Kev txheeb xyuas cov khoom siv cathode

Hauv 2012, lithium roj teeb suav txog 41% ntawm lub ntiaj teb lithium davhlau ya nyob twg xav tau. Lub tswv yim thiab kev ua haujlwm ntawm lub roj teeb lithium nyob ntawm tus qauv thiab kev ua haujlwm ntawm cov ntaub ntawv sab hauv ntawm lub roj teeb. Cov ntaub ntawv hauv lub roj teeb suav nrog cov ntaub ntawv tsis zoo, electrolyte, membrane thiab cov ntaub ntawv zoo. Cov ntaub ntawv zoo yog cov ntaub ntawv tseem ceeb, suav txog 30-40% ntawm tus nqi ntawm cov roj teeb lithium. Kev nthuav dav sai ntawm cov khw muag khoom siv hluav taws xob (laptops, ntsiav tshuaj, xov tooj ntse, thiab lwm yam) tau ua rau muaj kev xav tau ntawm cov roj teeb lithium. Nyob rau hauv lub neej yav tom ntej, hluav taws xob tsheb thiab lub zog cia cov nroj tsuag nyob rau hauv lub tshiab lub zog sector yuav cia siab rau lithium roj teeb. Los ntawm 2013, lub ntiaj teb no lithium roj teeb kev lag luam yuav tsum mus txog 27.81 billion US dollars. Nyob rau hauv 2015, kev lag luam daim ntawv thov ntawm lub zog tshiab tsheb yuav tsav lub ntiaj teb no lithium roj teeb kev lag luam mus txog US $ 52.22 billion. Nrog rau kev nthuav dav ntawm lithium roj teeb kev lag luam txoj kev npaj, Cov ntaub ntawv zoo lithium roj teeb kev lag luam txoj kev npaj tseem nyob rau hauv lub sijhawm nthuav dav, thiab daim ntawv thov ntawm lithium cobalt oxide yog qhov paub tab tshaj plaws.

Siv qeb decomposition nrog cov ntaub ntawv zoo

Cov ntaub ntawv zoo ntawm lithium roj teeb tam sim no tau siv thiab tsim yog tsim los ntawm cov ntaub ntawv ternary ntawm lithium cobalt acid, lithium nickel cobalt acid, nickel manganese cobalt, spinel lithium manganese acid thiab olivine lithium hlau phosphate. Hauv kuv lub tebchaws, cov ntaub ntawv cathode feem ntau suav nrog lithium cobalt oxide, cov ntaub ntawv ternary, lithium manganate thiab lithium hlau phosphate. Daim ntawv thov qeb decomposition ntawm cov ntaub ntawv zoo yog qhov tseem ceeb heev. Lithium cobalt oxide tseem yog qhov tseem ceeb ntawm cov ntaub ntawv zoo rau cov roj teeb lithium me me, thiab nws tseem yog qhov tseem ceeb rau cov roj teeb lithium 3C. Ternary cov ntaub ntawv thiab lithium manganese oxide yog cov khoom tseem ceeb ntawm cov roj teeb lithium me me. Hauv Nyij Pooj thiab Kaus Lim Qab Teb, roj teeb thev naus laus zis yog qhov paub tab thiab tseem ceeb rau cov cuab yeej hluav taws xob, tsheb kauj vab hluav taws xob thiab tsheb hluav taws xob. Lithium hlau phosphate yog dav siv nyob rau hauv kuv lub teb chaws thiab yog txoj kev loj hlob yav tom ntej. Nws muaj ib qho tseem ceeb daim ntawv thov nqi nyob rau hauv lub hauv paus chaw nres tsheb thiab cov ntaub ntawv chaw zog cia, lub tsev zog cia, thiab hnub ci zog cia.

Lithium cobalt oxide yuav maj mam hloov

Kev tsim cov txheej txheem ntawm lithium cobalt oxide yog qhov yooj yim, kev ua haujlwm ntawm electrochemical ruaj khov, thiab nws yog ib qho ntawm thawj qhov zoo ntawm kev lag luam tag nrho. Nws muaj qhov zoo ntawm cov hluav taws xob tawm hluav taws xob, ruaj khov thiab tawm hluav taws xob, thiab lub zog sib piv siab. Nws muaj cov ntawv thov tseem ceeb hauv cov khoom siv roj teeb me me. Cov neeg siv khoom siv hluav taws xob ua lag luam tab tom txhim kho sai, thiab kev muag khoom ntawm lithium cobalt oxide roj teeb cathode cov ntaub ntawv suav nrog ntau tshaj plaws, tab sis cov peev txheej siab tsis zoo rau kev tiv thaiv ib puag ncig, qhov tshwj xeeb muaj peev xwm siv tau tsawg, lub roj teeb lub neej luv, thiab kev nyab xeeb yog pluag. Ternary cov ntaub ntawv integrates qhov zoo ntawm lithium cobalt, lithium nickel thiab lithium manganese thiab muaj ib tug nqi kom zoo dua, tab sis nws siv yog cuam tshuam los ntawm tus nqi ntawm cobalt. Thaum tus nqi ntawm cobalt yog siab, tus nqi ntawm cov ntaub ntawv ternary yog qis dua li ntawm cobalt lithium, uas muaj kev sib tw ua lag luam muaj zog. Tab sis thaum tus nqi ntawm cobalt qis dua, qhov zoo ntawm cov ntaub ntawv triad muaj feem xyuam nrog cobalt thiab lithium tsawg dua. Tam sim no, kev hloov cov ntaub ntawv lithium oxide los ntawm cov ntaub ntawv ternary yog ib qho kev sib txawv.

Ternary cov ntaub ntawv muaj qhov zoo ntawm tus nqi qis

Cov ntaub ntawv ternary yog npaj los ntawm kev qhia nickel, cobalt, thiab manganese hauv ib qho kev faib ua feem, thiab tom qab ntawd qhia txog lithium qhov chaw. Tesla thawj lub tsheb kis las siv 18650 lithium cobalt oxide roj teeb, thaum nws cov qauv tsim thib ob Model-s siv Panasonic’s customized Ternary-Data roj teeb, uas yog nickel-cobalt-aluminium roj teeb. Ternary-PositiveData roj teeb. Lithium cobalt oxide roj teeb yog kim, yog li nws ua rau kev txiav txim siab los sib piv qhov kev ua tau zoo ntawm ob lub qauv ua ntej thiab tom qab Tesla. Qauv s siv ntau tshaj 8,000 roj teeb, uas yog ntau tshaj 1,000 ntau tshaj Roadster. Txawm li cas los xij, vim tias cov nqi tswj tau zoo dua ntawm 3-txoj kev roj teeb, tus nqi tau raug txo los ntawm 30%. Tam sim no, tseem muaj qhov sib txawv loj ntawm kuv lub teb chaws txoj kev ua haujlwm siab ntawm lithium roj teeb NCM ternary cov ntaub ntawv thiab cov lag luam thoob ntiaj teb, thiab muaj ob qho kev cuam tshuam loj hauv cov cuab yeej siv thiab kev tswj xyuas kev ruaj ntseg, thiab kev txhim kho yog pom tseeb lagging qab. Nws tau siv dav hauv txawv teb chaws, tab sis peb lub tuam txhab tseem tsis tau muaj cov khoom lag luam.