天津工业大学学报2023，Vol.42Issue(6)：54-59,66,7.DOI:10.3969/j.issn.1671-024x.2023.06.008
Cu掺杂FeP粉末负极材料的制备及其储钠性能
Preparation of Cu-doped FeP powder anode material and its sodium storage properties
摘要
Abstract
For the problem of the volume expansion and poor electrical conductivity of iron phosphide(FeP)in the process of charging and discharging,the further development of sodium ion anode materials is hindered.Cu addition is used as a straightforward technique to enhance the electrochemical performance of the anode by modulating the composition and phase constitution of FeP nanopowders generated via ball-milling method.The XRD results show that the addition of Cu reduces the crystallinity of FeP,but does not lead to the formation of other minor phases.After 200 cycles at 50 mA/g,the 5％Cu-FeP electrode shows the best electrochemical performance,with the capacity increasing by more than 100％,from 80 mA·h/g to 180 mA·h/g.The improvement in electro-chemical performance is attributed to the change in the microstructure of the powder and the increase in electrical conductivity.Under the synergistic action of the both factors,the volume expansion of FeP is reduced,and the electronic conductivity and electrochemical reversibility of the electrode are improved.This method provides a fresh perspective for the development of the next generation of metal phosphating anode materials.关键词
钠离子电池/磷化铁/铜掺杂/高速球磨/负极材料/储钠性能Key words
sodium ion battery/FeP/Cu doped/high speed ball-milling/anode material/sodium storage property分类
化学化工引用本文复制引用
张志佳,孙赫奕..Cu掺杂FeP粉末负极材料的制备及其储钠性能[J].天津工业大学学报,2023,42(6):54-59,66,7.基金项目
国家重点研发计划"高端功能与智能材料"重点专项(2021YFB3802200) （2021YFB3802200）
