Lithium-ion roj teeb nqi ib Kwh

Taw qhia

Qhov no yog lub roj teeb rechargeable uas lithium-ion tsim lub zog. Lub roj teeb lithium-ion muaj qhov tsis zoo thiab zoo electrodes. Qhov no yog lub roj teeb rechargeable uas lithium ions taug kev los ntawm qhov tsis zoo electrode mus rau qhov zoo electrodes ntawm ib qho electrolyte. Cov paug tawm mus rau pem hauv ntej thiab rov qab thaum them nyiaj. Ntau yam khoom siv siv lithium-ion (Li-ion) hlwb, suav nrog cov khoom siv, kev ua si, Bluetooth headphones, portable power instruments, me me thiab loj cov khoom siv hluav taws xob, tsheb fais fab, thiab electrochemical.lub zog ciakhoom siv. Lawv tuaj yeem ua rau muaj kev phom sij rau kev noj qab haus huv thiab ib puag ncig yog tias tsis ua raws li qhov kawg ntawm lawv lub neej.

Txoj Kev

Qhov kev xav tau ntawm kev lag luam nce rau Li-ion roj teeb tuaj yeem raug ntaus nqi ntau rau lawv qhov "lub zog ceev." Qhov kom muaj nuj nqis ntawm lub zog uas lub kaw lus tuav hauv ntau qhov chaw raug xa mus rau nws "lub zog ceev." Thaum khaws cov khoom siv hluav taws xob tib yam,lithium roj teebQhov tseeb tuaj yeem yog nyias thiab sib dua dua li lwm hom roj teeb. Qhov kev txo qis no tau ua kom cov neeg siv khoom txaus siab ntawm cov khoom siv me me thiab cov khoom siv wireless.

Lithium-ion roj teeb Tus nqi Ib Kwh Trend

Kev nce hauv cov nqi roj teeb tuaj yeem thawb tawm cov qauv piv txwv xws li $ 60 ib kWh tau teeb tsa los ntawm US Lub Tsev Haujlwm Saib Xyuas Hluav Taws Xob raws li qhov pib tawg-txawm rau EVs tawm tsam cov cav ntawm cov hluav taws xob sab hauv. Raws li kev tshawb fawb txog roj teeb txhua xyoo ntawm Bloomberg New Energy Finance (BNEF), lub ntiaj teb cov nqi roj teeb nruab nrab poob qis 6% ntawm 2020 thiab 2021, txawm li cas los xij lawv yuav nce ntxiv rau yav tom ntej.

Raws li kev tshawb fawb, lithium-ion roj teeb pob nqi yog $ 132 ib kWh hauv 2021, poob los ntawm $ 140 ib kWh hauv 2020, thiab $ 101 ib kWh ntawm qib ntawm tes. Raws li kev txheeb xyuas, cov nqi khoom lag luam nce ntxiv tau rub cov nqi rov qab, nrog rau $ 135 kwh nruab nrab pob nqi xav tau rau xyoo 2022. Raws li BNEF, qhov no yuav txhais tau tias lub sijhawm uas tus nqi poob qis dua $ 100 ib kWh - feem ntau suav tias yog qhov tseem ceeb. Lub ntsiab lus tseem ceeb rau EV kev them taus - yuav raug ncua los ntawm ob xyoos.

Cov tuam txhab tsheb muaj lub hom phiaj siab ntawm lawv tus kheej, xws li Toyota lub hom phiaj ntawm kev txiav cov nqi EV hauv ib nrab hauv kaum xyoo. Yog li ua tag nrho lub tebchaws thiab lub xeev. Nws puas yuav tawm tsam rov qab lub hom phiaj yog tias cov hlwb tau ua tus nqi ntau dua hauv ib xyoos lossis ob xyoos? Qhov ntawd tseem yuav tsum tau ua raws li cov khoom siv tshiab hauv qhov nyuaj EV-kev coj ua trendline.

Roj teeb nqi nce

Cov nqi roj teeb lithium-ion tau nce mus rau ntau dua. Yog vim li cas tom qab qhov nce ntawm cov nqi yog cov khoom siv.

Cia peb saib yog vim li cas cov nqi ntawm cov roj teeb tau nce siab heev:

Tus nqi ntawm cov ntaub ntawv ntawm lithium-ion tau nce ntxiv.

Txawm hais tias tus nqi ntawm cov roj teeb tau poob qis txij li xyoo 2010, tus nqi tseem ceeb nce hauv cov hlau tseem ceeb xws li lithium tau cuam tshuam rau lawv lub neej ntev. Cov nqi roj teeb EV yuav txhim kho li cas yav tom ntej? Tus nqi ntawmlithium-ion roj teebtuaj yeem nce ntxiv rau yav tom ntej mus rau qhov ntau dua.

Kev nce nqi hauv nqe tsis yog qhov tshiab.

Nws tsis yog thawj qhov kev tshawb fawb los taw qhia rau cov khoom siv tsis txaus raws li qhov ua tau ua ntej kom nce nqi roj teeb. Lwm cov ntawv tshaj tawm tau txheeb xyuas cov npib tsib xee raws li qhov ua tsis tau, tsis yog txhua lub hlwb xav tau nws.

