Cover Image, Volume 2, Number 2, June 2020

Cover image: Li-I2 battery could deliver higher energy and power density than some existing Li-ion batteries. In order to realize such a tremendous potential, a carbon energy research team by Shanqing Zhang at Griffith University developed a simple “salty” thermal treatment to convert a coffee extract into a functional honeycomb-like carbon materials as an interlayer (article number 10.1002/cey2.40) to overcome the inherent barriers of Li-I2 battery, i.e., inhibit the dissolution and the shuttle of iodine. Consequently, the as-prepared Li-I2 battery achieved high energy and power density performance with excellent cycle stability.