Sehlopha sa lipatlisiso se tsoang ho National Renewable Energy Laboratory (NREL) se hlahisitse mokhoa o mocha oa ho rarolla bothata ba mollo oa libeteri tsa lithium-ion. Senotlolo sa karabo e ka ‘na ea e-ba mokelli oa hona joale oa mocheso.

Litsebi tsa Amerika li khothalelitse hore babokelli ba hona joale ba polymer ba ka thibela mollo le ho ntlafatsa likotsi tsa mollo oa betri ea polokelo ea matla

Ho etsahala’ng ha lenala le phunya sele ea betri ea lithium-ion? Bafuputsi ba boneng ts’ebetso ena ba bolela hore ba thehile mokhoa o thehiloeng ho polymer o ka thibelang likotsi tsa mollo tse amanang le libeteri tsa lithium-ion.

Litsebi tse tsoang US National Renewable Energy Laboratory (NREL), NASA (NASA), University College London, Didcot’s Faraday Institute, London’s National Physical Laboratory, le France’s European Synchrotron, ba tla The Nail e khokhotheloa ka har’a cylindrical “18650 battery” (18x65mm in size) e sebelisoang hangata lits’ebetsong tsa likoloi. Bafuputsi ba leka ho hlahisa khatello ea kelello eo libeteri tsa koloi ea motlakase (EV) li tlamehang ho mamella ha li soahlamana.

Lenala le tla etsa hore ho be le potoloho e khutšoanyane ka hare ho betri, ho etsa hore mocheso oa eona o phahame. E le ho ithuta ka ho qaqileng se ileng sa etsahala ka har’a betri ha sepekere se kena ka har’a betri, bafuputsi ba ile ba sebelisa k’hamera ea X-ray e potlakileng ho tšoara ketsahalo ka liforeimi tse 2000 motsotsoana.

Donal Finegan, rasaense oa basebetsi ba NREL, o itse: “Ha betri e hlōleha, e hlōleha ka potlako haholo, kahoo e ka tloha e tiile ka ho feletseng ho ea ho metsoa ke malakabe le ho timetsoa ka ho feletseng ka metsotsoana e seng mekae. Lebelo le lebelo haholo, le lebelo haholo. Ho thata ho utloisisa se etsahetseng metsotsong ena e ’meli. Empa hape ho bohlokoa haholo ho utloisisa se etsahetseng, hobane taolo ea metsotsoana ena e ‘meli ke ntlha ea bohlokoa ho ntlafatsa polokeho ea betri. ”

Haeba e sa hlokomeloe, ho phahama ha mocheso oa betri ho bakoang ke ho baleha ha mocheso ho netefalitsoe ho feta likhato tse 800 tsa Celsius.

Lisele tsa betri li na le likoleke tsa hona joale tsa aluminium le koporo. Sehlopha sa lipatlisiso se sebelisitse li-polymers tse koahetsoeng ka aluminium ho bapala karolo e tšoanang ‘me li hlokometse hore babokelli ba bona ba hona joale ba fokotseha ka mocheso o phahameng, hang-hang ba tšoara ho phalla ha hona joale. Mocheso oa nako e khutšoanyane o etsa hore polymer e fokotsehe, ‘me karabelo e etsa mokoallo oa’ mele pakeng tsa sepekere le electrode e mpe, ho emisa potoloho e khutšoanyane.

Nakong ea teko, libeteri tsohle tse se nang mochine oa hona joale oa polima li tla senyeha haeba sepekere se hlajoa. Ka lehlakoreng le leng, ha ho le e ‘ngoe ea libeteri tse kentsoeng polymer e bonts’itseng boits’oaro bona.

Finegan o itse: “Ho hlōleha ho tšosang ha betri ke seoelo, empa ha sena se etsahala, se ka baka tšenyo e khōlō. Ha se feela bakeng sa polokeho le bophelo bo botle ba basebetsi ba amehang, empa le bakeng sa k’hamphani. ”

Litsebi tsa Amerika li khothalelitse hore babokelli ba hona joale ba polymer ba ka thibela mollo le ho ntlafatsa likotsi tsa mollo oa betri ea polokelo ea matla

Ha ho nahanoa ka k’hamphani e kopanyang lisele tsa betri, NREL e ile ea supa polokelong ea eona ea ho hloleha ha betri, e nang le lintlha tse makholo tsa livideo tsa radiological le lintlha tsa mocheso ho tsoa ho makholo a liteko tsa tšebeliso e mpe ea betri ea lithium-ion.

Finegan o itse: “Hase kamehla bahlahisi ba banyenyane ba nang le nako le lisebelisoa tsa ho hlahloba libeteri ka tsela e matla hakana eo re bileng le eona lilemong tse hlano ho isa ho tse tšeletseng tse fetileng.”

Bafuputsi ba Russia le bona ba sa tsoa hlahisa mohopolo oa ho sebelisa li-polymers ho thibela mollo oa betri. Moprofesa Oleg Levin oa Lefapha la Electrochemistry Univesithing ea St. Petersburg le basebetsi-‘moho le eena ba ile ba qapa mokhoa oa ho sebelisa li-polymers ‘me ba etsa kopo ea patent. The conductivity ea polymer ena e fetoha le liphetoho mocheso kapa voltage. Sehlopha se bitsitse mokhoa ona “chemical fuze”.

Ho ea ka sehlopha sa betri ea micro-lithium, hajoale, polima ena ea bo-rasaense ba Russia e loketse feela libeteri tsa lithium iron phosphate (LFP), hobane likarolo tse fapaneng tsa cathode li sebetsa maemong a fapaneng a voltage. Bakeng sa libeteri tsa LFP, ke 3.2V. Li-cathode tsa Competitor nickel-manganese-cobalt (NMC) li na le matla a ho sebetsa pakeng tsa 3.7V le 4.2V, ho itšetlehile ka mofuta oa betri ea NMC.