Feedback

Multicomponent Comminution within a Stirred Media Mill and Its Application for Processing a Lithium-Ion Battery Slurry

ORCID
0000-0001-7350-6211
Affiliation/Institute
Institut für Partikeltechnik
Nöske, Markus;
ORCID
0000-0002-7381-5070
Affiliation/Institute
Institut für Partikeltechnik
Müller, Jannes;
Affiliation/Institute
Institut für Partikeltechnik
Nowak, Christine;
Affiliation/Institute
Institut für Partikeltechnik
Li, Kangqi;
Affiliation/Institute
Institut für Partikeltechnik
Xu, Xiaolu;
GND
139607242
ORCID
0000-0002-4587-0865
Affiliation/Institute
Institut für Partikeltechnik
Breitung-Faes, Sandra;
GND
115153031X
ORCID
0000-0002-6348-7309
Affiliation/Institute
Institut für Partikeltechnik
Kwade, Arno

This study presents an approach for targeted comminution of component mixtures within a wet-operated stirred media mill. In the first step, a general understanding of the interactions between individual components on the grinding result with mixtures could be gained with basic experiments and following our former research work. In particular, a protective effect of the coarser particles on the fines could be elucidated. These findings were used to develop a process for the production of a battery slurry containing fine ground silicon particles as well as dispersed carbon black and graphite particles. By a tailored sample preparation applying a combination of particle dissolution and separation, the particle size distributions of carbon black and graphite particles were analyzed separately within the produced battery slurries. Based on the selective particle size analysis, the slurry preparation could be transferred from a complex multistage batch process using a dissolver to a stirred media mill, which was finally operated in a continuous one-passage mode. The prepared slurries were subsequently further processed to silicon-rich anodes using a pilot scale coating and drying plant. Afterward, the produced anodes were electrochemically characterized in full cells. The cell results prove a comparable electrochemical behavior of anode coatings derived from a dissolver- or mill-based slurry production process. Therefore, we could demonstrate that it is possible to integrate the mixing process for the production of multicomponent slurries into the comminution process for the preparation of individual materials upstream. Even with nearly identical starting sizes of their feed materials, the targeted particle size distributions of the single components can be reached, taking into account the different material-dependent particle strengths and sequential addition of single components to the multicomponent comminution process.

Cite

Citation style:
Could not load citation form.

Access Statistic

Total:
Downloads:
Abtractviews:
Last 12 Month:
Downloads:
Abtractviews:

Rights

Use and reproduction: