阴极
材料科学
X射线光电子能谱
扫描电子显微镜
锂(药物)
电化学
衍射
离子
锂离子电池
电池(电)
化学工程
分析化学(期刊)
复合材料
化学
电极
光学
色谱法
物理化学
物理
工程类
内分泌学
功率(物理)
医学
有机化学
量子力学
作者
Ga-hee Kang,Ko-Woon Lee,Kyungjung Kwon,Jun-Ho Song
出处
期刊:Metals
[MDPI AG]
日期:2017-09-26
卷期号:7 (10): 395-395
被引量:19
摘要
LiNixCoyMnz (NCM), one of the most promising candidates for high-capacity cathode materials in Li-ion batteries (LIBs), is synthesized with various amounts of Sn. Sn-incorporated NCM from the resynthesis of NMC in leach liquor containing Sn from spent LIBs is characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, particle strength tests, and electrochemical tests. Sn-incorporated NCM has a globular form, and the uniform distribution of Sn inside cathode materials is confirmed. As Sn is introduced, the (003) diffraction peak tends to shift to a smaller angle and particle breaking strength increases. It is found that Sn-incorporated cathode active materials have better cycle performance and rate capability than pristine cathode active material although the discharge capacity slightly decreases. Because there is a trade-off between decreased discharge capacity and improved cycling and rate performance, the incorporation of Sn in resynthesized NCM should be carefully designed and conducted.
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