In 2019,Journal of the American Chemical Society included an article by Kim, Yoonseob; Wang, Yanming; France-Lanord, Arthur; Wang, Yichong; Wu, You-Chi Mason; Lin, Sibo; Li, Yifan; Grossman, Jeffrey C.; Swager, Timothy M.. HPLC of Formula: 609-08-5. The article was titled 《Ionic Highways from Covalent Assembly in Highly Conducting and Stable Anion Exchange Membrane Fuel Cells》. The information in the text is summarized as follows:
A major challenge in the development of anion exchange membranes for fuel cells is the design and synthesis of highly stable (chem. and mech.) conducting membranes. Membranes that can endure highly alk. environments while rapidly transporting hydroxides are desired. Herein, we present a design using cross-linked polymer membranes containing ionic highways along charge-delocalized pyrazolium cations and homoconjugated triptycenes. These ionic highway membranes show improved performance. Specifically, a conductivity of 111.6 mS cm-1 at 80°C was obtained with a low 7.9% water uptake and 0.91 mmol g-1 ion exchange capacity. In contrast to existing materials, ionic highways produce higher conductivities at reduced hydration and ionic exchange capacities. The membranes retain more than 75% of their initial conductivity after 30 days of an alk. stability test. The formation of ionic highways for ion transport is confirmed by d. functional theory and Monte Carlo studies. A single cell with platinum metal catalysts at 80°C showed a high peak d. of 0.73 W cm-2 (0.45 W cm-2 from a silver-based cathode) and stable performance throughout 400 h tests. After reading the article, we found that the author used Diethyl 2-methylmalonate(cas: 609-08-5HPLC of Formula: 609-08-5)
Diethyl 2-methylmalonate(cas: 609-08-5) belongs to aliphatic hydrocarbons. Aliphatic hydrocarbons belong to the most abundant fraction in crude oil. Aliphatics molecules are linear or branched open-chain structures such as n-alkanes, isoalkanes, cycloalkanes (naphthenes), terpenes and steranes.HPLC of Formula: 609-08-5
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics