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[Analysis Case] Evaluation of Resistance Values and Li Distribution in Secondary Battery Cathodes

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[Analysis Case] Evaluation of Resistance Values and Li Distribution in Secondary Battery Cathodes

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Distribution of resistance values in the electrode cross-section, visualization of conduction paths, and comparison with ion distribution.

The charge and discharge characteristics of lithium-ion secondary batteries are influenced by electronic conductivity. I will introduce a case where the decreased conductivity of active materials, due to degradation or blockage of conduction paths, was visualized as a resistance value distribution using SSRM. By comparing the results obtained from SSRM with the elemental distribution of Li and other elements measured by TOF-SIMS, it is possible to confirm the correlation between resistance values and elemental distribution. Additionally, it is feasible to classify conductive additives and binders based on resistance values, perform statistical processing, and quantify the mixing degree for each material.

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Measurement methods: IP processing, SSRM, SEM, TOF-SIMS Product field: Secondary batteries Analysis purpose: Composition distribution evaluation, shape evaluation, product investigation

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Analysis of secondary batteries.

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[Analysis Case] Evaluation of Resistance Values and Li Distribution in Secondary Battery Cathodes_C0606

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