Cov roj teeb lithium uas muaj roj tsawg ua rau kub, tab sis koj puas nkag siab lithium roj teeb?

Dab tsi yog lithium roj teeb?

Lithium roj teeb yog ib hom roj teeb uas siv cov roj ntsha lithium hlau lossis lithium alloy raws li cov khoom tsis zoo electrode thiab siv cov kua hluav taws xob tsis zoo tshaj plaws. Lub roj teeb lithium uas ntxov tshaj plaws tau los ntawm tus tsim muaj tswv yim zoo nyob rau Edison. Vim tias cov tshuaj nquag siv ntau yam ntawm lithium hlau, kev ua, khaws cia thiab siv cov roj ntsha lithium muaj qhov zoo heev ntawm ib puag ncig. Yog li, cov roj ntsha lithium tsis tau siv ntev. Tam sim no, lithium roj teeb tau dhau los ua lub hauv paus, nws muab piv rau lub siab ntawm hluav taws xob tsheb.

Lithium roj teeb feem ntau muab faib ua ob pawg: 1. Lithium hlau roj teeb: Lithium hlau roj teeb feem ntau siv manganese dioxide ua cov khoom siv zoo, cov roj ntsha lithium lossis nws cov ntawv hlau yog cov khoom siv tsis zoo, thiab siv cov tshuaj tsis muaj kua hluav taws xob. 2. Lithium-ion roj teeb: Lithium-ion roj teeb feem ntau siv lithium alloy hlau oxide ua cov khoom zoo electrode, graphite ua cov khoom tsis zoo electrode, thiab cov hluav taws xob tsis-aqueous.

Txawm hais tias lub zog ntom ntawm lithium hlau roj teeb muaj qhov siab, kev xav, nws tuaj yeem ncav 3860 watts / kg. Txawm li cas los xij, vim nws qhov tsis muaj peev xwm ruaj khov thiab tsis tuaj yeem them, nws tsis tuaj yeem siv lub roj teeb hluav taws xob rau kev siv ntau zaus. Cov roj ntsha lithium-ion tau raug tsim los ua cov roj teeb hluav taws xob tseem ceeb vim tias nws muaj peev xwm yuav tau rov ua dua. Txawm li cas los xij, vim tias nws cov kev sib xyaw ntawm cov sib txawv, cov khoom sib xyaw ntawm cov khoom siv hluav taws xob zoo muaj qhov sib txawv zoo hauv ntau yam, uas tau ua rau muaj kev sib cav ntau dua ntawm cov kab ntawm cov khoom siv electrode zoo hauv kev lag luam.

Feem ntau, cov roj teeb hluav taws xob uas peb tau tham txog feem ntau yog cov roj ntsha lithium iron phosphate battery, lithium manganese oxide roj teeb, lithium cobalt oxide roj teeb, thiab ternary lithium roj teeb (ternary nickel cobalt manganese).

Cov roj teeb sab saum toj no muaj lawv qhov zoo thiab qhov tsis zoo, uas tuaj yeem muab piv me ntsis raws li hauv qab no:

Ternary lithium:

Qhov zoo: lub zog siab ntawm cov hluav taws xob, ua kom siab siab ntawm cov dej.

Kev tsis zoo: kev nyab xeeb tsis zoo, lub siab kub tsis kam tiv thaiv, lub neej tsis zoo, lub zog tsis txaus, thiab cov khoom ua kom muaj pa phem (qhov kub tau nce siab tom qab lub zog them hluav taws xob thiab tawm ntawm ternary lithium roj teeb, thiab cov pa tawm tom qab kub siab yooj yim heev) kom hlawv).

Lithium hlau phosphate:

Cov tswv yim zoo: lub neej ntev, them nqi thiab tawm tus nqi, muaj kev nyab xeeb zoo, ua haujlwm siab kub, cov khoom tsis muaj mob, tsis muaj nqi.

Qhov tsis zoo: lub zog qes, cov kais dej tsawg (qhov ntau).

Lithium manganese oxide:

Cov tswv yim zoo: cov kais dej kub ceev thiab cov nqi qis.

