includes the following steps: Step 1, taking out the products to be inspected from the produced membrane electrode assemblies according to the batch sampling inspection requirements. Cooperate with the plate clamping tool to assemble a single fuel cell according to the assembly relationship, wherein the plate clamping tool includes cathode electrode sheet, cathode seal, cathode flow field plate, anode seal, anode flow field plate, anode electrode sheet and necessary The fasteners, the surface of the cathode electrode sheet and the anode electrode sheet are attached with a 2nm gold film by vacuum evaporation, and the above components are assembled through the stress of 10% compression rate in the active area of ​​the membrane electrode. After assembly, it is connected to a single fuel cell detection device, which includes an integrated control unit, ...

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Abstract

The invention discloses a membrane electrode assembly production quality rapid sampling inspection method, which comprises the following steps: taking out a to-be-inspected product from a produced membrane electrode assembly according to batch sampling inspection requirements, assembling into a single fuel cell according to an assembly relationship in cooperation with a polar plate clamping tool,and connecting to a single fuel cell detection device; taking a cathode of a single fuel cell as a working electrode, taking an anode as a counter electrode and a reference electrode, introducing anode gas and cathode gas, heating the cell to a certain temperature, sequentially performing linear scanning voltammetry and cyclic voltammetry tests, and measuring the hydrogen permeation current density, membrane short-circuit impedance and electrochemical active area of a membrane electrode assembly; and heating the cell to a certain temperature, introducing anode gas and cathode gas, and measuring the open-circuit potential of the membrane electrode assembly. According to the method, an electrochemical measurement means is adopted, the preparation work is simple, the measurement time is short, the measurement result is accurate, and the method is very suitable for rapid sampling inspection of large-batch membrane electrode assembly production quality.

Description

technical field [0001] The invention belongs to the technical field of hydrogen fuel cells, in particular to a method for rapid sampling inspection of the production quality of a membrane electrode assembly. Background technique [0002] Hydrogen fuel cells are considered to be the first choice for the next generation of mobile alternative energy due to their high efficiency, clean environmental protection, and fast start-up. At this stage, it has been widely used in military submarines, aerospace and other fields. However, it is still in the demonstration stage in civilian fields such as power vehicles, power stations, and portable batteries. The main reason is that durability and safety need to be improved. The main components of a fuel cell stack include membrane electrode assemblies, bipolar plates, etc., where the membrane electrode assemblies include catalysts, membrane materials, and diffusion layers. The membrane electrode assembly is the core component of the fuel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04537G01N27/48G01R31/00
CPCH01M8/04552H01M8/04582H01M8/04641G01R31/003G01N27/48Y02E60/50Y02P70/50
Inventor 詹明胡旦肖飞虎胡志忠夏丰杰
Owner 武汉氢能与燃料电池产业技术研究院有限公司
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