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【成电EMC2论坛 第017期】Quantitative Analysis of Three-dimensional Microstructure of Li-ion Battery Electrodes
发布日期:2018-07-02作者:管理员阅读次数:

题  目: Quantitative Analysis of Three-dimensional Microstructure of Li-ion Battery Electrodes


主讲人: 刘钊(博士/研发工程师)

主持人: 郝锋(教授)

时   间: 2018年7月10日(周二),10点00分

地   点: 沙河主楼332会议室


主讲人简介:

      刘钊,南京大学物理学本科,硕士,美国西北大学材料工程学博士, 现就职于美国嘉柏微电子公司担任研发工程师。 刘钊博士的主要研究方向为锂电池三维电极结构的定量分析及其构效关联性研究。 在博士期间,先后与美国阿贡国家实验室以及布鲁克海文国家实验室开展合作,应用同步辐射光源对电池电极材料进行三维结构表征及研究。曾在Nature Nanotechnology, Journal of the American Chemical Society, Advanced Functional Materials, Journal of Power Sources发表论文10余篇,引用~800余次。现担任Energy Environmental Sciences, Advanced Energy Materials, ACS Applied Materials & Interfaces等高水平杂志审稿人,曾获2017教育部自然科学一等奖(第八完成人)。


讲座内容:

       Li-ion batteries (LIBs) have attracted considerable attention in the past two decades due to their widespread applications in portable electronics, and their growing use in electric vehicles and large-scale grid storage. Increasing battery energy density and powder density while maintaining long life, along with battery safety, are the biggest challenges that limit their further development. To date, one less-studied aspect that impacts performance is the electrode microstructure, particularly, the three-dimensional (3D) electrode microstructural data for LIB electrodes. In this talk, we will discuss how to apply the 3D tomographic techniques, together with electrochemical performance data, to obtain LIB microstructure-performance correlations. Two advanced 3D structural analysis techniques, focused ion beam-scanning electron microscopy (FIB-SEM) and transmission X-ray microscopy (TXM) nanotomography, are used to quantify different cathode materials system, including LiCoO2, LiMn2O4, and LiFePO4. The learning from LIB 3D electrode structure can be further leveraged to guide electrode structure-performance optimization for better battery.


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