High-durability fuel cell composite proton exchange membrane, and preparation method and application thereof

A proton exchange membrane and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of high cost and poor durability of hydrogen fuel cells, and achieve process safety, low hydrogen permeation current density, and stable performance.
CN112687927AActive Publication Date: 2021-04-20NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV
Publication Date
2021-04-20

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Abstract

The invention discloses a high-durability fuel cell composite proton exchange membrane, and a preparation method and an application thereof. The high-durability fuel cell composite proton exchange membrane comprises a membrane matrix and a metal oxide free radical quenching agent dispersed in the membrane matrix, and the surface of the free radical quenching agent is provided with an organic matter coating layer. Compared with a common Dupont Nafion membrane, the durability of the composite membrane coated with the polydopamine is greatly improved. The preparation process is simple, safe and low in cost, and can be used for industrial production of the composite proton exchange membrane.
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Description

Technical field

[0001] The invention relates to the field of fuel cells, and in particular to a proton exchange membrane and its preparation method and application. Background technique

[0002] Hydrogen fuel cells are hailed as the next generation clean energy carrier for portable and automotive applications due to their high energy density, high efficiency, low pollutant emissions, quiet operation, and short start-up and shutdown times. However, hydrogen fuel cells suffer from poor durability and high cost, mainly related to the proton exchange membrane (PEM). The proton exchange membrane, which plays a key role in hydrogen fuel cells, separates hydrogen and oxygen while allowing protons to pass through. DuPont's Nafion is considered a standard PEM because of its high proton conductivity, low hydrogen penetration and good chemical and mechanical stability. Contents of the invention

[0003] Purpose of the invention: One of the purposes of the present invention is to pr...

Claims

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