Feem ntau siv lithium ion roj teeb cov ntaub ntawv rov qab technology thiab kev loj hlob raws li txoj cai

Autor: Iflowpower – Portable Power Station ပေးသွင်းသူ

Nrog rau txoj kev loj hlob sai ntawm lub zej zog, peb cov khoom siv roj teeb lithium-ion rov ua dua tshiab kuj tseem txhim kho sai. Yog li koj nkag siab cov ncauj lus kom ntxaws txog lithium-ion roj teeb cov ntaub ntawv rov qab siv tshuab? Tom ntej no, cia Xiaobian coj sawv daws mus kawm ntxiv txog kev paub. Cov roj teeb lithium-ion muaj ntau yam kev siv, nrog rau kev siv cov ntsiav tshuaj, smartphones thiab supernators, xav tias yuav nyob ib ncig ntawm 2020, thiab daim ntawv thov ntawm cov roj teeb lithium-ion me me yuav nthuav tawm cov qauv tshiab.

Nyob rau tib lub sijhawm, qhov teeb meem rov ua dua tshiab ntawm ntau cov roj teeb lithium-ion pov tseg yog qhov tseem ceeb dua, siv cov txheej txheem ib txwm muaj xws li kev pov tseg, kev tsim hluav taws xob, thiab lwm yam, uas yog khib nyiab, thiab ib puag ncig tau ua rau muaj kuab paug, thiab txawm muab kev noj qab haus huv rau tib neeg. Hazard.

Tam sim no, kuv lub teb chaws tau dhau los ua ib qho tseem ceeb ntawm lithium-ion roj teeb tsim thiab siv hauv ntiaj teb, thiab cov roj teeb siv tau mus txog 8 billion. Yog tias koj tsis muaj kev ua haujlwm ntawm cov roj teeb lithium-ion tso tseg, pov tseg cov peev txheej loj, ua rau ib puag ncig, thiab ua rau tib neeg noj qab haus huv. Nws tuaj yeem pom tias kev lag luam rov ua dua tshiab ntawm cov roj teeb lithium ion khib nyiab yog dav.

Lub roj teeb lithium ion muaj cov phaj zoo electrode thiab lub phaj tsis zoo electrode, ib daim ntawv khi, ib qho electrolyte, thiab cov khoom sib cais. Hauv kev lag luam, cov chaw tsim khoom tseem ceeb yog siv lithium cobalt-cobaltate, lithium manganate, npib tsib xee-manganese acid lithium ternary khoom thiab lithium hlau phosphate ua cov khoom zoo, ntuj graphite thiab dag graphite ua cov khoom siv airective. Polyvinylidene fluoride (PVDF) yog siv dav siv zoo electrode nplaum uas muaj viscosity siab, zoo tshuaj stability thiab lub cev muaj zog.

Kev tsim cov roj teeb lithium ion tseem ceeb siv cov tshuaj lithium hexafluorophosphate (LiPF6) thiab cov kuab tshuaj organic ua cov electrolyte, thiab cov ntaub ntawv organic xws li polyethylene (PE) thiab polypropylene (PP) yog siv los ua lub roj teeb diaphragm. Cov roj teeb lithium-ion feem ntau suav hais tias yog ib puag ncig-phooj ywg thiab tsis muaj kuab paug ntsuab, tab sis cov roj teeb lithium-ion rov qab yuav ua rau muaj kuab paug. Txawm hais tias cov roj teeb lithium-ion tsis muaj cov khoom hnyav hnyav xws li mercury, cadmium thiab txhuas, tab sis cov khoom siv hluav taws xob zoo thiab tsis zoo, electrolyte, thiab lwm yam.

ntawm lub roj teeb tseem loj dua. Ntawm qhov tod tes, vim muaj kev lag luam loj loj ntawm cov roj teeb lithium ion, ntau cov roj teeb lithium ion pov tseg yuav tshwm sim yav tom ntej. Yuav ua li cas nrog cov roj teeb lithium-ion thiab txo lawv qhov cuam tshuam rau ib puag ncig yog qhov teeb meem ceev.

