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- Title
Preparation and Electrochemical Properties of LiNi 2/3 Co 1/6 Mn 1/6 O 2 Cathode Material for Lithium-Ion Batteries.
- Authors
Zhu, Meijie; Li, Jiangang; Liu, Zhibei; Wang, Li; Kang, Yuqiong; Dang, Zhaohan; Yan, Jiasen; He, Xiangming; Vertova, Alberto
- Abstract
The cathode material LiNi2/3Co1/6Mn1/6O2 with excellent electrochemical performance was prepared successfully by a rheological phase method. The materials obtained were characterized by X-ray diffraction, scanning electron microscopy, electrochemical impedance spectroscopy and charge-discharge tests. The results showed that both calcination temperatures and atmosphere are very important factors affecting the structure and electrochemical performance of LiNi2/3Co1/6Mn1/6O2 material. The sample calcinated at 800 °C under O2 atmosphere displayed well-crystallized particle morphology, a highly ordered layered structure with low defects, and excellent electrochemical performance. In the voltage range of 2.8–4.3 V, it delivered capacity of 188.9 mAh g−1 at 0.2 C and 130.4 mAh g−1 at 5 C, respectively. The capacity retention also reached 93.9% after 50 cycles at 0.5 C. All the results suggest that LiNi2/3Co1/6Mn1/6O2 is a promising cathode material for lithium-ion batteries.
- Subjects
LITHIUM-ion batteries; CATHODES; SCANNING electron microscopy; IMPEDANCE spectroscopy; FACTOR structure; X-ray diffraction
- Publication
Materials (1996-1944), 2021, Vol 14, Issue 7, p1766
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma14071766