Abstract
[This corrects the article DOI: 10.1002/advs.201801114.].
Highlights
Storage devices have become an important component of modern electronics.[1,2,3,4,5] As one of the most promising power sources, electrochemical supercapacitors have been widely used in wearable electronics due to their high power density, excellent reversibility, large capacity, low cost, and long lifecycle.[6,7,8,9,10] their low energy density has limited their further development in many fields
The active materials play a key role in an electrochemical supercapacitive system, and many efforts have been dedicated in recent years to the development of various electrochemically active substances and smart designs in fiber-shaped asymmetric supercapacitors (FASCs) devices to enable wearable and flexible electronic devices
A high-performance, 3D printed, fiber-shaped integrated electronic device was fabricated. In this energy storage and conversion configuration, a FASCs device with a maximum operating voltage of 1.6 V was assembled by twisting a single-walled carbon nanotube (SWCNT)/V2O5 fiber cathode and an SWCNT/ VN fiber anode
Summary
A series of procedures were executed to fabricate the 3D-printed FASC device. First, the V2O5 and VN samples (fabricated by electrospinning method) and the structure characterization (field emission scanning electron microscopic (FESEM) and transmission electron microscopic (TEM) images) depicted in Figure S1 (Supporting Information), were added to the solution with an SWCNT conductive additive to obtain the ideal preprinted positive and negative inks (the details in the Experimental Section), respectively. For the V2O5/SWCNT fiber positive electrode, the maximum areal capacitance value at 0.5 mA cm−2 is 587.93 mF cm−2, and a specific capacitance of 440 mF cm−2 is obtained at the current density of 6.4 mA cm−2, which indicates good rate capability (Figure S8c, Supporting Information). A quasirectangular shape is observed in the CV curves (Figure 3b) of the assembled FASC device, which shows ideal capacitive behavior from the synergistic effects of the two fiber-shaped electrodes.[11] The CV, GCD, and electrochemical impedance spectroscopic images were surveyed to further investigate the electrochemical performance of the as-fabricated device.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
