Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5150237 | Journal of Power Sources | 2016 | 6 Pages |
Abstract
In this paper, we propose a facile strategy to synthesize the porous structure TiO2@C composites through a two-step method, in which the precursor of MIL-125(Ti) was firstly prepared by solvent thermal method and then calcined under inert atmosphere. When employed as anodes for Na ion batteries, TiO2@C composites can exhibit a superior cyclability with a reversible sodium storage capacity of 148 mAh gâ1 at the current density 0.5 A gâ1 after 500 cycles and an excellent rate performance with a capacity of 88.9 mAh gâ1 even the current reached to 2.5 A gâ1 due to the dispersion of anatase TiO2 throughout amorphous carbon matrix and the synergistic effect between the anatase TiO2 nanocrystals and carbon matrix, which can availably enhance the electric conductivity and alleviate the volumetric variation of TiO2 during the insertion/extraction process of Na+.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Xiaodong Shi, Zhian Zhang, Ke Du, Yanqing Lai, Jing Fang, Jie Li,