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The effect of H2O2 formation rates on the most active and durable of these catalysts (PtCo and PtIrCo) on Nafion membrane durability was studied using a single-sided membrane electrode assembly (MEA) with a built-in reference electrode.
The long-term test up to 33 days proves the membrane durability for EG dehydration.
To be able to increase membrane durability, the aging path involved must be elucidated.
On the basis of these experiments, a strategy can be drawn to improve the membrane durability.
Excellent membrane durability was confirmed for a KOH concentration range up to 10 wt.% and temperature up to 50 °C.
The ultimate goal of this work is to guide material design to achieve purge that preserves membrane durability with reduced shutdown power requirements.
Similar(52)
This reduced swelling leads to improved membrane mechanical durability as measured by increased lifetimes in RH cycling tests with increasing PVDF content.
The modified TFC membrane demonstrates robust durability under 180-h testing.
The technical challenges associated with their practical applications were maintaining the pH in cathodic and anodic fluids, higher internal resistance, usage of catalysts on electrodes, and membrane fouling and durability.
Promising strategies for improving membrane performance and durability in a hydrogen/air fuel cell include the use of ultra-low equivalent weight semicrystalline ionomers, covalently attaching conductive and water retaining particles to an ionomer, and adding a porous/nanofiber reinforcements to minimize in-plane swelling and shrinking.
Here the authors report a high-performance family of poly aryl piperidinium) membranes enabling promising durability and power density.
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