电源技术2017，Vol.41Issue(12)：1694-1697,1759,5.
电沉积制备Ni-P化合物及其电化学性能
Electrodeposition and electrochemical performance of Ni-P compounds
武永鑫 1赵星 2庄全超2
作者信息
- 1. 亳州学院,安徽亳州236800
- 2. 中国矿业大学材料科学与工程学院,江苏徐州221116
- 折叠
摘要
Abstract
Ni-P compounds anode materials were prepared by electrodeposition.The morphology,composition and electrochemical performance were characterized by scanning electron microscopy (SEM),X-ray dispersive spectrum analysis (EDS),charge/discharge test,cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS).The results show that the capacity and cyclic performance of Ni-P compounds anode materials are affected by heat treatment temperature and particle size of active materials.The first charge capacity of Ni-P compounds anode materials is 407 mAh/g which is much less than the first discharge capacity (862 mAh/g).Most of the capacity loss can attribute to the formation of a highly irreversible poor lithium phase.EIS combined with SEM and CV analysis points out that the important reasons of initial large irreversible capacity and capacity fade are poor electrical conductivity of the active material and the rupture and reformation of solid electrolyte interface (SEI) film caused by volume expansion of the Ni-P compounds anode materials during the conversion reaction.关键词
电沉积法/Ni-P化合物/锂离子电池/电化学阻抗谱Key words
electrodeposition/Ni-P compounds/Li-ion batteries/electrochemical impedance spectroscopy分类
信息技术与安全科学引用本文复制引用
武永鑫,赵星,庄全超..电沉积制备Ni-P化合物及其电化学性能[J].电源技术,2017,41(12):1694-1697,1759,5.
