Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 109-64-8, Name is 1,3-Dibromopropane, SMILES is BrCCCBr, in an article , author is Yang, Jingshuai, once mentioned of 109-64-8, Name: 1,3-Dibromopropane.
Dual cross-linked polymer electrolyte membranes based on poly(aryl ether ketone) and poly(styrene-vinylimidazole-divinylbenzene) for high temperature proton exchange membrane fuel cells
One critical issue to phosphoric acid (PA) doped high-temperature proton exchange membranes (HT-PEMs) is to balance the proton conductivity and mechanical properties for overall application performance in fuel cells. Addressing the issue, we prepare durable HT-PEMs having the dual crosslinking structure by employing poly (vinylimidazole-divinylbenzene-styrene) (poly(VIm-DVB-St)) copolymer as a crosslinker and using the poly (aromatic ether ketone) (PAEK) polymer containing four methyl groups as the host membrane matrix. The imidazole groups of poly(VIm-DVB-St) react with benzyl bromide groups of brominated PAEK for both the primary cross-linking network and high PA doping. The divinylbenzene crosslinked poly (styrene-co-vinylimidazole) network generates the secondary cross-linking structure. The formed reticular polymer chain structure brings on low swelling and high mechanical strength of the HT-PEMs. The fuel cell based on the acid doped PAEK41-85%VIm/233.0 PA shows a H-2-air fuel cell peak power density of 306 mW cm(-2) at 200 degrees C without back pressure, and a low degradation rate of 3.9 x 10(-5) V h(-1) during a period of 600 h under a constant current density of 200 mA cm(-2) at 160 degrees C.
Interested yet? Read on for other articles about 109-64-8, you can contact me at any time and look forward to more communication. Name: 1,3-Dibromopropane.