Bafuputsi ba boletse esale pele marangrang a macha a khabone, a tšoanang le graphene, empa a nang le sebopeho se rarahaneng haholoanyane, se ka lebisang libetering tse betere tsa likoloi tsa motlakase. Graphene mohlomong ke mofuta o ikhethang o tsebahalang haholo oa khabone. E se e nkiloe e le molao o mocha oa papali bakeng sa theknoloji ea betri ea lithium-ion, empa mekhoa e mecha ea tlhahiso e ka qetella e hlahisitse libeteri tse sebelisang matla a mangata.
Graphene e ka bonoa e le marangrang a liathomo tsa khabone, moo athomo e 'ngoe le e 'ngoe ea khabone e hokahaneng le liathomo tse tharo tsa khabone tse haufi ho hlahisa liheksagone tse nyane. Leha ho le joalo, bafuputsi ba nahana hore ntle le sebopeho sena se tobileng sa mahe a linotši, meaho e meng le eona e ka hlahisoa.
Ena ke thepa e ncha e ntlafalitsoeng ke sehlopha se tsoang Univesithing ea Marburg Jeremane le Univesithi ea Aalto Finland. Ba ile ba hohela liathomo tsa khabone ka litsela tse ncha. Marang-rang a bitsoang biphenyl a entsoe ka li-hexagon, lisekoere le li-octag, e leng grid e rarahaneng ho feta graphene. Bafuputsi ba re, ka hona, e na le thepa ea elektroniki e fapaneng haholo, 'me ka litsela tse ling, e lakatsehang haholoanyane.
Mohlala, leha graphene e ananeloa ka lebaka la bokhoni ba eona ba ho ba semiconductor, marangrang a macha a khabone a itšoara joaloka tšepe. Ha e le hantle, ha a le bophara ba liathomo tse 21 feela, mela ea marangrang a biphenyl e ka sebelisoa e le likhoele tse tsamaisang motlakase bakeng sa lisebelisoa tsa elektroniki. Ba bontšitse hore ka tekanyo ena, graphene e ntse e sebetsa joaloka semiconductor.
Mongoli e moholo o itse: "Mofuta ona o mocha oa marangrang a khabone o ka boela oa sebelisoa e le thepa e ntle ea anode bakeng sa libeteri tsa lithium-ion. Ha e bapisoa le thepa ea hona joale e thehiloeng ho graphene, e na le bokhoni bo boholo ba polokelo ea lithium."
Anode ea betri ea lithium-ion hangata e entsoe ka graphite spread holim'a foil ea koporo. E na le conductivity e phahameng ea motlakase, e leng ntho ea bohlokoa eseng feela bakeng sa ho beha li-ion tsa lithium ka mokhoa o fetohang pakeng tsa mekhahlelo ea eona, empa hape hobane e ka tsoela pele ho etsa joalo ka lipotoloho tse ka bang likete. Sena se etsa hore e be betri e sebetsang hantle haholo, empa hape e be betri e ka tšoarellang nako e telele ntle le ho senyeha.
Leha ho le jwalo, mekhoa e meng e sebetsang hantle le e menyenyane e itshetlehileng hodima marangrang ana a matjha a khabone e ka etsa hore polokelo ya matla a betri e be matla haholo. Sena se ka etsa hore dikoloi tsa motlakase le disebediswa tse ding tse sebedisang dibetri tsa lithium-ion di be nyane mme di be bobebe.
Leha ho le jwalo, jwalo ka graphene, ho fumana mokhoa wa ho etsa mofuta ona o motjha ka tekanyo e kgolo ke phephetso e latelang. Mokgwa wa hajwale wa ho kopanya o itshetlehile hodima bokahodimo bo boreledi haholo ba kgauta boo dimolekhule tse nang le khabone di qalang ho bopa diketane tse hokahaneng tsa mahlakore a tsheletseng. Dikarabelo tse latelang di hokahanya diketane tsena ho etsa dibopeho tse sekwere le tse octagonal, e leng se etsang hore sephetho sa ho qetela se fapane le graphene.
Bafuputsi ba hlalositse: “Khopolo e ncha ke ho sebelisa li-precursor tsa limolek’hule tse fetotsoeng ho hlahisa biphenyl ho e-na le graphene. Sepheo joale ke ho hlahisa maqephe a maholoanyane a thepa e le hore litšobotsi tsa eona li ka utloisisoa hamolemo.”
Nako ea poso: Pherekhong-06-2022
