It is possible to evaluate the state of the electrodes before and after charging, as well as the presence and distribution of Li.
Silicon (Si) is one of the candidates for high-capacity anode active materials, but it is said to suffer from severe cycle degradation due to the very large volume changes during charge and discharge. We dismantled and observed the Si anode before and after charging under controlled atmospheric conditions. Furthermore, we created cross-sectional observation samples using the FIB micro-sampling method and conducted shape observation and EELS measurements with a Cs-corrected STEM device to evaluate the condition of the Si electrode and the distribution of Li within the electrode.
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Applications/Examples of results
Measurement methods: TEM, STEM-HAADF, EELS, EDX Product field: Secondary batteries Analysis purposes: Composition evaluation, identification, shape evaluation, degradation investigation, reliability assessment
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Company information
MST is a foundation that provides contract analysis services. We possess various analytical instruments such as TEM, SIMS, and XRD to meet your analysis needs. Our knowledgeable sales representatives will propose appropriate analysis plans. We are also available for consultations at your company, of course. We have obtained ISO 9001 and ISO 27001 certifications. Please feel free to consult us for product development, identifying causes of defects, and patent investigations! MST will guide you to solutions for your "troubles"!