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Progress In Research And Development Of Proton Exchange Membranes In China From 2016 To 2018
- Jun 04, 2018 -

Proton exchange membrane fuel cell (PEMFC) is a kind of generation device which converts the chemical energy of hydrogen and air supplied from the outside directly into electric energy by electrochemical reaction, and the thermal energy and other reaction products are mainly made up of end plate and insulation plate. A collector board and a plurality of single cells.

 

Among them, single cell mainly consists of bipolar plate and membrane electrode. The membrane electrode is mainly composed of five layers of materials, which are two layers of gas diffusion layer, two layers of catalytic layer and one layer of proton exchange membrane. Among them, proton exchange membrane directly affects the service life of fuel cell. There are two main functions of proton exchange membrane: one is to provide hydrogen ion channel for electrolyte, and the other is to isolate the bipolar reaction gas as diaphragm. In addition, the proton exchange membrane also needs to support the catalyst layer.

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The main types of proton exchange membranes include perfluorinated sulfonic acid proton exchange membranes, non perfluorinated proton exchange membranes, non fluorinated proton exchange membranes, composite membranes and high temperature membranes. According to public sources, the most widely used proton exchange membrane is DuPontundefineds Nafion series perfluorinated sulfonic acid proton exchange membrane.

 

 

    As the only Chinese company to pass AFCC technology, Dongyue Group was with Mercedes-Benz in 2013. Ford signed a joint research and development agreement for commercial perfluorinated proton exchange membranes and membrane electrode resins for fuel cell vehicles. In 2014, Dongyue Groupundefineds proton exchange membrane had a life span of only 800 hours, reached 2000 hours in 2015, and successfully exceeded 6000 hours in 2016. At present, Dongyue Group has completed the production plant of perfluorinated sulfonic acid resin required for 50 tons of proton exchange membrane per year, which can meet the needs of 25000 fuel cell vehicles.



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