The continuous flexible three dimensional curly carbon-based hybrid nanofibers with good resilience and electrochemical performance. (5th June 2018)

• Record Type: Journal Article
• Authors: Wang, Ning; Han, Shan; Liu, Long; Lu, Kezhen; Zhang, Xingxiang
• Is Part Of: Materials & design. Volume 147(2018)
• Page Start: 114
• Page End: 121
• Publication Date: 2018-06-05
• Subjects: Flexibility -- C1−XNXTi -- TiN hybrid nanofibers -- Electrochemical performance; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2018.03.012
• Languages: English
• ISSNs: 0264-1275

Abstract

Highlights: Compared with other TiN electrode materials with approximately pore size, our TiN hybrid nanofibers exhibit higher discharge capacity. After two-step heat treatment, a little graphene is formed around the inorganic matter. The hybrid nanofibers prepared by airspinning have superior flexibility, leading to quick shape recovery when the load is removed. TiN hybrid nanofibers present good electrochemical performance due to the excellent chemical durability of TiN and the transformation of ion transport channel. Graphical abstract: Unlabelled Image Abstract: Continuous flexible three dimensional curly carbon-based hybrid nanofibers are prepared via airspinning followed by heat treatment under different atmosphere. The as-prepared hybrid nanofibers are disordered and show fluffy structure, which endows the hybrid nanofibers with good elasticity after heat treatment. The effect of low temperature carbonization on the formation of different carbon-based hybrid nanofibers is investigated based on different heat treatment methods. Moreover, through the carbothermic reaction between TiO2 and amorphous carbon (or N2 ), inorganic nanoparticles which are homogeneously distributed in the nanofibers (or on the surface of the nanofibers) can be obtained. Meanwhile, a little graphene is formed around these inorganic compounds. In addition, the TiC, C0.7 N0.3 Ti and TiN hybrid nanofibers all present high discharge capacity and good cyclic stability. Compared with other TiN hybrid nanofibers reported before, our TiN hybrid nanofibers show higher discharge capacities of 251 mA h g −1 at a current density of 0.1 A g −1 in the first cycle. Furthermore, the as-prepared TiN hybrid nanofibers possess good cyclic stability with the capacity retention about 91.8% after 100 cycles. The good electrochemical performance and excellent flexibility promote TiN hybrid nanofibers to be a promising and alternative in many applications such as electronic devices.