材料科学
锂(药物)
涂层
电化学
电解质
化学工程
粒子(生态学)
图层(电子)
阴极
纳米技术
电极
化学
物理化学
海洋学
地质学
工程类
内分泌学
医学
作者
Xunhui Xiong,Zhixing Wang,Huajun Guo,Qian Zhang,Xinhai Li
出处
期刊:Journal of materials chemistry. A, Materials for energy and sustainability
[The Royal Society of Chemistry]
日期:2013-01-01
卷期号:1 (4): 1284-1288
被引量:207
摘要
The cycling performance of a lithium-reactive V2O5 coated LiNi0.8Co0.1Mn0.1O2 material at 60 °C is substantially improved by a wet-coating process. The V2O5-coated materials are obtained from drying a mixture consisting of NH4VO3 and LiNi0.8Co0.1Mn0.1O2 powders dispersed in ethanol at 85 °C followed by firing at 300 °C for 5 h. The morphology of the V2O5-coated LiNi0.8Co0.1Mn0.1O2 particle synthesized by this coating process is characterized by SEM, TEM and EDX analysis. The V2O5 layer is homogeneously coated onto the particle and the coating thickness was found to be approximately 10–30 nm. The capacity improvement at 60 °C is related to the fact that the highly distributed V2O5 near the surface diminishes the side reactions between the cathode and electrolyte. Moreover, the improvements may also benefit from the unique structure and properties of V2O5.
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