Li-ion roj teeb yuav luag txhua qhov chaw.Lawv siv nyob rau hauv daim ntawv thov ntawm cov xov tooj ntawm tes thiab laptops rau hybrid thiab hluav taws xob tsheb.Cov roj teeb lithium-ion kuj tseem nrov hauv cov ntawv thov loj xws li Uninterruptible Power Supplies (UPSs) thiab cov roj teeb hluav taws xob ruaj khov (BESSs).
Lub roj teeb yog ib lub cuab yeej uas muaj ib lossis ntau lub hlwb electrochemical nrog cov kev sib txuas sab nraud rau cov khoom siv hluav taws xob.Thaum lub roj teeb muab hluav taws xob, nws qhov zoo tshaj plaws yog lub cathode, thiab nws lub davhlau ya nyob twg tsis zoo yog lub anode.Lub davhlau ya nyob twg cim tsis zoo yog lub hauv paus ntawm electrons uas yuav ntws los ntawm ib qho hluav taws xob sab nraud mus rau lub davhlau ya nyob twg zoo.
Thaum lub roj teeb txuas nrog lub zog hluav taws xob sab nraud, cov tshuaj tiv thaiv redox (txo-oxidation) hloov pauv cov hluav taws xob siab rau cov khoom siv hluav taws xob qis, thiab qhov sib txawv dawb-zog yog xa mus rau sab nraud raws li hluav taws xob hluav taws xob.Keeb kwm lo lus "roj teeb" tshwj xeeb yog xa mus rau ib lub cuab yeej uas muaj ntau lub hlwb;Txawm li cas los xij, kev siv tau hloov kho kom suav nrog cov khoom siv los ntawm ib lub xov tooj ntawm tes.
Lub roj teeb lithium-ion ua haujlwm li cas?
Cov roj teeb Li-ion feem ntau muaj cov qauv tsim zoo sib xws uas muaj cov hlau oxide zoo electrode (cathode) coated rau hauv cov khoom siv hluav taws xob tam sim no, ib qho tsis zoo electrode (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.
Thaum lub roj teeb tawm thiab muab cov hluav taws xob tam sim no, cov electrolyte nqa tau zoo lithium ions los ntawm anode mus rau cathode thiab rov ua dua los ntawm kev sib cais.Lub zog ntawm lithium ions tsim cov hluav taws xob dawb hauv lub anode uas tsim cov nqi ntawm cov khoom tam sim no zoo.Cov hluav taws xob tam sim no ntws los ntawm cov khoom siv tam sim no los ntawm cov cuab yeej siv hluav taws xob (xov tooj ntawm tes, khoos phis tawj, thiab lwm yam) mus rau qhov tsis zoo tam sim no.Lub separator thaiv qhov ntws ntawm electrons hauv lub roj teeb.
Thaum lub sij hawm them nyiaj, ib qho hluav taws xob hluav taws xob sab nraud (qhov hluav taws xob them hluav taws xob) siv qhov hluav taws xob tshaj (qhov hluav taws xob siab dua li lub roj teeb tsim, ntawm tib lub polarity), yuam kom them tam sim no ntws hauv lub roj teeb los ntawm qhov zoo mus rau qhov tsis zoo electrode, piv txwv li nyob rau hauv lub rov qab kev taw qhia ntawm ib tug tawm tam sim no nyob rau hauv ib txwm tej yam kev mob.Cov lithium ions tom qab ntawd tsiv los ntawm qhov zoo mus rau qhov tsis zoo electrode, qhov chaw uas lawv nkag mus rau hauv cov khoom siv hluav taws xob ntxeem tau hauv cov txheej txheem hu ua inter-calation.
Post lub sij hawm: Jun-26-2022