Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.259
Publication date: 22nd December 2022
Characterization of multi-component slurry such as cathode and anode slurries of Li-ion battery is important, however, it is very difficult task. Thus, we investigated both the flow ability and the packing (settling) ability to discuss the particles dispersion and aggregation state for the cathode slurry of Li-ion battery. The slurries were prepared by changing the mixing condition of acetylene black particles and then the prepared slurry was casted and dried to fabricate the cathode layer. The flow curve of the slurry was measured by a rheometer and the time change of settling hydrostatic pressure was measured by a hydrostatic pressure analyzer. The density and electric resistance of the fabricated cathode layer were measured as well. It was found that a slurry in which acetylene black particles forms a network structure, with sufficient strength and the ability to rapidly recover after breaking by an external force, yields a cathode with comparatively high density and comparatively low volume resistivity [1]. It was also found that the normalized settling time of a cathode slurry determined from its change in hydrostatic pressure over time correlates well with both the density and volume resistivity of a resulting as-cast cathode [1].
This work was supported in part by a Grant-in-Aid for Scientific Research (A) [grant number 22H00575] from Japan Society for the Promotion of Science and JKA Foundation.
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