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AssigneesRain Carbon Bvba, Rain Carbon Germany GmbH
InventorsMichael Spahr, Christopher Kuhnt, Joris Claes, Bram Denoo, Jens Stiegert
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The present invention is directed to coating material for coating primary particles, said coating material comprising a petroleum-derived pitch product, characterized in that said pitch product has a melt viscosity index log10 (visc)*100/SPM between 1.2 and 3.0 at 220° C. and between 1.0 and 2.5 at 240° C., wherein visc=melt viscosity (mPa·s) and SPM=Mettler softening point ° C. The present invention is directed as well to the use of said coating material to coat the primary particles of electrode materials in the manufacturing of battery electrodes, more specifically Li-Ion batteries. Further, the present invention is directed to a battery electrode comprising a coating made of said coating material, as well as directed to a battery comprising an electrode having a coating made of said coating material. In addition, the present invention is directed to a process for obtaining a petroleum-derived pitch product as mentioned above, said process comprising a petroleum vacuum distillation process step for obtaining petroleum-derived distillation residue. Further, the invention is directed to a process for manufacturing a battery electrode comprising said process for producing a pitch product.
A coating material for coating primary particles, said coating material comprising a petroleum-derived pitch product characterized in that said pitch product has a melt viscosity index log10(visc)*100/SPM between 1.2 and 3.0 at 220° C. and between 1.0 and 2.5 at 240° C., wherein visc=melt viscosity (in mPa·s) and SPM=Mettler softening point (in ° C.).
15-18. (canceled)
Dependencies are inferred from the claim text.