Stabilizing the Imidazolium Cation in Hydroxide‐Exchange Membranes for Fuel Cells
2013; Wiley; Volume: 6; Issue: 11 Linguagem: Inglês
10.1002/cssc.201300285
ISSN1864-564X
AutoresJunhua Wang, Shuang Gu, Robert B. Kaspar, Bingzi Zhang, Yushan Yan,
Tópico(s)Advancements in Solid Oxide Fuel Cells
ResumoStable and able: The hydroxide-conducting cationic functional group used in the hydroxide-exchange membranes of fuel cells is key to controlling chemical stability and solubility. A new imidazolium cation, 1,4,5-trimethyl-2-(2,4,6-trimethoxyphenyl)imidazolium, is designed to take advantage of both strong electron-donation properties and steric hindrance. Synergy between these two effects leads to an efficient hydroxide-exchange membrane, with increased alkaline stability and improved OH− conductivity.
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