Fabrication of Various V2O5 Hollow Microspheres as Excellent Cathode for Lithium Storage and the Application in Full Cells.
Vanadium pentoxide (V2O5) has attracted interesting attention as cathode material for LIBs because of its stable crystal structure and high theoretical specific capacity. However, the low rate performance and poor long-term cycling stability of V2O5 limit its applications. In order to improve its battery performance, various V2O5 hollow microspheres including a yolk-shell structure, double-shell structure, triple-shell structure, and hierarchical hollow superstructures have been selectively prepared. The obtained hierarchical V2O5 hollow microspheres (HVHS) exhibit a high capacity of 123 mAh g(-1) at 20 C (1 C = 147 mA g(-1)) in the range of 2.5-4.0 V, and 73.5 mAh g(-1) can be reached after 3000 cycles. HVHS also display good cycling performance in the range of 2.0-4.0 V. Moreover, the V2O5//Li4Ti5O12 full cell was successfully assembled, which exhibits an excellent performance of 139.5 mAh g(-1) between 1.0 and 2.5 V at a current density of 147 mA g(-1), and a high capacity of 106 mAh g(-1) remained after 100 cycles, indicating the good cycling performance and promising application of the full cell.
Key Laboratory of Colloid & Interface Chemistry (Shandong University), Department of Chemistry, Ministry of Education , Jinan 250100, China.|Country College of Materials Science and Engineering, Taiyuan University of Technology , Taiyuan, Shanxi 030024, P. R. China.
Xiaochuan
X
Ren
Key Laboratory of Colloid & Interface Chemistry (Shandong University), Department of Chemistry, Ministry of Education , Jinan 250100, China.
Yanjun
Y
Zhai
Key Laboratory of Colloid & Interface Chemistry (Shandong University), Department of Chemistry, Ministry of Education , Jinan 250100, China.
Lin
L
Zhu
Key Laboratory of Colloid & Interface Chemistry (Shandong University), Department of Chemistry, Ministry of Education , Jinan 250100, China.
Yanyan
Y
He
Key Laboratory of Colloid & Interface Chemistry (Shandong University), Department of Chemistry, Ministry of Education , Jinan 250100, China.
Aihua
A
Li
Country College of Materials Science and Engineering, Taiyuan University of Technology , Taiyuan, Shanxi 030024, P. R. China.
Chunli
C
Guo
Key Laboratory of Colloid & Interface Chemistry (Shandong University), Department of Chemistry, Ministry of Education , Jinan 250100, China.
Liqiang
L
Xu
V2O5; full cell; hierarchical; high cycle performance; multishell