Gamma-irradiated carbon nanotube yarn as substrate for high-performance fiber supercapacitors.
As an electrical double layer capacitor, dry-spun carbon nanotube yarn possesses relatively low specific capacitance. This can be significantly increased as a result of the pseudocapacitance of functional groups on the carbon nanotubes developed by oxidation using a gamma irradiation treatment in the presence of air. When coated with high-performance polyaniline nanowires, the gamma-irradiated carbon nanotube yarn acts as a high-strength reinforcement and a high-efficiency current collector in two-ply yarn supercapacitors for transporting charges generated along the long electrodes. The resulting supercapacitors demonstrate excellent electrochemical performance, cycle stability, and resistance to folding-unfolding that are required in wearable electronic textiles.
School of Mechanical and Automotive Engineering, South China University of Technology , Guangzhou 510641, P. R. China.
Fenghua
F
Su
Menghe
M
Miao
Haitao
H
Niu
Zhixiang
Z
Wei