Cov khoom siv roj teeb lithium tshiab nrog cov peev txheej yav tom ntej
Cov khoom siv roj teeb lithium ua lub luag haujlwm tseem ceeb hauv cov txheej txheem ntawm cov roj teeb lithium, tshwj xeeb tshaj yog nyob rau hauv pem hauv ntej ntawm kev tsim khoom. Nyob rau hauv pem hauv ntej theem ntawm kev tsim khoom, cov kauj ruam tseem ceeb yog ua cov ntaub ntawv raw rau hauv cov ncej. Cov txheej txheem tseem ceeb muaj xws li slurry mixing, txheej, dov, slitting thiab ncej piece ntau lawm. Nws yog qhov tsim nyog sivlub tshuab nqus tsev tov khoomTxhawm rau sib tov cov khoom zoo thiab tsis zoo thiab cov kuab tshuaj ua kom slurry, siv lub tshuab electrode txheej kom sib npaug ntawm cov slurry ntawm cov ntawv ci hlau thiab tom qab ntawd ziab nws los ua cov ncej, siv lub tshuab dov xovxwm los ua cov txheej txheem coated, thiab siv cov ntawv xovxwm. electrode tuag cutter txiav cov ncej rau hauv qhov yuav tsum tau loj kom haum rau cov qauv roj teeb sib txawv.
Kev tshawb fawb thiab kev tsim cov khoom siv roj teeb lithium tshiab yog ib qho tseem ceeb tsav tsheb rau kev nce qib ntawm cov roj teeb technology. Kev txhim kho thiab siv cov ntaub ntawv tshiab no yuav tsum txhawb nqa kev txhim kho ntxiv ntawm lithium roj teeb kev ua tau zoo thiab ua tau raws li cov kev xav tau ntawm lub zog tshiab tsheb, lub zog cia thiab lwm yam kev lag luam kom muaj zog ceev, muaj kev nyab xeeb siab thiab lub neej ntev roj teeb. Cov hauv qab no yuav qhia ntau yam khoom siv roj teeb lithium tshiab uas muaj peev xwm yav tom ntej.
1. Silicon-Carbon Composite Negative Electrode Khoom
Lub vijtsam loj thiab muaj ntau hom kev ua haujlwm ntawm cov khoom siv davhlau ya nyob twg tau muab tso rau hauv cov kev cai tshiab rau lub roj teeb lub neej. Tam sim no gram muaj peev xwm ntawm lithium roj teeb cov ntaub ntawv yog tsawg thiab tsis tuaj yeem ua tau raws li qhov kev thov loj hlob rau cov roj teeb hauv cov khoom siv. Raws li ib yam ntawm yav tom ntej tsis zoo electrode cov ntaub ntawv, theoretical gram muaj peev xwm ntawm silicon-carbon composite cov ntaub ntawv yog hais txog 4200mAh / g los yog ntau tshaj, uas yog ntau tshaj 10 npaug tshaj li 372mAh / g ntawm graphite tsis zoo electrodes. Cov khoom siv no tuaj yeem ua kom lub peev xwm ntawm lub roj teeb, tab sis nws kuj ntsib teeb meem ntawm cov khoom siv pulverization thiab lub peev xwm poob los ntawm qhov ntim nthuav dav. Tam sim no, cov teeb meem no tau daws los ntawm kev siv silicon hmoov nano-sizing, silicon-carbon txheej, thiab doping.
2. Lithium Titanate
Lithium titanate roj teeb yog lithium-ion roj teeb nrog lithium titanate raws li cov khoom siv electrode zoo thiab cov khoom siv carbon raws li cov khoom tsis zoo electrode. Piv nrog cov roj teeb lithium-ion ib txwm muaj, cov roj teeb lithium titanate muaj qhov zoo ntawm kev nyab xeeb dua, kev pab lub neej ntev dua thiab kev them nqi sai dua. Nws cov khoom siv electrode zoo lithium titanate muaj cov tshuaj lom neeg ruaj khov thiab thermal stability, uas tuaj yeem txhim kho kev nyab xeeb ntawm lub roj teeb. Cov khoom siv tsis zoo electrode ntawm lithium titanate roj teeb siv cov khoom siv carbon, xws li ntuj graphite, dag graphite, carbon fiber, thiab lwm yam, uas muaj peev xwm ntau dua thiab ua haujlwm ntev dua.
