Recent Advances on Self‐Healing Materials and Batteries

Self‐healing is a concept to imitate the healing of biological damage and is considered to be an important property of next‐generation smart materials. With a huge breakthrough of self‐healing materials in recent years, many devices with integrated self‐healing ability are promising due to their intelligence and durability. Among them, self‐healing batteries have attracted ever‐growing interest due to their remarkable electrochemical performance and broad application prospects. In this article, the state‐of‐the‐art progress in self‐healing materials and batteries are summarized. First, this review introduces the main self‐healing mechanisms and corresponding materials. Second, various self‐healing batteries including micro and macro self‐healing, are discussed, about their self‐healing principles, fabrication techniques, and self‐healing performances. Finally, existing challenges and future opportunities are discussed in this thriving field.