devices is PDMS. However, it possesses hydrophobic properties. Electrode materials with binder like PVDF covered on the PDMS usually need to face the detaching problem, which is not of benefit to the mechanical stability of the devices. A stretchable substrate that ensures electrode materials direct growth on it may be a great way to develop stretchable devices. (iii) More attention should be focused on the development of air stable gel electrolyte. Most of the existing all‐solid‐state gel electrolyte is water‐based polymer gel electrolyte, which have a short lifespan under air ambient conditions. How to improve the lifespan of the water‐based gel electrolyte in the further development of stretchable SCs must be a significant topic. (iv) The integration and encapsulation method is important for wearable integrated system. For the stretchable multifunctional integrated systems powered by SCs containing several kinds of stretchable devices, the integration and encapsulation method that makes every component work tuneful must be considered. The embedding method is a mature way but can't be the only one for packaging the integrated system. (v) More low‐cost fabrication technology for large scale production of stretchable SCs should be introduced to meet the requirement of the practical application. From the angle of actual application, the large‐scale production of stretchable SCs with low cost also should be considered. Overall, stretchable SCs have been proved as a promising energy storage to power the portable and wearable electronics and occupy an indispensable position in the future development and applications of wearable electronics.
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