Fabricating Continuous Supercapacitor Fibers with High Performances by Integrating All Building Materials and Steps into One Process

Supercapacitor fibers are rapidly produced in minutes by an integrated one‐step fabrication process. This method is simple and efficient for large production. A variety of pseudocapacitive active materials including graphene oxide, metal oxide, and conducting polymers can be incorporated. The resulting all‐solid‐state supercapacitor fibers show remarkable energy‐storage capabilities with both high power and energy densities.