In situ microscopic studies on the structural and chemical behaviors of lithium-ion battery materials
In situ microscopic studies on the structural and chemical behaviors of lithium-ion battery materials
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DOI：
10.1016/j.jpowsour.2014.07.123
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发表时间：
2014-12
影响因子：
9.2
通讯作者：
M. Shao
中科院分区：
文献类型：
--
作者：
M. Shao
直接观察活性物质的微观结构演变和荷电状态(SOC)分布对于理解锂离子电池(LiBS)电化学循环过程中的锂/脱锂机理是至关重要的。由于其高的空间分辨率和结合其他光谱技术绘制化学状态的能力，包括X射线荧光显微镜(XRF)、拉曼显微镜、透射X射线显微镜(TXM)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)在内的微观技术在实时监测LiB电极和材料的动态变化方面发挥了重要作用。本文综述了利用原位显微技术研究锂离子电池正极材料的最新进展，包括硅基、锡基、锗基、碳基和金属氧化物基负极材料，层状硫氧化物、金属氟化物、LiCoO2、Li0.8Co0.15Al0.05O2、LiMn2O4、LiFePO4正极材料。
The direct observation of the microstructural evolution and state-of-charge (SOC) distribution in active materials is crucial to understand the lithiation/delithiation mechanisms during electrochemical cycling of lithium-ion batteries (LIBs). Owing to their high spatial resolutions and capability to map chemical states by combining other spectroscopic techniques, microscopic techniques including X-ray fluorescence (XRF) microscopy, Raman microscopy, transmission X-ray microscopy (TXM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) play significant roles in real time monitoring the dynamic changes in the LIB electrodes and materials. This paper reviews the recent progress of usingin situmicroscopic techniques to study LIB materials, including Si-, Sn-, Ge-, C- and metal oxides-based anode materials, and layered oxysulfide, metal fluorides, LiCoO2, LiNi0.8Co0.15Al0.05O2, LiMn2O4, LiFePO4cathode materials.