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US9,203,084B2 34 Thus,itisanobjectofthepresentinventiontoprovidea thermallyandelectricalyconductivecathodeactivematerial thatcanbeeasilyincorporatedinacathodeelectrodeofa lithiumbatery. A specificobjectofthepresentinventionistoprovidea cathodeactivematerial-coateddiscretegrapheneshets(as primaryparticles)thatreadilyaggregateintosecondarypar ticles(hereinalsoreferedtoasparticulates)thataremore amenabletomassproductionofcathodesusingcurentpro ductionequipment. A particularlydesirablespecificobjectofthepresent invention is to provide cathode active material-coated grapheneshetsthataremoreconducivetotheformationofa 3-Dnetworkofelectron-conductingpaths,impartingexcep tionalconductivitytothecathodeandenablingthecathodeto becomehigh-ratecapable. Thecathodeactivematerial-coatedgrapheneshetsdis closedherein,typicaly0.3um-10umlongorwide,havea grapheneshetthicknessintherangeof0.5nmto10nmand cathodeactivematerialcoatingthicknesintherangeof2mm to100nm (moretypicaly5-50nm).Thecathodeactive materialloading(percentage)istypicaly>80%,moretypi caly>90%,andmosttypicaly95-99%.Thisactivematerial proportionisreadilyadjustable. Anotherobjectofthepresentinventionistoprovidea processtoproducecathodeactivematerial-coatedgraphene sheets. A furtherobjectofthepresentinventionistoprovidea cathodeelectrodethathasahighcathodeactivematerial proportionandarechargeablebaterythatcontainssucha cathodeelectrode. SUMMARY OF THE INVENTION 10 15 25 30 35 a.Inparticular,thelithiumVanadium oxide may be selectedfromthegroupconsistingofVO,LiVO, V2Os, LiV2O5, VOs, LiVOs, LiVO7. VOo. LiVO, VO, LiVO, theirdopedversions, theirderivatives,andcombinationsthereof,wherein 0.1PDF Image | CATHODE ACTIVE MATERIAL-COATED DISCRETE GRAPHENE SHEETS FOR LITHIUM
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