期刊
MATERIALS LETTERS
卷 185, 期 -, 页码 96-99出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.08.112
关键词
Lithium-ion battery; Functional; Composite materials; Nickel-rich lithium cobalt oxide; Iron trifluoride
资金
- Scientific Research Fund of Hunan Provincial Education Department, China [15B054]
- Scientific Research Foundation of Hunan Institute of Engineering, China [14004]
The surface of a LiNi0.8Co0.15Al0.05O2 cathode material is coated by a 10-20 nm thick FeF(3)layer using a solventing-out crystallization process. Scanning electron microscope (SEM) and X-ray diffraction (XRD) results demonstrate that the morphology and structure of LiNi0.8Co0.15Al0.05O2 are not affected by FeF3 layer. Electrochemical properties of bare and FeF3-coated LiNi0.8Co0.15Al0.05O2 are investigated at room and high temperatures. Compared with bare LiNi0.8Co0.15Al0.05O2, FeF3-coated LiNi0.8Co0.15Al0.05O2 shows higher discharge capacity and capacity retention at different rates at 25 degrees C, in addition to better cycle performance at 55 degrees C. Furthermore, differential scanning calorimetry (DSC) analysis shows that the existence of FeF(3)coating helps to enhance the thermal stability of LiNi0.8Co0.15Al0.05O2 (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据