[Analysis Case] Degradation Assessment of Cathode Active Material in Secondary Batteries

Evaluate the degradation state of active materials from the crystal structure.

The positive electrode active material of lithium-ion secondary batteries, LiCoO2, undergoes changes in crystal interlayer spacing and other characteristics due to lithium intercalation during charge and discharge. It is also known that overcharging and long-term cycling tests can significantly alter the composition and crystal structure, leading to a decline in charge and discharge characteristics. In this presentation, we will introduce cases where these changes were evaluated using XRD and Raman spectroscopy. Furthermore, by conducting in situ (operando) XRD measurements, it is also possible to evaluate the crystal structure at various states of charge (SOC). Measurement methods: XRD, Raman, SEM Product field: Secondary batteries Analysis purposes: Composition evaluation and identification, composition distribution evaluation, shape evaluation, structural evaluation, product investigation For more details, please download the materials or contact us.

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