Abstract
Flexible electronics have attracted a broad attention according to their desirable mechanical deformation capabilities, such as bend, fold and stretch. The flexible electronic technique has been widely applied in the field of flexible display, hemispherical electronic eye digital cameras, smart surgical gloves, intelligent sensors, implantable medical devices and epidermal electronic system, which can achieve multi-functional integration of information collecting, delivering, sharing, and feedback to human bodies efficiently. However, the inferior performance for flexible energy storage devices is still a major bottleneck to limit the development of flexible electronics.
Flexible batteries and supercapacitors have attracted tremendous attention due to their distinguished electrochemical energy storage performance and promising practical applications in portable electronics. However, the materials phase transition and volume expansion during electrochemical process will lead to passivation and exfoliation of e