All-in-one fiber for stretchable fiber-shaped tandem supercapacitors

An all-in-one crystallized polymer fiber with high conductivity, high flexibility and high capacitance is developed and used to fabricate stretchable fiber-shaped supercapacitors which can simultaneously realize electrical conduction and energy storage. The stretchable fiber-shaped tandem supercapacitors with high stretchability, high-voltage output and high energy densities represent a new family of promising power systems for wearable electronics.235