Taug kev mus rau National Demonstration Power Station ntawm Cua thiab Hnub Ci Cia thiab Kev Xa Mus Hauv Nroog Zhangbei, koj tuaj yeem pom kab ntawm cov cua daj cua dub thiab ci ntsa iab xiav photovoltaic panels ntawm cov nyom ntsuab.

Qhov no yog qhov loj tshaj plaws cua-hnub ci cia thiab kis tau tus mob project nyob rau hauv kuv lub teb chaws. Nws tau txais lub ntiaj teb thawj cua-hnub cia thiab kev sib txuas ua ke ua ke lub zog tsim cov tswv yim tsim kho thiab cov txheej txheem kev. Nws yog ib qho kev qhia tshiab lub zog ua qauv qhia ua ke nrog lub zog cua, photovoltaics, lub zog cia khoom siv thiab kev xa hluav taws xob ntse. .

Qhov chaw nres tsheb fais fab no tuaj yeem “kho” cua thiab hnub ci cov peev txheej uas “nyuaj rau kev kwv yees, nyuaj rau kev tswj, thiab nyuaj rau kev xa tawm”, thiab hloov lawv mus rau hauv cov khoom siv hluav taws xob zoo thiab txhim khu kev qha ntsuab rau kev nkag mus rau hauv daim phiaj, thiab tuaj yeem ua haujlwm. Hauv “kev hloov pauv yooj yim” thiab “ncej shaving thiab puv kwj ha” Hloov hloov pauv ntawm hom. Nyob rau hauv cov ntaub ntawv ntawm kev poob ntawm cov khoom siv hluav taws xob sab nraud los ntawm daim phiaj hluav taws xob, lub zog cia hluav taws xob chaw nres tsheb tuaj yeem tswj tau qhov kev ua haujlwm ib txwm muaj ntawm daim phiaj hluav taws xob los ntawm kev muaj peev xwm pib nws tus kheej.

Txoj kev loj hlob ntawm lub zog cia tshuab yog ib qho tseem ceeb ntawm cov thev naus laus zis los txhawb kev tsim hluav taws xob tshiab thiab txhim kho kev ruaj ntseg thiab ruaj khov ntawm daim phiaj hluav taws xob. Ntawm ntau hom kev siv hluav taws xob hluav taws xob khaws cia thev naus laus zis, lithium titanate roj teeb muaj cov yam ntxwv ntawm lub neej ntev thiab kev nyab xeeb kev ua haujlwm zoo, uas yog qhov zoo rau cov ntawv thov scenarios ntawm daim phiaj hluav taws xob cia. Txawm li cas los xij, tus nqi siab ntawm cov roj teeb lithium titanate tsis yog qhov tsim nyog rau Kev Siv Hluav Taws Xob Loj Loj.

Hauv qhov no, Tuam Tshoj Hluav Taws Xob Hluav Taws Xob Tshawb Fawb Lub Tsev Haujlwm tau koom nrog ntau lub koom haum los koom ua pab pawg “Kev tsim kho cov roj teeb lithium titanate tus nqi qis rau lub zog cia thiab kev tsim kho thiab kev siv cov txheej txheem kev sib koom ua ke”. Tom qab xyoo ntawm kev tshawb fawb, pab pawg neeg ua haujlwm, raws li cov roj teeb lithium titanate qub, tau npaj cov khoom siv roj teeb lithium titanate thiab cov txheej txheem kev tsim kho dua tshiab thiab cov kev daws teeb meem kom tau raws li qhov xav tau ntawm kev siv lub zog cia, thiab tsim cov qib micron lithium titanate khoom. . Lub lithium titanate roj teeb rau lub zog cia tsim los ntawm qhov project tswj cov yam ntxwv ntawm lub neej ntev, thaum tus nqi txo qis heev. Hauv 2017 Beijing Science thiab Technology Awards, qhov project yeej qhov khoom plig thib ob.

Lub qhov hluav taws xob tom ntej rau lub zog tshiab

Lub zog cia yog suav tias yog qhov hluav taws xob txuas ntxiv rau lub zog tshiab. Raws li kev siv thev naus laus zis los txhawb txoj kev loj hlob ntawm kev lag luam hluav taws xob tshiab yav tom ntej, kev lag luam cia hluav taws xob yuav ua lub luag haujlwm tseem ceeb hauv kev sib txuas hluav taws xob tshiab, lub zog tshiab tsheb, cov phiajcim ntse, microgrids, kev faib hluav taws xob, thiab lub zog hauv tsev. cia systems.

