Flexible energy storage devices have received much attention owing to their promising applications in rising wearable electronics. By virtue of their high designability, light weight, low cost, high stability, and mechanical flexibility, polymer materials have been widely used for realizing high electrochemical performance and excellent flexibility of energy storage devices. In this review, flexible energy storage devices including supercapacitors and batteries are firstly introduced briefly. Then the design requirements and specific applications of polymer materials as electrodes, electrolytes, separators, and packaging layers of flexible energy storage devices are systematically discussed with an emphasis on the material design and device performance. The remaining challenges and future directions are finally summarized to guide future studies on the development of polymer materials for flexible energy storage devices.

柔性储能器件因其在新兴可穿戴电子产品中的应用前景而受到广泛关注。聚合物材料凭借其高可设计性、轻质、低成本、高稳定性和机械灵活性，已被广泛用于实现储能装置的高电化学性能和优异的灵活性。本文首先简要介绍了包括超级电容器和电池在内的柔性储能器件。然后系统地讨论了聚合物材料作为柔性储能器件的电极、电解质、隔膜和封装层的设计要求和具体应用，重点关注材料设计和器件性能。