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首页> 外文期刊>Carbon: An International Journal Sponsored by the American Carbon Society >Comparative study of the solid electrolyte interphase on graphite in full Li-ion battery cells using X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and electron microscopy
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Comparative study of the solid electrolyte interphase on graphite in full Li-ion battery cells using X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and electron microscopy

机译：使用X射线光电子能谱，二次离子质谱和电子显微镜对全锂离子电池中石墨上的固体电解质相进行比较研究

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摘要

Commercial lithium-ion cells with LiMn_(1/3)Ni_(1/3)Co_(1/3)O2 as the positive electrode, graphite as the negative electrode and a LiPF6-EC:PC:DEC electrolyte were cycled under several conditions, and the solid electrolyte interphase (SEI) on the graphite electrode was studied. Nuclear magnetic resonance (NMR) spectroscopy confirmed that LiPF6-EC:PC:DEC electrolyte was used in the cell and the relative volume ratio between solvents was acquired via quantitative NMR. Secondary ion mass spectrometry, X-ray photoelectron spectroscopy, and a dual-beam focused ion beam/scanning electron microscope have been used to characterize the thickness, morphology and chemical composition of complex SEI on graphite anodes. The advantages and limitations of the characterization techniques are discussed and the results compared to provide a more comprehensive analysis of the SEI.
机译：以LiMn_（1/3）Ni_（1/3）Co_（1/3）O2为正极，石墨为负极和LiPF6-EC：PC：DEC电解质的市售锂离子电池在几种条件下循环，并研究了石墨电极上的固体电解质相（SEI）。核磁共振（NMR）光谱证实在电池中使用了LiPF6-EC：PC：DEC电解质，并且通过定量NMR获得了溶剂之间的相对体积比。二次离子质谱，X射线光电子能谱和双束聚焦离子束/扫描电子显微镜已用于表征石墨阳极上复杂SEI的厚度，形态和化学组成。讨论了表征技术的优缺点，并对结果进行了比较，以提供对SEI的更全面分析。

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