Discharged Na5V12O32 Nanowire Arrays Coated with Cu-Cu2O for High Performance Lithium-Ion Batteries. Issue 11 (26th November 2021)

• Record Type: Journal Article
• Authors: Yang, Guangjie; Cui, Mengmeng; Han, Tao; Fang, Dong; Lu, Xingjie; Peng, Sui; Ruzimuradov, Olim; Yi, Jianhong
• Is Part Of: Journal of the Electrochemical Society. Volume 168:Issue 11(2021)
• Publication Date: 2021-11-26
• Subjects: Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/1945-7111/ac39dc
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Sodium vanadate have been widely used as a lithium-ion battery anode. However, its further application is restricted by the capacity attenuation during cycles because of its easy solubility in electrolyte, huge structural change, and low conductivity. Here, a lithium-ion battery electrode based on Cu-Cu2 O coated Na5 V12 O32 nanowire arrays using a predischarge-electrodeposition method is freported. Remarkably, in the Cu-Cu2 O@Na5 V12 O32 electrode, the Na5 V12 O32 nanowires function as the skeleton, and Cu-Cu2 O nanoparticles function as the coating layer. At a specific current of 50 mA g −1, the composite electrode exhibits discharge and charge capacity of 837 and 821 mAh g −1 after 80 cycles, respectively, which is much higher than that of the Na5 V12 O32 nanowires electrode. This research provides a new pathway to explore electrode materials with enhanced electrochemical performance.