通过原子力显微镜测量电流-电压数据柱的主成分分析来分析LiCoO2电极

IF 1.4 4区 工程技术
Y. Maeda, N. Taguchi, H. Sakaebe
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引用次数: 3

摘要

本研究旨在揭示锂离子电池复合电极的电学特性。利用原子力显微镜对LiCoO2电极进行了分析,得到了电流-电压(I-V)曲线的三维数据集(IV-datacubes)。然后使用主成分分析法对iv -数据立方体进行分析,在统计基础上确定每个LiCoO2颗粒对应的典型I-V曲线。基于串联电阻的热离子发射模型的详细分析表明,部分粒子在电极中表现出不良的电接触。总的来说,所获得的结果表明,我们的iv - datacbe分析可以揭示电极内埋藏电接触的特征,否则使用其他方法很难完成。因此,我们相信本文提出的方法是一种很有前途的复合电极分析方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of LiCoO2 electrodes through principal component analysis of current–voltage datacubes measured using atomic force microscopy
This study aimed to reveal the electrical characteristics of the composite electrodes of Li-ion batteries. LiCoO2 electrodes were analyzed using atomic force microscopy, and three-dimensional datasets of current–voltage (I–V) curves (IV-datacubes) were obtained. The IV-datacubes were then analyzed using principal component analysis to determine the typical I–V curve corresponding to each LiCoO2 particle on a statistical basis. Detailed analysis based on the thermionic emission model with series resistance showed that some of the particles exhibited poor electrical contact in the electrode. Overall, the obtained results suggested that our IV-datacube analysis can reveal the characteristics of buried electrical contacts within electrodes, which is otherwise difficult to accomplish using alternative methods. We, therefore, believe that the method presented herein is a promising analytical method for composite electrodes.
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来源期刊
Journal of Vacuum Science & Technology B
Journal of Vacuum Science & Technology B 工程技术-工程:电子与电气
自引率
14.30%
发文量
0
审稿时长
2.5 months
期刊介绍: Journal of Vacuum Science & Technology B emphasizes processing, measurement and phenomena associated with micrometer and nanometer structures and devices. Processing may include vacuum processing, plasma processing and microlithography among others, while measurement refers to a wide range of materials and device characterization methods for understanding the physics and chemistry of submicron and nanometer structures and devices.
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