IMPROVED CARBONACEOUS COATING MATERIAL FOR BATTERY ELECTRODE MATERIALS
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United States of America
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Feb 13, 2025
app pub date -
Dec 13, 2022
filing date -
Dec 13, 2022
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Abstract
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.
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