In proton exchange membrane fuel cell, the catalytic oxidation of protons is cathode inside membrane, at the same time, the anode of electrons to move to the cathode through an external circuit, the qualitative combined with electronic and cathodic reduction of oxygen on the surface of the produced water, the energy produced by the electricity through an external circuit conduction. In typical proton exchange membrane fuel cell membrane electrode and the efficiency is a key factor, and high proton conductivity is an important feature of proton exchange membrane materials. Proton exchange membrane is usually composed of good separation structure of hydrophobic and hydrophilic, hydrophobic structure to avoid the excessive water absorption, make the swelling of membrane is lower, maintain the mechanical stability of membrane; Hydrophilic groups of sulfate is conducting channel provides enough, can be protons from anode to cathode, gas fuel mixture at the same time.
Early proton exchange membrane fuel cells have the disadvantages of high cost and short life due to the use of sulfonated polystyrene-styrene copolymer membranes. In the 1970s, the Nafion membrane replaced the sulfonated polystyrogen-divinylbenzene copolymer membrane as the standard membrane for proton exchange membrane fuel cells.
The all-gas sulfonic acid membrane needs to operate at less than 100 ° C, and when the temperature is higher than 100 ° C, the membrane dehydrates rapidly and the ionic domains in the membrane structure collapse, resulting in a significant decrease in the conductivity. At present, most fuel cells operate at temperatures below 100 ° C, but this is not optimal. Therefore, proton exchange membranes that can adapt to high temperatures need to be further developed. The production scale has a significant effect on the manufacturing cost of proton exchange membrane. The cost of proton exchange membrane is mainly composed of three parts: (1) ionomer material cost; (2) Material cost of expanded polytetroxene and (3) film manufacturing cost. Material cost and manufacturing wood are both affected by the production scale. When the production scale increases from 1000 sets/year to 10000 sets/year, the manufacturing cost of proton exchange and film exchange can be reduced by 77% and the total cost can be reduced by 70%.
VET Technology Co., Ltd is the energy department of VET Group, which is a national high-tech enterprise specializing in the research and development, production, sales and service of automotive and new energy parts, mainly dealing in motor series, vacuum pumps, fuel cell&flow battery, and other new advanced material.
Over the years, we have gathered a group of experienced and innovative industry talents and R & D teams, and have rich practical experience in product design and engineering applications. We have continuously achieved new breakthroughs in product manufacturing process equipment automation and semi-automated production line design, which enables our company to maintain strong competitiveness in the same industry.
With R & D capabilities from key materials to end application products, the core and key technologies of independent intellectual property rights have achieved a number of scientific and technological innovations. By virtue of stable product quality, the best cost-effective design scheme and high-quality after-sales service, we have won the recognition and trust from our customers.
Nafion PFSA membranes manufactured by VET Energy are non-reinforced membranes based on Nafion PFSA polymers, perfluorinated sulfonic acid/polytetrafluoroethylene copolymers in acid (H+) form. Nafion PFSA membranes are widely used in proton exchange membrane (PEM) fuel cells and water electrolysers. In a wide variety of electrochemical cells, membranes act as separators and solid electrolytes and are required to selectively pass cations through cell junctions. The polymer is chemically resistant and durable.
Post time: Jul-29-2022