A foldable self-healing rocking chair zinc-ion battery using a three-dimensional zinc metal-free anode.

We developed H 2 Ti 5 O 11 · x H 2 O on carbon cloth (HTO· x H 2 O/CC) as a binder-free Zn metal-free anode. This 'rocking chair' battery incorporated a ZnMn 2 O 4 /CC cathode, HTO· x H 2 O/CC anode, and a polyacrylamide-based electrolyte, and exhibited satisfactory flexibility and self-healing. It displayed recoverable capacities after four repetitions of cutting and healing, indicating a potential using as a foldable and wearable battery.