On frogs, tadpoles and better batteries

My vast ignorance of chemistry doesn’t allow me to talk about this article, so here I leave you the abstract:

“Trapping negative charges in polymer electrolytes using a frog‐shaped, ether‐functionalized anion (EFA) is presented by H. Zhang, J. Carrasco, M. Armand, and co‐workers in their Communication on page 12070 ff. The bis(trifluoromethanesulfonyl)imide anion (TFSI), shown as a slippery tadpole, is highly mobile in poly(ethylene oxide) (PEO) matrix. In contrast, the ethylene oxide legs in EFA endow trapping interactions between the anion and PEO, which suppresses mobility”. [read more]

I did this picture on request and under close supervision of Dr. Heng Zang and Dr. Javier Carrasco (CIC Energigune, Spain). It deserved the inside cover of Angewandte Chemie (two in a row!).