兴奋剂
材料科学
阴极
铝
钠
锰
电极
化学工程
电流密度
无机化学
离子
冶金
化学
物理化学
有机化学
光电子学
物理
量子力学
工程类
作者
Danlei Qiao,Yixuan Zhang,Chang Su,Guoqiang Liu,Qingxiang Wang,Wen Lei
标识
DOI:10.1016/j.jiec.2023.04.019
摘要
Al-doped Fe-Mn and Ni-Mn based materials with P2-type layered structure has been synthesized and tested as a positive electrode material for rechargeable sodium batteries. The modification mechanisms of Al doping in Fe-Mn and Ni-Mn based materials have been discussed. The synthesized Al-doped Ni-Mn based material Na0.67Mn0.8Ni0.16Al0.04O2 delivers a reversible capacity of 135.1 mAh g−1, which corresponds to 92.1% of the initial capacity with excellent cyclability for 200 cycles. What’s more, it can still remain a capacity of 96.2 mAh g−1 at a current density of 2000 mA g−1. When the voltage range increase to 1.5 – 4.3 V, its initial discharge capacity can reach 190.3 mAh g−1.
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