Qhov tsis zoo: qhov tsis zoo tiv thaiv qhov kub thiab txias, qhov kub nce ceev tom qab siv sijhawm ntev ntawm lithium manganate, thiab lub roj teeb lub neej raug mob hnyav (xws li Nissan lub tsheb hluav taws xob LEAF).

Lithium cobalt oxide: feem ntau siv hauv 3C cov khoom, nrog kev ua haujlwm tsis tshua muaj kev nyab xeeb thiab tsis tsim nyog rau lub roj teeb hluav taws xob.

Tam sim no qhov kev lag luam hluav taws xob qis hluav taws xob tau tshwm sim hauv cov qauv roj teeb lithium, feem ntau siv ob hom lithium iron phosphate thiab ternary lithium, yog li hnub no peb yuav tsom mus rau ob hom ternary lithium thiab lithium iron phosphate battery.

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Lithium iron phosphate battery: paub tab tab sis tsis txaus

Lithium iron phosphate electrode cov khoom siv yog tam sim no muaj kev nyab xeeb zoo tshaj plaws cov khoom siv cathode rau cov roj ntsha lithium-ion. Tsis tas li ntawd, nws lub neej kev ua haujlwm muaj peev xwm ncav cuag ntau dua 2000 zaug. Nws tuaj yeem siv rau kev them tus qauv (5 teev tus nqi) thiab tuaj yeem ncav cuag 2000 phaum. Ib qho ntxiv, vim kev lag luam paub tab Thiab tus nqi thev naus laus zis thiab kev siv tshuab poob qis, ntau lub chaw tsim khoom yuav txais cov roj ntsha lithium hlau phosphate roj rau ntau yam. Nws tuaj yeem hais tias qhov nce ntawm lub zog tshiab lub tsheb muaj kev sib cais tsis sib xws nrog lithium iron phosphate battery.

Txawm li cas los xij, lithium iron phosphate roj teeb muaj qhov ua kom luv luv, uas yog, kev ua haujlwm tsis zoo, txawm hais tias lawv yog nano-qhov loj me thiab cov pa roj carbon coated, qhov teebmeem no tseem tsis tau daws. Cov kev tshawb fawb pom tau tias yog lub roj teeb uas muaj peev xwm 3500mAh ua haujlwm nyob rau hauv ib puag ncig ntawm -10 ° C, tom qab tsawg dua 100 them-tawm mus ncig, lub zog yuav ua kom tawg mus rau 500mAh, uas yog qhov tsis txaus. Qhov no yog qhov tseeb tsis yog qhov zoo tshaj rau peb lub teb chaws'

Tsis tas li ntawd, tus nqi ntawm cov khoom siv npaj thiab kev tsim cov roj teeb muaj cov nqi ntau, cov roj teeb tau tsawg, thiab kev sib pauv tsis zoo. Qhov no tseem yog ib qho laj thawj tseem ceeb vim li cas ntau lub tsheb hluav taws xob ntshiab tsis tuaj yeem mus txog qhov muaj nuj nqis. Yog li, peb tuaj yeem pom tias ntau lub zog tshiab hauv tsheb tsheb (txawm tias hluav taws xob ntshiab lossis hluav taws xob hluav taws xob), lossis qee lub tsheb hluav taws xob tshiab pheej yig, yuav xaiv cov roj ntsha lithium iron phosphate rau cov laj thawj txawv. Nws tuaj yeem hais tias kev siv cov roj ntsha lithium iron phosphate battery muaj lub hauv paus tsis txaus rau cov khoom lag luam loj thiab kev txhawb zog ntawm lub zog tshiab.

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Ternary polymer lithium roj teeb: lub neej yav tom ntej tsis so

Ternary polymer lithium roj teeb hais txog lub roj teeb lithium uas siv cov roj ntsha lithium nickel cobalt manganate (Li (NiCoMn) O2) ua cov khoom siv cathode. Qhov ua ntej ntawm cov khoom lag luam ternary composite cathode yog nickel ntsev, cobalt ntsev, thiab ntsev manganese. Raws li cov ntaub ntawv raw, qhov sib piv ntawm nickel, cobalt thiab manganese sab hauv tuaj yeem hloov kho raws li qhov xav tau tiag tiag. Ternary lithium roj teeb muaj lub zog ntau dua, tab sis lawv txoj kev nyab xeeb yog feem ntau nug.

