Bafuputsi ba tsoang Univesithing ea Theknoloji ea Chalmers ba hlahisitse mokhoa o mocha le o sebetsang oa ho sebelisa hape litšepe tse tsoang libetering tsa likoloi tsa motlakase. Mokhoa ona o fumana aluminium ea 100% le lithium ea 98% ho tsoa libetering tsa EV tse sebelisitsoeng. Sena se fokotsa tahlehelo ea thepa ea bohlokoa e tala e kang nickel, cobalt le manganese. Ts'ebetso ena ha e hloke lik'hemik'hale tse turang kapa tse kotsi hobane bafuputsi ba sebelisitse oxalic acid, e leng acid e fumanehang hape 'musong oa limela.
Ho fihlela joale, ha ho motho ea khonneng ho fumana maemo a loketseng a ho arola bongata bona ba lithium ka ho sebelisa oxalic acid le ho tlosa aluminium eohle. Leah Rouquette, seithuti sa PhD Lefapheng la Khemistri le Boenjiniere ba Lik'hemik'hale Univesithing ea Theknoloji ea Chalmers, o itse kaha libeteri tsohle li na le aluminium, re lokela ho khona ho e tlosa ntle le ho lahleheloa ke litšepe tse ling.
Laboratoring ea ho Sebelisa Libetri Hape Univesithing ea Theknoloji ea Chalmers, Leah Rouquette le moetapele oa lipatlisiso Martina Petranikova ba bontšitse kamoo mokhoa ona o mocha o sebetsang kateng. Laboratori e ne e e-na le libeteri tsa likoloi tse sebelisitsoeng, 'me ka har'a sekwahelo sa mosi ho ne ho e-na le thepa e sithabetseng ka mokhoa oa phofo e ntšo e sitsitsoeng hantle e qhibilihisitsoeng ka har'a mokelikeli o hlakileng - oxalic acid. Leah Rouquette o sebelisa se shebahalang joaloka blender ea kichine ho kopanya metsi le phofo. Le hoja ho bonahala ho le bonolo joalokaha eka o etsa kofi, mokhoa ona o ikhethang ke o ikhethang 'me ke tsoelo-pele ea saense e sa tsoa hatisoa. Ka ho lokisa mocheso, mahloriso le nako, bafuputsi ba hlahisitse risepe e ncha e sebelisang oxalic acid, motsoako o mosa tikolohong o fumanoang hape limela tse kang rhubarb le spinach.
Ho hlokahala mekhoa e meng ho feta lik'hemik'hale tse sa pheleng tsa kajeno. Ho feta moo, e 'ngoe ea litšitiso tse kholo lits'ebetsong tsa sejoale-joale ke ho tlosoa ha lintho tse setseng tse kang aluminium. Martina Petranikova, Moprofesa ea Kopaneng Lefapheng la Khemistri le Boenjiniere ba Lik'hemik'hale Univesithing ea Theknoloji ea Chalmers, o itse ke mokhoa o mocha o ka fanang ka mekhoa e meng e mecha indastering ea ho sebelisa lintho hape le ho thusa ho rarolla mathata a sitisang nts'etsopele.
Mekhoa ea ts'ebetso e thehiloeng holim'a metsi e bitsoa hydrometallurgy. Ho hydrometallurgy ea setso, "litšila" tse tsoang linthong tse kang aluminium le koporo lia tlosoa pele, ebe litšepe tsa bohlokoa tse kang lithium, cobalt, nickel le manganese li ka sebelisoa. Le hoja ho setse aluminium le koporo e nyane feela, ho hlokahala mekhahlelo e 'maloa ea tlhoekiso,' me mohato ka mong oa ts'ebetso o fella ka ho lutla. Mokhoeng o mocha, bafuputsi ba fetotse sehiloeng 'me ba qala ka ho arola lithium ho aluminium. Ka tsela ena, ba ka fokotsa tšenyo ea litšepe tsa bohlokoa tse hlokahalang ho etsa libeteri tse ncha.
Esita le halofo ea bobeli ea ts'ebetso—ho sefa motsoako o lefifi—ho hopotsa ho etsa kofi. Leha aluminium le lithium li kena mokelikeling, litšepe tse ling li sala "sump." Mohato o latelang ts'ebetsong ena ke ho arola aluminium le lithium.
“Kaha litšepe tsena li na le thepa e fapaneng haholo, re lumela hore ho li arola ho ke ke ha e-ba thata. Mokhoa oa rona o mocha o bula tsela e ncha e tšepisang ea ho sebelisa libeteri hape eo re nang le khothatso e feletseng ea ho e hlahloba haholoanyane,” ho bolela Leah Rouquette. “Kaha mokhoa ona o ka boela oa sebelisoa ka tekanyo e kholo, re tšepa hore o tla ba molemo indastering lilemong tse tlang,” ho bolela Martina Petranikova.
Sehlopha sa lipatlisiso sa Martina Petranikova se 'nile sa etsa lipatlisiso tse etellang pele mabapi le ho sebelisoa hape ha tšepe libetering tsa lithium-ion ka lilemo tse ngata. Sehlopha sena se sebelisana 'moho le lik'hamphani tse amehang ho sebelisoeng hape ha libeteri tsa likoloi tsa motlakase 'me ke molekane mererong e meholo ea R&D joalo ka Volvo Cars le projeke ea Northvolt ea Nybat.
Tlhahisoleseding e eketsehileng mabapi le patlisiso: Sengoloa sa mahlale se reng “Ho hlaphoheloa ha lithium ka botlalo ho tsoa libetering tsa motlakase tsa lithium-ion: ho etsa mohlala le ho ntlafatsa ho sebelisoa oxalic acid e le lixiviant” se phatlalalitsoe koranteng ea Separation and Purification Technology. Phuputso e entsoe ke Leah Rouquette, Martina Petranikova le Natalia Vieceli ba tsoang Lefapheng la Khemistri le Boenjiniere ba Lik'hemik'hale Univesithing ea Theknoloji ea Chalmers. Phuputso e tšehelitsoe ke Swedish Energy Agency, Swedish Battery Base le Vinnova, 'me liteko li entsoe ka ho sebelisa libeteri tsa motlakase tsa Volvo Cars tse sebelisitsoeng tse sebetsitsoeng ke Stena Recycling le Akkuser Oy.
Re phatlalatsa lingoloa tse ngata tsa baeti tse tsoang ho litsebi mafapheng a fapaneng. Ena ke tlaleho ea rona ea batho bana ba khethehileng, mekhatlo, litsi le lik'hamphani.
Mabopo a tla ba le khutso, a se ke a silafatsa haholo, a ntše likhase tse fokolang tsa mocheso 'me a sebetse hantle haholoanyane. Bohle ba tla ntlafala…
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