Tuning the Electrocatalytic Performance of Ionic Liquid Modified Pt Catalysts for the Oxygen Reduction Reaction via Cationic Chain Engineering
By Zhang, Gui-Rong; Wolker, Thomas; Sandbeck, Daniel J. S.; Munoz, Macarena; Mayrhofer, Karl J. J.; Cherevko, Serhiy; Etzold, Bastian J. M.
Published in ACS Catalysis
2018
Abstract
Modifying Pt catalysts using hydrophobic ionic liquids (ILs) has been demonstrated to be a facile approach for boosting the performance of Pt catalysts for the oxygen reduction reaction (ORR). This work aims to deepen the understanding and initiate a rational molecular tuning of ILs for improved activity and stability. To this end, Pt/C catalysts were modified using a variety of 1-methyl-3-alkylimidazolium bis(trifluoromethanesulfonyl)imide ([CnC1im][NTf2], n = 2