Porous V2O5 nanofibers as cathode materials for rechargeable aqueous zinc-ion batteries

• 作者: Fangyi Cheng Hang Li Jun Chen Liubin Wang Xuyong Chen
• 来源期刊: 能源化学
• 年，卷（期）: 2019,（11）
• 页码范围: 20-25
• 页数: 6页
• 语种: 英文

摘要

Rechargeable aqueous zinc-ion batteries are recently gaining incremental attention because of low cost and material abundance,but their development is plagued by limited choice of cathode materials with satisfactory cycling performance.Here,we report a porous V2O5 nanofibers cathode with high Znstorage performance in an aqueous Zn(CF3SO3)2 electrolyte.We propose a reaction mechanism based on phase transition from orthorhombic V2O5 to zinc pyrovanadate on first discharging and reversible Zn2+ (de)intercalation in the open-structured hosts during subsequent cycling.This open and stable architec-ture enables a high reversible capacity of 319 mAh g-1 at 20 mA g-1 and a capacity retention of 81％ over 500 cycles.The remarkable electrochemical performance makes V2O5 a promising cathode for aqueous zinc-ion batteries.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Xuyong Chen		1	0	0.0	0.0
2	Liubin Wang		1	0	0.0	0.0
3	Hang Li		1	0	0.0	0.0
4	Fangyi Cheng		1	0	0.0	0.0
5	Jun Chen		1	0	0.0	0.0