Electrospun one-dimensional BaLi2Ti6O14 nanofibers for high rate performing lithium-ion battery. (October 2016)

• Record Type: Journal Article
• Authors: Wu, Xianzong; Li, Xing; Zhu, Congcong; Li, Peng; Yu, Haoxiang; Guo, Zhiyong; Shu, Jie
• Is Part Of: Materials today energy. Volume 1/2(2016)
• Page Start: 17
• Page End: 23
• Publication Date: 2016-10
• Subjects: Lithium ion battery -- Anode -- Electrospinning -- BaLi2Ti6O14 -- Nanofibers; Energy development -- Periodicals; Energy industries -- Periodicals; Power resources -- Periodicals; Energy policy -- Periodicals; Energy development; Energy industries; Energy policy; Power resources; Electronic journals; Periodicals; 621.042
• DOI: 10.1016/j.mtener.2016.11.002
• Languages: English
• ISSNs: 2468-6069

Abstract

Abstract: Ultralong BaLi2 Ti6 O14 nanofibers constructed from attached nanoparticles, as be an excellent candidate of long cycle life and good rate capability anode material of lithium-ion batteries for future applications in portable electronics, electric vehicles and grid storage, are prepared through electrospinning and subsequent annealing. The obtained materials are characterized by powder X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, cyclic voltammetry and in situ X-ray diffraction. The unique one-dimensional nanomaterials used as an anode of lithium-ion batteries exhibit superior electrochemical performances: (i) excellent rate behavior (The charge capacities are 133.7, 127.2, 122.5, 119.1, 116.0 and 113.8 mAh g −1 at 100, 200, 300, 400, 500 and 600 mA g −1 separately); (ii) outstanding cycle performance (When the nanomaterials are cycled at 200, 500 and 1000 mA g −1 respectively, the initial charge capacities of 138.2, 137.3 and 140.2 mAh g −1 fade with the corresponding average rate of 0.528‰, 0.197‰ and 0.153‰ per cycle until the 200th, 400th and 800th cycles). The results above reveal the great potential of the BaLi2 Ti6 O14 nanofibers as a practical anode for high performance lithium ion batteries. Graphical abstract: Highlights: BaLi2 Ti6 O14 nanofibers are prepared via electrospinning for the first time. BaLi2 Ti6 O14 nanofibers show superior electrochemical performance. 0.153‰ capacity loss per cycle can be delivered at 1000 mA g −1 . Structural reversibility of BaLi2 Ti6 O14 nanofibers is studied by in-situ XRD.