학술논문
Study on the different effects of aluminum doping on Fe-Mn and Ni-Mn based compounds as cathode material for sodium-ion batteries
Document Type
Article
Author
Source
Journal of Industrial and Engineering Chemistry, 124(0), pp.287-293 Aug, 2023
Subject
Language
English
ISSN
1876-794X
1226-086X
1226-086X
Abstract
Al-doped Fe-Mn and Ni-Mn based materials with P2-type layered structure has been synthesized andtested as a positive electrode material for rechargeable sodium batteries. The modification mechanismsof Al doping in Fe-Mn and Ni-Mn based materials have been discussed. The synthesized Al-doped Ni-Mnbased material Na0.67Mn0.8Ni0.16Al0.04O2 delivers a reversible capacity of 135.1 mAh g1, which correspondsto 92.1% of the initial capacity with excellent cyclability for 200 cycles. What’s more, it can stillremain a capacity of 96.2 mAh g1 at a current density of 2000 mA g1. When the voltage range increaseto 1.5 – 4.3 V, its initial discharge capacity can reach 190.3 mAh g1.