For potential applications in porta

For potential applications in portable and wearable optoelectronics, conventional supercapacitors are too heavy and bulky. To address these challenges, a few optically transparent, mechanically stretchable, and/or wearable wire-shaped supercapacitors have been developed based on limited electrode materials. The wire-shaped supercapacitors and the integrated self-powering systems play important roles in the development of flexible wearable optoelectronics. Aligned CNTs and/or graphene films with high transparency, stretchability, and charge mobility are promising electrodes for transparent, flexible, and/or stretchable supercapacitors, although it is still in the initial research stage. Continued research efforts in this embryonic field could give birth to a flourishing area of supercapacitor technologies.