Txawm li cas los xij, raws li BNEF, kev txhawj xeeb txog kev xa khoom tau txawm tias tau tsav tus nqi ntawm cov khoom siv rau tus nqi qis.lithium hlau phosphate(LFP) tshuaj, uas tam sim no nyiam los ntawm ntau lub tuam txhab Suav loj thiab cov tuam txhab roj teeb thiab tau txais kev txhawb nqa los ntawm Tesla. Raws li kev tshawb fawb, Suav LFP cov neeg tsim khoom ntawm tes tau txhawb nqa lawv cov nqi los ntawm 10% mus rau 20% txij lub Cuaj Hli.

Tus Nqi Lithium-Ion Roj Teeb Cell Tus Nqi Npaum Li Cas?

Cia peb rhuav tshem tus nqi ntawm lithium-ion roj teeb cell nqi. Raws li BloombergNEF cov txheeb cais, tus nqi ntawm txhua lub cell lub cathode tso nyiaj rau ntau tshaj li ib nrab ntawm tus nqi ntawm tes.

V Battery Cell Component % ntawm Cell Nqi
Cathode 51%
Tsev thiab lwm yam khoom siv 3%
Electrolyte 4%
Separator 7%
Manufacturing thiab depreciation 24%
Anode 11%

Los ntawm saum toj no kev puas tsuaj ntawm lithium-ion roj teeb nqi, peb tau pom tias cov cathode yog cov khoom kim tshaj plaws. Nws suav txog 51% ntawm tag nrho cov nqi.

Vim li cas Cathodes thiaj muaj nqi dua?

Lub cathode muaj ib tug zoo charge electrode. Thaum lub cuab yeej tso lub roj teeb, cov electrons thiab lithium ions taug kev los ntawm anode mus rau cathode. Lawv nyob ntawd kom txog rau thaum lub roj teeb tau them rov qab. Cathodes yog qhov tseem ceeb tshaj plaws ntawm cov roj teeb. Nws cuam tshuam rau ntau yam, kev ua tau zoo nrog rau thermal kev nyab xeeb ntawm cov roj teeb. Li no, qhov no kuj yog EV roj teeb.

Lub cell muaj ntau yam hlau. Piv txwv li, nws muaj nickel thiab lithium. Niaj hnub no, cov txheej txheem cathode feem ntau yog:

Lithium hlau phosphate (LFP)

Lithium nickel cobalt aluminium oxide (NCA)

Lithium nickel manganese cobalt (NMC)

Cov roj teeb uas suav nrog cov cathode yog qhov xav tau zoo, nrog rau cov tuam txhab xws li Tesla scrambling kom tau txais cov ntaub ntawv raws li EV kev muag khoom nce. Nyob rau hauv qhov tseeb, cov khoom nyob rau hauv lub cathode, nrog rau lwm tus nyob rau hauv lwm yam cellular Cheebtsam, ua rau ib ncig ntawm 40% ntawm tag nrho cov nqi ntawm tes.

Nqe ntawm Lwm Cov Cheebtsam ntawm Lithium-Ion Roj Teeb

Qhov seem 49 feem pua ​​​​ntawm cov nqi ntawm tes muaj cov khoom siv uas tsis yog cov cathode. Cov txheej txheem tsim khoom, uas suav nrog kev ua cov electrodes, kev sib koom ua ke ntawm ntau yam khoom, thiab ua kom tiav ntawm tes, suav txog 24% ntawm tag nrho cov nqi. Lub anode yog lwm qhov tseem ceeb ntawm cov roj teeb, suav txog 12% ntawm tus nqi tag nrho - kwv yees li ib feem plaub ntawm cov cathode feem. Lub Li-ion cell lub anode muaj cov organic lossis inorganic graphite, uas yog tus nqi tsawg dua li lwm cov khoom siv roj teeb.

Xaus

Txawm li cas los xij, cov nqi raw khoom nce ntxiv qhia tias cov nqi ntim nruab nrab tuaj yeem loj hlob mus rau 5 / kWh hauv cov ntsiab lus nominal los ntawm 2022. Yog tias tsis muaj kev nce qib sab nraud uas tuaj yeem txo qhov cuam tshuam no, lub sijhawm ntawm cov nqi poob qis dua 0 / kWh yuav ncua 2. xyoo. Qhov no yuav muaj kev cuam tshuam rau EV tus nqi pheej yig thiab cov chaw tsim khoom tau txais txiaj ntsig, nrog rau kev lag luam ntawm cov khoom siv hluav taws xob.

Kev nqis peev R & D txuas ntxiv, nrog rau kev muaj peev xwm loj hlob thoob plaws hauv lub network faib, yuav pab txhawb kev siv roj teeb thiab cov nqi qis dua lwm tiam. BloombergNEF cia siab tias cov kev hloov tshiab tiam tom ntej xws li silicon thiab lithium-based anodes, solid-state chemistry, thiab cov tshuaj cathode tshiab thiab cov tswv yim tsim tawm ntawm tes yuav ua lub luag haujlwm tseem ceeb hauv kev pab txhawb cov nqi txo.

Post lub sij hawm: May-09-2022