Details

Autor(en) / Beteiligte

• Ming-Hui, Cao
• Ren-Yan, Li
• Huang, Fen-Fen
• Xin-Yin, Cai
• Cui, Miao
• Shi-Ya Lin
• Jing-Yang, Tian
• Yuan-Ping, Jiang
• Shadike, Zulipiya
• Zheng-wen, Fu

Titel

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

Ist Teil von

• New journal of chemistry, 2023-07, Vol.47 (26), p.12109-12116

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.