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DPS: High temperature polymer fuel cell has a record rate of degradation
According to recent reports from international media, Danish Power Systems (DPS) has been collaborating with and conducting tests at the Technical University of Denmark (DTU) and the University of Chemistry and Technology in Prague, Czech Republic. The company claims its fuel cell technology has achieved a groundbreaking level of stability—specifically, an exceptionally low degradation rate in high-temperature polymer electrolyte membrane fuel cells (HTPEMFCs).
The test, conducted under constant load conditions, lasted 9,000 hours at a temperature of 160°C. During this time, the DPS test battery showed a degradation rate of just 0.5 μV/h, equivalent to 0.00008% per hour. This is significantly better than the reference membrane, which degraded at a rate of 2.6 μV/h. The full test cycle extended to 13,000 hours. The team used polybenzimidazole (PBI) films and both cross-linked and linear PBI membranes, achieving average voltage decay rates of 1.4 μV/h and 4.6 μV/h, respectively.
DPS specializes in manufacturing membrane electrode assemblies (MEAs) and is one of the few companies capable of producing PBI materials, which are essential for making high-temperature polymer membranes used in fuel cells. Compared to traditional PEM fuel cells, these HTPEM membranes can operate at much higher temperatures—between 160°C and 200°C—offering greater thermal stability and efficiency.
The company’s fuel cell stacks use methanol as a fuel source, which is relatively inexpensive and easier to extract from biological resources. To build the stacks, DPS partnered with SerEnergy in Aalborg, Denmark, with support from the Danish Ministry of Energy’s EUDP project. SerEnergy also contributes to the system’s excellent operational stability and minimal degradation over time.
In recent years, DPS has focused on expanding its export of fuel cell products. It has made significant progress in developing ultra-high-temperature plastic membranes for batteries. According to the company, the technology is now highly mature, and commercial deployment is expected to follow soon. With continued innovation and strategic partnerships, DPS is positioning itself as a key player in the next generation of fuel cell technologies.