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KBSU develops lower-cost composite for hydrogen membranes
KBSU researchers developed a proton-conducting polymer composite for hydrogen membranes, combining thermal stability with a potentially lower-cost process.
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Researchers at Kabardino-Balkarian State University named after H.M. Berbekov have developed a heterogeneous proton-conducting polymer composite for solid-polymer fuel cells. The material is intended for membranes used in hydrogen-energy systems, electrolyzers and other devices that require high ionic conductivity.
Composite composition and properties
The team combined a fluorinated polyethersulfone with an ion-exchange filler, the KU-1 cation exchanger. According to the developers, the composite provides high proton conductivity while tolerating thermal loads. Its production method is also described as relatively simple and inexpensive.
The project specifies the following composition and performance requirements:
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- 56–64% ion-exchange filler;
- 36–44% polymer matrix;
- proton conductivity suitable for membrane assemblies;
- thermal stability for energy applications.
Membranes in these systems must withstand heat, moisture and chemical exposure without sacrificing conductivity. Their cost is another major constraint. Industry still relies heavily on fluoropolymers such as Nafion, while alternative materials are often developed and initially tested in university laboratories.
The KBSU material will need long-duration testing before it can move beyond laboratory work. If its reported characteristics are confirmed, it could advance to prototypes. Lower-cost membranes that maintain performance under operating conditions remain a key requirement for making fuel cells and electrolyzers more practical.
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via ITzine
