Li-ion yog lub roj teeb uas tsis muaj kev tu ncua, qhov zoo dua uas feem ntau lwm cov chemistry tsis tuaj yeem thov.Lub roj teeb tsis muaj lub cim xeeb thiab tsis xav tau kev tawm dag zog (kom txhob txwm tso tawm) kom nws zoo.Kev tso tawm tus kheej yog tsawg dua li ib nrab ntawm cov nickel-based systems thiab qhov no pab cov kev siv roj ntsuas.Lub nominal cell voltage ntawm 3.60V tuaj yeem ncaj qha rau lub xov tooj ntawm tes, ntsiav tshuaj thiab cov koob yees duab digital, muab kev yooj yim thiab txo nqi ntawm ntau lub xov tooj tsim.Qhov tsis zoo yog qhov xav tau rau kev tiv thaiv circuits los tiv thaiv kev tsim txom, nrog rau cov nqi siab.
Hom ntawm Lithium-ion roj teeb
Daim duab 1 qhia txog cov txheej txheem.
Li-ion yog lub roj teeb uas tsis muaj kev tu ncua, qhov zoo dua uas feem ntau lwm cov chemistry tsis tuaj yeem thov.Lub roj teeb tsis muaj lub cim xeeb thiab tsis xav tau kev tawm dag zog (kom txhob txwm tso tawm) kom nws zoo.Kev tso tawm tus kheej yog tsawg dua li ib nrab ntawm cov nickel-based systems thiab qhov no pab cov kev siv roj ntsuas.Lub nominal cell voltage ntawm 3.60V tuaj yeem ncaj qha rau lub xov tooj ntawm tes, ntsiav tshuaj thiab cov koob yees duab digital, muab kev yooj yim thiab txo nqi ntawm ntau lub xov tooj tsim.Qhov tsis zoo yog qhov xav tau rau kev tiv thaiv circuits los tiv thaiv kev tsim txom, nrog rau cov nqi siab.
Sony tus thawj lithium-ion roj teeb siv coke ua anode (cov khoom siv thee).Txij li thaum xyoo 1997, feem ntau Li ion tuam txhab lag luam, suav nrog Sony, hloov mus rau graphite kom ncav cuag qhov kev nthuav tawm zoo nkauj.Graphite yog ib daim ntawv ntawm cov pa roj carbon uas muaj lub voj voog ntev ntev thiab siv rau hauv cov xaum txhuas.Nws yog cov khoom siv carbon ntau tshaj plaws, ua raws li cov khoom siv tawv thiab mos.Nanotube carbons tseem tsis tau pom kev lag luam siv hauv Li-ion vim tias lawv nyiam ua rau muaj kev cuam tshuam thiab cuam tshuam rau kev ua haujlwm.Cov khoom siv yav tom ntej uas cog lus los txhim kho kev ua haujlwm ntawm Li-ion yog graphene.
Daim duab 2 qhia txog qhov hluav taws xob tawm hluav taws xob ntawm Li-ion niaj hnub nrog graphite anode thiab cov coke thaum ntxov.
Ob peb additives tau sim, nrog rau silicon-raws li alloys, txhim khu kev ua tau zoo ntawm graphite anode.Nws siv rau carbon (graphite) atoms los khi rau ib leeg lithium ion;ib qho atom silicon tuaj yeem khi rau plaub lithium ions.Qhov no txhais tau hais tias silicon anode tuaj yeem theoretically khaws ntau dua 10 npaug ntawm lub zog ntawm graphite, tab sis kev nthuav dav ntawm cov anode thaum them nqi yog ib qho teeb meem.Ntshiab silicone anodes yog li ntawd tsis siv tau thiab tsuas yog 3-5 feem pua ntawm silicon feem ntau yog ntxiv rau cov anode ntawm silicon-raws li kom ua tiav lub neej voj voog zoo.
Siv nano-structured lithium-titanate raws li anode additive qhia tau hais tias lub neej voj voog zoo, muaj peev xwm thauj khoom zoo, kev ua haujlwm kub qis thiab kev nyab xeeb zoo dua, tab sis lub zog tshwj xeeb yog qis thiab tus nqi siab.
Kev sim nrog cov khoom siv cathode thiab anode tso cai rau cov tuam txhab tsim kom muaj kev ua tau zoo, tab sis ib qho kev txhim kho tuaj yeem cuam tshuam lwm tus.Lub npe hu ua "Energy Cell" optimizes lub zog tshwj xeeb (muaj peev xwm) kom ua tiav lub sijhawm ua haujlwm ntev tab sis ntawm qis zog tshwj xeeb;"Power Cell" muaj lub zog tshwj xeeb tab sis muaj peev xwm qis dua.Lub "Hybrid Cell" yog kev sib haum xeeb thiab muab me ntsis ntawm ob qho tib si.
Cov neeg tsim khoom muaj peev xwm ua tau lub zog tshwj xeeb thiab tus nqi qis kuj yooj yim los ntawm kev ntxiv npib tsib xee los ntawm cov cobalt kim dua, tab sis qhov no ua rau lub xov tooj tsis ruaj khov.Thaum lub tuam txhab pib ua lag luam yuav tsom rau lub zog tshwj xeeb thiab tus nqi qis kom tau txais kev lag luam sai, kev nyab xeeb thiab kav ntev tsis tuaj yeem cuam tshuam.Reputable manufacturers tso siab ncaj ncees rau kev nyab xeeb thiab ntev.
Cov roj teeb Li-ion feem ntau muaj cov qauv zoo sib xws uas muaj cov hlau oxide zoo electrode (cathode) uas yog coated mus rau ib qho txhuas tam sim no, cov electrode tsis zoo (anode) ua los ntawm carbon / graphite coated ntawm tooj liab tam sim no collector, ib tug separator thiab electrolyte. ua los ntawm lithium ntsev hauv cov kuab tshuaj organic.Xav paub ntau ntxiv, pls mus nrog teda battery.com.
Table 3 qhia txog qhov zoo thiab kev txwv ntawm Li-ion.
Post lub sij hawm: Jun-26-2022