Aqueous zinc-based batteries are flexible, self-healing, self-charging, biocompatible, and biodegradable

Aqueous zinc-based batteries (AZBs) boast several advantages, including low cost, safety, and sustainability. They also possess features such as flexibility, self-healing, biocompatibility, self-charging, and integrability with other devices. We summarize the material design for self-charging AZBs, the device configuration of flexible and integrated AZBs, the action mechanism of self-healing and biocompatible AZBs, and the corresponding assessment methods. Future research directions for multifunctional AZBs are discussed in response to current challenges and practical demands.