|
Preparation and Lithium Storage Properties of Grid-like SnO2 Fibers |
Author Name | Affiliation | E-mail | YU Ji | College of Chemistry, Nanchang University, Nanchang 330031, China | yuji@ncu.edu.cn | WEI Hai-Yan | College of Chemistry, Nanchang University, Nanchang 330031, China | | LI Li | College of Chemistry, Nanchang University, Nanchang 330031, China | | YANG Zhen-Yu | College of Chemistry, Nanchang University, Nanchang 330031, China | | CAI Jian-Xin | College of Chemistry, Nanchang University, Nanchang 330031, China | |
|
Abstract: SnO2 fibers and SnO2-C fibers were synthesized through electrospun technology and calcined under air or Ar atmosphere. Samples were characterized by different methods. The results showed that SnO2 fibers and SnO2-C fibers have a grid-like structure, which can effectively alleviate the disadvantages caused by the huge volume change of SnO2 during charging-discharging process. SnO2-C fibers showed a better electrochemical performance than SnO2 nanoparticles, but worse than that of SnO2 fibers. SnO2 fibers could discharged a much high capacity and had a good rate performance and long cycle life at the same time. After working at the current density of 0.4, 0.8, 1.6, 2.4 A·g-1 and 4 A·g-1 for 10 cycles, SnO2 fibers could still discharge a capacity of 1 372, 832, 685, 642 and 599 mAh·g-1. And when the current density went back to 0.4 A·g-1, its capacity could arrive 1 113 mAh·g-1 again. Furthermore, the SnO2 fibers could also release a high discharge capacity of 613 mAh·g-1 and almost 100% coulomb efficiency after 200 cycles at the current density of 1.6 A·g-1, showing an excellent electrochemistry performance. |
Keywords: lithium-ion battery SnO2 fibers SnO2-C fibers anode material electrospinning |
Hits: 1337 |
Download times: 594 |
YU Ji,WEI Hai-Yan,LI Li,YANG Zhen-Yu,CAI Jian-Xin.Preparation and Lithium Storage Properties of Grid-like SnO2 Fibers[J].Chinese Journal of Inorganic Chemistry,2018,34(10):1792-1798. |
View Full Text View/Add Comment Download reader |
|
|
|
|
|