NDLI: Amphiphilic Block Copolymer Containing Quaternary Ammonium Cation for Anion Exchange Membrane

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Amphiphilic Block Copolymer Containing Quaternary Ammonium Cation for Anion Exchange Membrane

Content Provider	Semantic Scholar
Author	Li, Yifan Herring, Andrew M. Knauss, Daniel M.
Copyright Year	2014
Abstract	Introduction Alkaline fuel cells (AFCs) using anion exchange membranes (AEMs) as electrolyte have recently received considerable attention.[1, 2] AFCs offer some advantages over proton exchange membrane fuel cells, including the potential of non-noble metal (e.g. nickel, silver) catalyst[3] on the cathode, which can dramatically lower the fuel cell cost. The main drawback of traditional AFCs is the use of liquid electrolyte (e.g. aqueous KOH), which can result in the formation of carbonate precipitates by reaction with carbon dioxide. AEMs with tethered cations can overcome the precipitates formed in traditional AFCs. A desired polymer membrane for AEM not only requires the stable anion transport functional group, but also the robust polymer backbone in alkaline environment. Polyethylene is promising as a membrane material for AEM due to its high chemical and mechanical stability as well as its processability. Currently, amphiphilic block copolymers containing quaternary ammonium cation are an interesting class of AEMs and have potential application in AFCs. Living polymerization is one powerful method to form these unique structures. This method not only results in controlled molecular weight and molecular weight distribution, but also good phase separation, which is particularly useful for morphology control. . In this study, we have investigated the preparation of. Polybutadiene-bpolyvinylbenzyl chloride (PB-b-PVBC) block copolymer precursor synthesized by sequential living anionic and controlled radical polymerizations. The polybutadiene block can be hydrogenated to polyethylene-like block and the polyvinylbenzyl chloride block can be eventually converted to an ion conductive block.
Starting Page	307
Ending Page	313
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1149/05901.0307ecst
Volume Number	59
Alternate Webpage(s)	https://ecs.confex.com/data/abstract/ecs/ecee2014/Paper_33254_abstract_13170_0.pdf
Alternate Webpage(s)	https://doi.org/10.1149/05901.0307ecst
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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