High-strength alkaline anionic polymer cross-linked membrane and preparation method thereof

A basic anion and polymer technology, applied in the field of materials, can solve the problem of high cost of perfluorosulfonic acid membranes, achieve excellent dimensional stability, high mechanical strength, and improve mechanical strength
CN112759778AActive Publication Date: 2021-05-07WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2021-05-07

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Abstract

The invention discloses a high-strength alkaline anionic polymer cross-linked membrane and a preparation method thereof. The preparation method comprises the following steps: firstly, synthesizing polymers with different functional group side chains; respectively dissolving the obtained modified polymer in an organic solvent to prepare a membrane solution with a certain concentration; and finally, fully mixing the two membrane solutions under a normal temperature condition to obtain a uniform mixed membrane solution, and placing the uniform mixed membrane solution under a proper high-temperature condition to perform thermal crosslinking membrane formation so as to obtain the high-strength alkaline anionic polymer crosslinked membrane. The alkaline anionic polymer membrane with high mechanical strength is obtained by adopting an indirect cross-linking method, and the alkaline anionic polymer cross-linked membrane obtained by adopting an indirect chemical cross-linking method has high mechanical strength and excellent dimensional stability. The alkaline anionic polymer cross-linked membrane has excellent physical and chemical properties, so that the alkaline anionic polymer cross-linked membrane has good cell performance when being applied to an alkaline polymer membrane fuel cell.
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Description

technical field

[0001] The invention belongs to the field of materials, and relates to a preparation technology of an ion polymer membrane, in particular to a preparation method of a high-strength basic anion polymer cross-linked membrane. Background technique

[0002] The 21st century is the century of energy. How to use energy efficiently and greenly is an important topic of sustainable development. As the fourth generation of power generation after thermal power, hydropower and nuclear power, fuel cell is an important way of energy utilization. Known as a clean and efficient power source in the 21st century, it has attracted widespread attention, and fuel cell technology has also developed rapidly in recent years. Proton exchange membrane fuel cell technology has been commercialized and applied to vehicle power systems. An endless stream of fuel cell vehicles and buses have gradually entered the public's field of vision. However, the strongly acidic conditions of this...

Claims

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