Univesithi ea California e etsa diaphragm e ncha ea betri ho qoba ho phatloha ho feteletseng ha betri ka ho sebelisa marang-rang a carbon nanotube

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Nano-engineer ea Univesithi ea California San Diego e hlahisitse tšobotsi e sireletsehileng e thibelang libeteri tsa tšepe tsa lithium ho futhumala ka potlako le ho lelekoa ha li le khutšoanyane. Liu Ping, moprofesa oa nano-engineering ho tloha California, San Diego, o ile a hatisa pampiri makasineng ea "Advanced Materials", e hatisitsoeng makasineng ea "Advanced Materials", e hlahisitse mosebetsi oa bona ka ho qaqileng. Libetri tsa tšepe tsa lithium li na le bokhoni bo boholo ts&39;ebetsong, empa ho bonolo ho hloleha ka mokhoa oa hona joale.

Sena se bakoa ke ho hōla ha sebopeho sa nale se bitsoang kristale ea dendritic, dendrimature e thehoa ho anode ka mor&39;a hore betri e qosoe, &39;me karohano e ka phunyeletsoa, ​​​​&39;me karohano e thehoa pakeng tsa anode le cathode. Thibelo, ho fokotsa matla le ho phalla ha mocheso. Ha tšitiso ena e senngoa ’me lielektrone li khona ho phalla ka bolokolohi haholoanyane, li hlahisa lik’hilojule tse eketsehileng, ’me lintho li tla tsoa taolong, li baka ho futhumala ho feteletseng, ho hlōleha, mollo, esita le ho phatloha.

Bo-rasaense ba batla ho rarolla mathata ana ka libeteri tsa tšepe tsa lithium ka litsela tse sa tšoaneng, moo mahlaseli a ultrasonic kapa a khethehileng a sireletsang a sebelisang ultrasound kapa lihlopha tse khethehileng tse sireletsang ho tloha e le menyetla e fokolang feela. Sehlopha se tlositse karolo ea betri e bitsoang diaphragm. Diaphragm ke mokoallo pakeng tsa electrode e ntle le electrode e fosahetseng, e le hore ha betri e le khutšoanyane, matla a bokelletsoeng ka har&39;a betri (ke hore, mocheso) a phalla Butle butle.

Mongoli oa pele oa thesis o ile a makala: "Ha re leke ho thibela ho hloleha ha betri. Re mpa re etsa hore betri e sireletsehe haholoanyane, kahoo ha e hlōleha, betri e ke ke ea tšoara mollo kapa ho phatloha. Libetri tsa tšepe tsa lithium Kamora ho tjhaja khafetsa, anode e tla hlaha ho anode.

Ha nako e ntse e ea, kholo ea dendritic e telele ka ho lekaneng, e kenella ka har&39;a diaphragm, e phahamisa borokho pakeng tsa anode le cathode, e bakang lipotoloho tse khutšoanyane tsa ka hare. Ha sena se etsahala, phallo ea elektrone lipakeng tsa li-electrode tse peli e lahleheloa ke taolo, e etsa hore betri e fetohe ho feta tekano ebe e emisa ho sebetsa. Sehlopha sa lipatlisiso Univesithing ea California San Diego se fokotsehile.

Lehlakore le leng le na le lera le tšesaane, le nang le motlakase o fokolang oa carbon nanotube network, e ka thibelang sebopeho leha e le sefe sa li-dendrite. Ha dendritic peista diaphragm &39;me e otla letlooa la carbon nanotube, elektronike e na le mocha, o ka ntšang butle-butle, eseng ka ho toba ho cathode. Gonzalez o tla bapisa karohano e ncha ea betri le tsela ea drainage letamong.

O itse: “Ha letamo le qala ho thijoa, le tla bula le qhalaneng, le tlohele metsi a mang hore a tsoe ka mokhoa o laolehang. Ka tsela ena, ha letamo e hlile e le seretse, ha ho na metsi a mangata a ka bakang likhohola. Ena ke mohopolo oa karohano ea rona, e fokotsang haholo lebelo la tefiso, ho thibela "khohola" ea elektroniki ho cathode.

Ha dendritic e kenngoa ke lesela la conductive la karohano, betri e tla qala ho tsoa, ​​kahoo ha betri e le khutšoanyane, ha ho na matla a lekaneng a ho ba kotsi. "Mosebetsi o mong oa lipatlisiso tsa betri o tsepamisitsoe ho thibela ho kenella ha li-dendrites ka thepa e matla e lekaneng. Empa Gonzalez o boletse hore bothata ka mokhoa ona ke hore e atolosoa feela liphetho tse ke keng tsa qojoa.

Likarohano tsena li ntse li hloka hantle, li lumella li-ion hore li fete e le hore betri e sebetse. Ka hona, ha sefate se qetella se fetisitsoe, potoloho e khutšoanyane e tla mpefala. Tekong, betri ea tšepe ea lithium e kentsoeng ka har&39;a karohano e ncha e bonts&39;a matšoao a ho hloleha butle-butle ho 20 ho ea ho 30 cycles.

Ka nako e ts&39;oanang, phihlelo ea karohano ea betri le e tloaelehileng (le e teteaneng hanyenyane) ka tšohanyetso e na le liphoso ka potoloho e le &39;ngoe. "Nthong ea &39;nete, u ke ke ua ba le tlhokomeliso ea hore betri e haufi le ho hloleha. Motsotsoana o fetileng o kanna oa loka, o tla ts&39;oara mollo kapa potoloho e khuts&39;oane ka ho felletseng motsotsoana o latelang.

Sena ha se tsejoe hantle, "ho boletse Gonzalez. "Empa le karohano ea rona, u tla lemosoa esale pele, ho mpefala, ho mpefala, ho mpefala, ho mpefala le ho feta. "Le hoja sepheo sa thuto ena e le libeteri tsa tšepe tsa lithium, bafuputsi ba re karohano ena e ka boela ea sebelisoa ho li-ion tsa lithium le liphetoho tse ling tsa lik&39;hemik&39;hale tsa betri.

Sehlopha sa lipatlisiso se tla ikemisetsa ho ntlafatsa ts&39;ebeliso ea khoebo ea karohano. California University San Diego e entse kopo ea patent ea nakoana bakeng sa thuto.