Ntawm qhov tod tes, txhawm rau ua kom tau raws li qhov xav tau loj ntawm kev ua lag luam, cov chaw tsim khoom roj teeb lithium-ion yuav tsum tsim cov roj teeb lithium-ion ntau los muab kev lag luam. Cov roj teeb lithium ion feem ntau yog tsim los ntawm cov hlau hnyav, cov organic sib txuas, thiab cov yas, nrog rau qhov sib piv ntawm cov hlau hnyav rau 15% -37%, thiab cov organic tebchaw suav txog 15%, thiab plastics suav txog 7%. Feem ntau, nyob rau hauv muaj pes tsawg leeg ntawm lithium ion roj teeb, qhov zoo electrode active khoom, uas yog, hnyav hlau, ib puag ncig, thiab muaj ntau dua cov nqi rov qab.

Cov txheej txheem rov qab los ntawm cov roj teeb lithium ion pov tseg yog qhov tseem ceeb nrog rau kev ua ntej, kev ua haujlwm thib ob thiab kev ua kom tob. Txij li thaum tseem muaj qee qhov hluav taws xob nyob hauv cov roj teeb pov tseg, cov txheej txheem pretreatment suav nrog cov txheej txheem tawm qhov tob, crushing thiab sorting lub cev. Lub hom phiaj ntawm kev kho mob theem nrab yog kom sib cais tag nrho cov zoo thiab tsis zoo electrode active tshuaj thiab substrates.

Feem ntau yaj siv kev kho cua sov thiab cov kuab tshuaj organic. Alkali solubility thiab electrolysis txoj kev paub qhov ua tiav kev sib cais ntawm ob qho tib si; Kev kho qhov tob Qhov tseem ceeb suav nrog ob txheej txheem, sib cais, thiab ua kom huv ob txheej txheem kom rho tawm cov khoom siv hlau muaj txiaj ntsig. Raws li kev faib tawm ntawm cov txheej txheem rho tawm, cov txheej txheem roj teeb rov qab tuaj yeem muab faib ua peb pawg: rov ua kom qhuav, rov qab ntub thiab rov ua kom muaj roj ntsha.

Cov txheej txheem ntub dej rov qab yog pulverized thiab yaj siv cov tshuaj reagent tsim nyog, thiab tom qab ntawd xaiv cov khoom sib cais ntawm cov hlau hauv cov tshuaj perfiltration los tsim cov khoom ncaj qha rov zoo siab qib hlau cobalt lossis lithium carbonate, thiab lwm yam. Cov txheej txheem ntub dej rov qab yog qhov tsim nyog rau kev rov qab los ntawm cov khoom siv tshuaj lom neeg uas ib txwm siv pov tseg lithium-ion roj teeb, nrog cov cuab yeej siv qis, thiab tsim nyog rau kev rov qab los ntawm cov roj teeb lithium-ion me me thiab nruab nrab. Yog li ntawd, txoj kev yog tam sim no dav siv.

Kev rov ua kom qhuav txhais tau hais tias cov ntaub ntawv rov qab ncaj qha lossis cov hlau muaj txiaj ntsig yam tsis muaj xov xwm xws li kev daws teeb meem. Ntawm lawv, txoj kev tseem ceeb ntawm kev siv yog lub cev sib cais thiab kub siab. Mishra et al.

Nws yog siv los rov qab cobalt thiab lithium hauv cov khib nyiab lithium ion roj teeb siv eosinophilic oxide, thiab cov teebmeem ntawm leaching lub sij hawm, kub, nplawm ceev thiab lwm yam ntawm cov leaching nyhuv ntawm hlau cobalt nyob rau hauv pov tseg lithium ion roj teeb. Cov txiaj ntsig tau pom tias txawm hais tias txoj kev no muab txoj hauv kev tshiab rau kev rov qab los ntawm cov ntsiab lus cobalt, qhov leaching tus nqi ntawm lithium acidophilic acid yog tsawg heev. Nyob rau hauv lub neej yav tom ntej, cov kab mob uas muaj kev cog qoob loo ntau dua yog piv nrog rau lwm txoj kev, cov tshuaj lom neeg leaching txoj kev muaj cov kua qaub me me, tus nqi yog qhov yooj yim, thiab kev cuam tshuam ib puag ncig me me.

Cov saum toj no yog cov ncauj lus kom ntxaws tsom xam ntawm kev paub txog cov cuab yeej rov qab ntawm lithium ion roj teeb cov ntaub ntawv. Nws yog ib qho tsim nyog yuav tsum khaws cov kev paub zoo hauv kev xyaum, kom koj tuaj yeem tsim cov khoom lag luam zoo dua thiab txhim kho zoo dua rau peb lub neej.