WebNov 23, 2024 · With fast consumption of non-renewable energy such as coal and petroleum, proton exchange membrane (PEM) fuel cells (PEMFCs) as promising energy conversion devices have recently attracted increasing attention, due to their high energy efficiency, simplicity, quick start-up and environmental friendliness for automotive, stationary and … WebAmazon.com. Spend less. Smile more.
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WebNov 1, 2011 · SUMMARY Direct methanol fuel cells have the potential to power future microelectronic and portable electronic devices because of their high energy density. One of the major obstacles that currently prevent the widespread applications of direct methanol fuel cells is the methanol crossover through the polymer‐electrolyte membrane. … WebJan 28, 2004 · Novel sulfonated polyimides (SPIs) were prepared from 1,4,5,8 … WebBAPBDS was synthesized according to the previously reported method [33]. Synthesis of amine-terminated polybenzimidazole oligomer To a 100-mL dry three-neck flask equipped with a nitrogen inlet and a nitrogen outlet were added 54 g of PPA and 14 g of phosphorus pentoxide under nitrogen flow. The mixture was heated at 120 C and mechanically ... teenage mutant ninja turtles remix