可穿戴、可植入设备中，一些贴合于关节、整合到衣物内等器件对锂电池提出了可弹性拉伸新需求。然而，拉伸大形变会显著改变电池微观结构，相比柔性电池提出了更高挑战。目前已有可拉伸电池报道，但多侧重于可拉伸性的实现方法，提高各部件本征弹性研究较少，缺失各部位弹性材料一体化研究。所得电池仍存在容量衰减明显、负载低等问题。特别是相关基础研究欠缺，缺少电池发生拉伸大形变时对结构与性能关系的认知，离子、电子传导速率如何在拉伸时维持稳定的研究等。因此，申请者希望通过聚合物链序列结构调控、统一设计导电聚合物弹性体、电极粘结剂、聚合物电解质等弹性材料，在实现电池各部件本征弹性的同时得到一体化全电池；首次建立拉伸过程中结构与性能实时、原位分析方法，实现上述基础问题的研究，获取本征可弹性拉伸、性能稳定全电池。对可拉伸电池、充放电时体积变化显著的高比能电池发展有积极促进作用，对认知锂电池结构与性能关系有重要科学意义。

Some of the wearable and implantable devices put forward a new demand of elastic stretchability on the lithium batteries, e.g. some devices which are attached to the joints or integrated into the clothing. However, the large deformation during the stretch will significantly change the microstructure of the batteries, proposing much higher challenges compared with flexible batteries. At present, there have been some reports on stretchable batteries, but most of them focused on the methods to achieve stretchability. Only a small amount of them tried to improve the intrinsic elasticity of each component. No studies have been carried out to integrate these elastic materials in all parts. The stretchable batteries obtained are still facing problems inducing fast capacity fading, low active materials loading etc. In particular, the related fundamental research is missing. The knowledge on the relationship between its structure and performance of the battery during the stretch is absent. The method to maintain the same ion and electron transfer rate during the stretch is absent. Therefore, the applicant plans to design and prepare the conductive polymer elastomer, electrode binder, polymer electrolyte and other elastic materials through controlling the polymer chain sequence. Stretchable battery will be achieved with all of its compounds having intrinsic elasticity. The real-time, in-situ analysis methods on the battery structure and performance during the stretch will be established for the first time to carry out the fundamental research as mentioned above. Intrinsically elastic stretchable battery will be achieved with stable performance. This work will promote the development of stretchable batteries and high-capacity batteries which are suffering from the large electrode volume change during the charge and discharge process. It also has scientific significance in understanding the relationship between lithium battery structure and performance.