ABSTRACT The development of flexible electronics is causing a high demand for energy storage devices that provide high energy density and reliable mechanical performance. This review summarizes recent progress in high‐energy‐density flexible batteries, focusing on the emerging material systems, including dynamic bonding network electrolytes, biomass‐derived electrodes, MOF‐confined active materials, and flexible substrates, along with structural designs such as self‐supporting electrode architectures, gradient buffering layers, and heterogeneous interface engineering. Particularly, it summarizes how machine learning‐assisted intelligent manufacturing enables precise optimization of green processes (screen printing, electrospinning) and facilitates new energy enhancement mechanisms (photoelectric collaborative catalysis, intelligent thermal management), toward the controllable fabrication of high‐performance flexible batteries. Moreover, this article also looks forward to the application prospects of flexible batteries in wearable devices, medical electronics, and special equipment, and points out the current technical challenges and future development directions, providing important references for promoting the practical application process of flexible energy storage devices.
Wang et al. (Sun,) studied this question.
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