Gas cells provide a promising resolution for clear power with benefits over conventional electrical energy programs, together with prolonged driving vary and better power density. Regardless of these advantages, the excessive prices and sturdiness issues related to gasoline cell stacks have restricted their commercialization.
The sturdiness of membrane electrode assemblies (MEAs), a key element of proton change membrane gasoline cells (PEMFCs), is especially affected by the body sealing construction, which is usually missed in analysis.
A examine, carried out by Tiankuo Chu and Yanbo Wang from Tongji College and the Nationwide Middle of Know-how Innovation for Gas Cell (China), investigates the consequences of various body sealing buildings on MEA sturdiness.
The researchers utilized a thermal shock bench take a look at as an accelerated getting old methodology to simulate the affect of frequent temperature adjustments on MEA sturdiness. The work is revealed within the journal Frontiers in Power.
The outcomes reveal that thermal shock results in the formation of cracks within the proton change membrane (PEM) on the hole between the body and the lively space, in addition to harm to the bonding interface between the body and the membrane. This harm will increase the danger of reactant fuel crossover, a important concern for gasoline cell efficiency.
The examine in contrast single-layer and improved double-layer body buildings and located that the addition of a cushion layer within the double-layer body enhances continuity and reduces membrane deformation, thereby stopping harm.
This analysis gives priceless insights into the design of MEAs, emphasizing the significance of body sealing buildings in enhancing the sturdiness and efficiency of PEMFCs.
By understanding the mechanisms of mechanical attenuation on the body and evaluating the effectiveness of improved body buildings, the examine contributes to the event of extra dependable and long-lasting gasoline cell programs.
The findings are essential for reaching the 5,000-hour sturdiness objective for gasoline cells, bringing the commercialization of gasoline cell automobiles nearer to actuality.
Extra info:
Yanbo Wang et al, Enchancment of sturdiness of membrane electrode meeting by body sealing construction in temperature shock, Frontiers in Power (2024). DOI: 10.1007/s11708-024-0955-3
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Investigating results of various body sealing buildings on sturdiness of membrane electrode assemblies (2024, August 29)
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