The lithium-ion battery (LIB) consists of several components, such as a positive electrode, a negative electrode, a separator and electrolyte mixture. SEMs are widely used to evaluate various materials and to analyze their structures for improvement of battery performance. This data sheet introduces the results of the positive and negative electrode observation at low accelerating voltage using a conventional SEM.
Figure 1 shows the back scattered electron image of an NCM positive electrode (Ni:Co:Mn=5:2:3) used for an automotive LIB. In figure 1 (a), particle size of the active material and distribution of the conductive additive could be confirmed. Figure 1 (b) shows magnified image of the red framed area in Figure1 (a). In this image, surface structure of the active material and surface distribution of the conductive additive could be observed.
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