Supercapacitors: A Fiber Supercapacitor with High Energy Density Based on Hollow Graphene/Conducting Polymer Fiber Electrode (Adv. Mater. 19/2016)

Hollow fiber electrodes based on graphene/conducting polymer are developed by J. Cheng, B. Wang, H. Peng, and co‐workers to fabricate novel and high‐performance fiber‐shaped supercapacitors. As described on page 3646, the hollow composite fiber supercapacitors have an ultra‐high specific capacitance of 304.5 mF cm−2 and an ultra‐high energy density of 27.1 μW h cm−2 at a power density of 66.5 μW cm−2. These mechanical and electrochemical properties make the fiber supercapacitors a promising material for next‐generation wearable electronics.