Qhov laj thawj rau qhov no yog tias txawm hais tias ob qhov khoom siv no yuav ploj mus thaum lawv kub txog qhov ntsuas kub, cov khoom siv ternary lithium yuav ploj mus ntawm qhov qis dua 200 degrees, thaum cov khoom siv lithium iron phosphate yog li 800 degrees. Thiab tshuaj lom neeg cov tshuaj tiv thaiv ntawm cov khoom siv ternary lithium yog ntau dua, nws yuav tso cov pa oxygen, thiab lub tshuab hluav taws xob yuav hlawv sai sai raws li kev ua haujlwm ntawm qhov kub thiab txias, ua rau muaj kev cuam tshuam cov saw. Txhawm rau nws yooj yim, cov ntaub ntawv ternary lithium muaj feem ntau yuav ntes hluav taws dua li cov ntaub ntawv lithium iron phosphate. Tab sis nws yuav tsum raug sau tseg tias peb tab tom tham txog cov ntaub ntawv, tsis yog roj teeb uas tau dhau los ua cov khoom tiav.

Vim tias muaj qhov ua tau zoo kev nyab xeeb ntawm ternary lithium cov ntaub ntawv, cov tuam ntxhab tseem tabtom ua haujlwm los tiv thaiv kom tsis txhob muaj xwm txheej. Raws li cov yam ntxwv yooj yim pyrolysis ntawm cov ntaub ntawv ternary lithium, cov tuam ntxhab yuav ua ntau dhau ntawm kev tiv thaiv tiv thaiv (OVP), dhau ntawm kev tiv thaiv tawm (UVP), dhau ntawm kev tiv thaiv kub (OTP), thiab dhau ntawm kev tiv thaiv tam sim no (OCP). kev rau siab. Yog li, qhov tshwm sim tshwm sim rau kev sib txuas ntxiv yuav tsum xav txog seb tus neeg tsim khoom hauv' s cov haujlwm hauv cov kev sib txuas hauv qhov chaw, tsis yog tsuas yog tso cov zaub mov vim txhawm chim.

Yog li dab tsi yog tam sim no siv ntawm ob lub roj teeb no? Cia' s tsom rau ib co ntawm cov ntaub ntawv. Thaum Lub Kaum Ib Hlis xyoo tas los, lub peev xwm ntawm lub tsheb npav hluav taws xob nrog lithium iron phosphate roj teeb tau li 64.9%, thiab lub peev xwm nruab ntawm ternary lithium roj teeb tsuas yog 27.6%. Ntawm qhov tsis sib xws, hauv cov lag luam hluav taws xob ntshiab lub tsheb lag luam, lub peev xwm nruab ntawm ternary lithium roj teeb thaum lub Kaum Ib Hlis xyoo tas los ntau dua 76%.

Raws li txoj kev xav, lub roj teeb uas peb xav tau yuav tsum muaj lub zog hluav taws xob ntau, lub ntim ntau ntau, kev nyab xeeb zoo, ntsuas kub thiab tsis kub tsis kam, lub neej ntev kev ua haujlwm, tsis muaj tshuaj lom thiab tsis muaj mob, muaj lub zog hluav taws xob them thiab tawm, thiab sib sau txhua yam zoo thiab qis nqi. Tab sis tam sim no tsis muaj cov roj teeb zoo li no, yog li muaj kev hloov pauv ntawm qhov zoo thiab qhov tsis zoo ntawm ntau hom roj teeb. Ntxiv mus, hluav taws xob tsheb sib txawv nyias muaj nyias cov cai rau roj teeb, yog li lub roj teeb uas haum dua yog nyob ntawm koj tus kheej xaiv!