IMPROVED CARBONACEOUS COATING FOR BATTERY ELECTRODE MATERIALS

IMPROVED CARBONACEOUS COATING FOR BATTERY ELECTRODE MATERIALS

The present invention is directed to use of a petroleum-derived pitch product as coating material for graphite particles for the manufacturing of battery electrodes, 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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kuhnt, Christopher, Denoo, Bram, Stiegert, Jens, Claes, Joris, Spahr, Michael
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS THEREOF
ELECTRICITY
FUELS
INORGANIC CHEMISTRY
LUBRICANTS
METALLURGY
NON-METALLIC ELEMENTS
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
PYROLIGNEOUS ACID
TECHNICAL GASES CONTAINING CARBON MONOXIDE
WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
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Beschreibung
Zusammenfassung:The present invention is directed to use of a petroleum-derived pitch product as coating material for graphite particles for the manufacturing of battery electrodes, 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= softening point °C Mettler.Further, the present invention is directed to a battery electrode comprising a coating made of said pitch product, as well as directed to a battery comprising an electrode having a coating made of said pitch product.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.