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Analysis of the Mixed State of Slurry Battery Materials

Particle Characterization

Lithium ion battery (LiB) electrodes are fabricated by mixing active material particles and conductive agents in a dispersing solution, then coating the uniformly mixed slurry on a metal current collector and drying it.

Since the dispersion of the active material and the conductive agent contributes to the performance of the battery, it is important to understand and control the mixing and kneading conditions, but until now the actual dispersion conditions have not been known because they have been controlled by the viscosity of the slurry.

We analyzed two slurry battery materials containing active material (NCM) and conductive agent (carbon) before and after kneading using Partica CENTRIFUGE, a nanoparticle analyzer.

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Analysis of the Mixed State of Slurry Battery Materials
We analyzed two slurry battery materials containing active material (NCM) and conductive agent (carbon). By using Partica CENTRIFUGE to analyze battery materials before and after kneading, results with distinctly different distributions were obtained, which enable us to infer the dispersion state of the battery materials.
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