Li2ZrO3-Coated Monocrystalline LiAl0.06Mn1.94O4 Particles as Cathode Materials for Lithium-Ion Batteries

• Published in: Nanomaterials (Basel, Switzerland) Vol. 11; no. 12; p. 3223
• Main Authors: Li, Chunliu, Zhao, Banglei, Yang, Junfeng, Zhang, Linchao, Fang, Qianfeng, Wang, Xianping
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 27-11-2021; MDPI
• Subjects: Batteries; cathode materials; Cathodes; Chemical synthesis; Coatings; Discharge; Electrochemical analysis; Electrochemistry; Electrode materials; Electrolytes; Grain growth; Grain size; Lithium; lithium manganese oxide; Lithium manganese oxides; lithium zirconium oxide; Lithium-ion batteries; monocrystallite; Morphology; Particle size; Rechargeable batteries; Retention; Room temperature; Scanning electron microscopy; Sintering; Synergistic effect
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano11123223

Li2ZrO3-coated and Al-doped micro-sized monocrystalline LiMn2O4 powder is synthesized through solid-state reaction, and the electrochemical performance is investigated as cathode materials for lithium-ion batteries. It is found that Li2ZrO3-coated LiAl0.06Mn1.94O4 delivers a discharge capacity of 110.90 mAhg−1 with 94% capacity retention after 200 cycles at room temperature and a discharge capacity of 104.4 mAhg−1 with a capacity retention of 87.8% after 100 cycles at 55 °C. Moreover, Li2ZrO3-coated LiAl0.06Mn1.94O4 could retain 87.5% of its initial capacity at 5C rate. This superior cycling and rate performance can be greatly contributed to the synergistic effect of Al-doping and Li2ZrO3-coating.