Back Cover: Poly(Alkyl‐Terphenyl Piperidinium) Ionomers and Membranes with an Outstanding Alkaline‐Membrane Fuel‐Cell Performance of 2.58 W cm −2 (Angew. Chem. Int. Ed. 14/2021)

Poly(alkyl-terphenyl piperidinium) ionomers and membranes were used for H2–O2 anion exchange membrane fuel cells, and achieved a high power density of 2.58 W cm−2, which is a new record for polyaromatic-based fuel cells. Details of the study are described by Young Moo Lee and co-workers in their Research Article on page 7710.