Cov roj teeb lithium-ion yog ib hom roj teeb uas tuaj yeem ua tau nrov vim lawv lub zog muaj zog, tsis tshua muaj tus nqi tso tawm, thiab lub neej ntev. Lawv ua haujlwm ntawm lub hauv paus ntsiab lus ntawm cov tshuaj electrochemical ntawm cov anode thiab cathode cov ntaub ntawv thiab cov lithium ions uas shuttle rov qab thiab tawm ntawm lawv.
Hauv lithium-ion roj teeb, lub anode feem ntau yog ua los ntawm graphite, thaum lub cathode yog ua los ntawm lithium compound xws li lithium cobalt oxide, lithium manganese oxide los yogLiFePO4. Cov ntaub ntawv no tau muab tso rau hauv cov ntawv hlau thiab submerged hauv cov tshuaj electrolyte uas muaj lithium ions yaj hauv cov kuab tshuaj organic.
Thaum lub roj teeb raug them, ib qho hluav taws xob sab nraud siv qhov hluav taws xob thoob plaws hauv cov electrodes, ua rau cov lithium ions txav ntawm lub cathode mus rau anode, uas lawv tau absorbed rau hauv cov qauv graphite. Cov txheej txheem no hu ua intercalation.
Thaum lub sij hawm tso tawm, cov lithium ions khaws cia rov qab mus rau cathode, qhov chaw uas lawv hnov mob nrog cov lithium compound los tsim cov dej ntws ntawm cov hluav taws xob uas tuaj yeem siv rau cov khoom siv hluav taws xob. Qhov kev khiav ntawm cov hluav taws xob no yog ua los ntawm ib qho hluav taws xob sab nraud, xws li lub xov tooj smartphone lossis lub khoos phis tawj laptop, kom txog rau thaum cov lithium ions seem rov qab mus rau lub anode, ua tiav lub voj voog.
Kev ua tau zoo ntawm lithium-ion roj teeb nyob ntawm qhov zoo thiab muaj pes tsawg leeg ntawm cov khoom siv anode thiab cathode, nrog rau kev tsim cov tshuaj electrolyte. Kev nce qib hauv cov ntaub ntawv tshawb fawb thiab kev tsim vaj tsev tau tso cai rau kev txhim kho cov roj teeb lithium-ion tshiab thiab muaj txiaj ntsig zoo dua, nrog lub zog ntau dua thiab muaj peev xwm them sai dua.
Zuag qhia tag nrho, cov hauv paus ntsiab lus ntawm electrochemistry thiab cov khoom siv science yog qhov tseem ceeb hauv kev nkag siab txog kev ua haujlwm ntawm lithium-ion roj teeb thiab tsav tsheb tshiab hauv daim teb no. Raws li lub zog ntsuab tau dhau los ua qhov tseem ceeb, kev txhim kho cov kev daws teeb meem zoo thiab ruaj khov ntawm lub zog yuav nyob twj ywm qhov kev sib tw tseem ceeb rau cov kws tshawb fawb thiab cov kws ua haujlwm ib yam nkaus.