Issue 26, 2023

A Y-doped P2-Na0.6Li0.11Fe0.27Mn0.62O2 cathode with improved high-rate capability and cycling stability for Na-ion batteries

Abstract

P2-Na0.6Li0.11Fe0.27−xMn0.62YxO2 (x = 0, 0.5%, 1%, and 2%) cathode materials were successfully prepared using a traditional solid-state method with ball milling-assisted modification. The effect of Y-doping on the crystal structure, grain size, morphology and sodium storage performance of Na0.6Li0.11Fe0.27Mn0.62O2 was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), galvanostatic charge–discharge cycling tests, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results demonstrated that the ball-milling pre-treatment method could effectively reduce the grain size and mitigate the aggregation of Na0.6Li0.11Fe0.27Mn0.62O2. Additionally, reasonable Y-doping (x = 1%) significantly enhances the rate capability and cycling stability of Na0.6Li0.11Fe0.27Mn0.62O2via improving the Na+ diffusion kinetics and the reversibility of the oxygen redox reaction. These results indicate that Na0.6Li0.11Fe0.26Mn0.62Y0.01O2 is a promising candidate material for high-rate and long-life cathodes for Na-ion battery application.

Graphical abstract: A Y-doped P2-Na0.6Li0.11Fe0.27Mn0.62O2 cathode with improved high-rate capability and cycling stability for Na-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
29 Apr 2023
Accepted
30 May 2023
First published
31 May 2023

New J. Chem., 2023,47, 12109-12116

A Y-doped P2-Na0.6Li0.11Fe0.27Mn0.62O2 cathode with improved high-rate capability and cycling stability for Na-ion batteries

M. Cao, R. Li, F. Huang, X. Cai, M. Cui, S. Lin, J. Tian, Y. Jiang, Z. Shadike and Z. Fu, New J. Chem., 2023, 47, 12109 DOI: 10.1039/D3NJ01980B

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