3. Graphene
Graphene muaj cov khoom siv hluav taws xob zoo heev, thaj chaw siab tshwj xeeb, thiab hluav taws xob thiab ion conductivity. Nws tuaj yeem siv rau graphene tsis zoo electrode cov ntaub ntawv sib xyaw rau cov roj teeb hluav taws xob, cov khoom siv hluav taws xob zoo rau cov roj teeb lithium, thiab graphene functional coated aluminium foil, thiab lwm yam, uas txo qhov hnyav ntawm lub roj teeb thiab yog li txo qhov zoo ntawm tag nrho lub tsheb, prolongs lub roj teeb lub neej, thiab zoo heev txhim kho lub cruising ntau thiab them ceev ntawm hluav taws xob tsheb. Graphene ncaj qha siv los ua cov khoom siv hluav taws xob tsis zoo muaj qhov zoo ntawm qhov muaj peev xwm tshwj xeeb thiab kev them nyiaj siab thiab tso tawm ceev.
4. High-Nickel Ternary Positive Electrode Cov ntaub ntawv
High-nickel ternary cov ntaub ntawv (xws li NCM811) tau nyiam cov xim vim lawv lub zog ceev, tab sis lawv kuj ntsib teeb meem hauv kev nyab xeeb thiab ruaj ntseg. Cov kws tshawb fawb tau txhim kho lawv cov kev ua tau zoo thiab kev nyab xeeb los ntawm cov txheej txheej saum npoo, doping, thiab kev ua kom zoo dua qub.
5. Lithium-nplua nuj Manganese-raws li cov khoom siv hluav taws xob zoo
Lithium-nplua nuj manganese-raws li cov ntaub ntawv tau nyiam ntau xim vim lawv cov gram muaj peev xwm thiab high voltage platform, thiab yuav tsum tau tawg los ntawm lub zog ntom ntom qab nthab ntawm high-nickel ternary cov ntaub ntawv. Cov khoom siv no tuaj yeem txhim kho lub zog ceev ntawm lithium roj teeb, tab sis nws kuj muaj teeb meem xws li hluav taws xob qis thiab qeeb lithium ion diffusion. Ib qho kev daws teeb meem yog los txhim kho nws los ntawm txheej txheej thiab nano-sizing.
6. All-Solid-State Lithium roj teeb
All-solid-state lithium roj teeb siv cov khoom siv electrolyte los hloov cov kua electrolyte ib txwm muaj, uas muaj kev nyab xeeb dua thiab lub zog ntom ntom. Cov khoom tshiab no muaj ob qho tib si siab ionic conductivity thiab siab hluav taws xob conductivity, uas yog ntau tshaj 1, 000 zaug siab dua li cov khoom siv roj teeb ib txwm muaj, txhim kho cov kev ua tau zoo ntawm lub roj teeb.
7. Organic Electrode Khoom siv
Cov ntaub ntawv organic electrode tau nyiam cov xim vim lawv qhov zoo xws li kev rov ua dua tshiab, kev tiv thaiv ib puag ncig ntsuab, tus nqi qis thiab muaj peev xwm siab. Txawm li cas los xij, cov khoom siv no tseem ntsib teeb meem xws li solubility siab hauv electrolyte, tsis zoo conductivity thiab tsawg ntom. Nws cov yam ntxwv ntawm cov khoom, mechanism ntawm kev txiav txim, qauv-kev sib raug zoo, thiab lwm yam tseem yuav tsum tau nkag siab tob.
Acey tshiab zog yog ib tus kws tshaj lij kev lag luam tshwj xeeb hauvLithiumRoj teeb Lab Tshuab, Cov Khoom Siv Roj Teeb, Roj Teeb Pob Lub Tshuab thiab peb muab ib qho kev daws teeb meem rau cylindrical roj teeb pob los ua ke kab thiab lithium ion roj teeb khoom tsim khoom.Yog tias muaj kev txaus siab, thov koj xav tiv tauj peb.
