Zinc‐Ion Batteries: A Chemically Self‐Charging Flexible Solid‐State Zinc‐Ion Battery Based on VO2 Cathode and Polyacrylamide–Chitin Nanofiber Hydrogel Electrolyte (Adv. Energy Mater. 25/2021)

In article number 2003902, Wangwang Xu, Changtong Mei, Qinglin Wu and co-workers show that the robust tunnel structure of a vanadium dioxide cathode and the network of a polyacrylamide-chitin nanofiber hydrogel electrolyte provide efficient pathways for ion diffusion, leading to superior electrochemical performance of the corresponding solid-state zinc ion batteries (ssZIBs). The flexible ssZIBs demonstrate excellent self-rechargeability and superior reusability, which provides a facile route to portable self-powered systems.