“Qhov laj thawj rau kev txhim kho ntawm lub zog cia yog tias lub tshuab hluav taws xob photovoltaic thiab cua tshuab hluav taws xob tsis sib xws thiab tsis ruaj khov. Yog li ntawd, kev koom tes ntawm lub zog cia tshuab yog xav tau los muab lub zog ruaj khov thiab txhim khu kev qha. ” Tus Thawj Coj ntawm Lub Zog Cia Roj Teeb Ontology Research Office, Tuam Tshoj Hluav Taws Xob Tshawb Fawb Lub Tsev Haujlwm Yang Kai hais rau cov neeg sau xov xwm.

Kev siv cov cuab yeej siv hluav taws xob loj loj tuaj yeem txhawb kev txhim kho lub zog tauj dua tshiab, txhim kho kev nyab xeeb thiab ruaj khov ntawm daim phiaj hluav taws xob, txhim kho cov khoom siv hluav taws xob zoo, thiab txo qhov tsis sib xws ntawm cov khoom siv hluav taws xob thiab kev xav tau.

Lub tshuab hluav taws xob loj loj ua haujlwm los ntawm txhua yam ntawm lub zog tsim hluav taws xob, kev xa tawm, kev faib tawm, thiab kev siv. Nws daim ntawv thov tuaj yeem tsis tsuas yog txhim kho cov kev ua tau zoo ntawm kev siv hluav taws xob ib txwm muaj, tab sis kuj coj kev hloov pauv rau kev npaj, tsim, teeb tsa, kev ua haujlwm thiab kev tswj hwm thiab siv cov phiaj xwm hluav taws xob. Nyob rau hauv qhov kev nkag siab no, lub zog cia technology yog ib tug technologies commanding qhov siab nrog lub teb chaws lub tswv yim tseem ceeb, thiab kev loj hlob ntawm lub zog cia technology yog tiag tiag “kho rau yav tom ntej.”

Ib qho “zoo nkauj paj” hauv cov roj teeb lithium-ion

Nws yog to taub hais tias lub zog cia tshuab yog tsuas yog muab faib ua mechanical zog cia, electrochemical zog cia, electromagnetic zog cia thiab theem hloov zog cia. Nyob rau hauv xyoo tsis ntev los no, electrochemical zog cia technology sawv cev los ntawm lithium-ion roj teeb muaj cov yam ntxwv ntawm lub zog loj teev, hloov qhov chaw xaiv, thiab ceev teb ceev, uas ua tau raws li cov kev cai ntawm lub hwj chim systems thiab txoj kev loj hlob qauv ntawm ntse daim phiaj, thiab tau ua. suav hais tias yog kev tshawb fawb tsom los ntawm cov chaw tshawb fawb hauv ntau lub teb chaws. Ua lub zog loj tshaj plaws ntawm lub zog txuag hluav taws xob. Lithium-ion roj teeb yog ib hom “roj lub rooj zaum roj teeb”. Cov electrodes zoo thiab tsis zoo yog tsim los ntawm ob lub tebchaw lossis cov khoom yooj yim uas tuaj yeem deintercalate lithium ntau zaus. Thaum them nyiaj, cov khoom siv hluav taws xob zoo yog delithified, thiab lithium ions nkag mus rau hauv electrolyte thiab nkag mus rau cov khoom sib cais kom muab tso rau hauv qhov tsis zoo electrode. Cov electrode zoo dhau los ua cov tshuaj tiv thaiv oxidation. Qhov sib txawv yog muaj tseeb thaum tso tawm.

Lithium-ion roj teeb technology tau nyob rau hauv lub xeev ntawm kev loj hlob sai nrog kev tshawb fawb ntawm cov khoom siv roj teeb electrode. Tam sim no nws tau nthuav dav los ntawm lithium cobalt oxide roj teeb mus rau ternary systems, lithium manganate, lithium hlau phosphate, lithium titanate thiab lwm yam roj teeb tshuab ua ke. Lub roj teeb lithium-ion tshiab nrog lithium titanate raws li qhov tsis zoo electrode tawg los ntawm cov kev txwv ntawm graphite raws li qhov tsis zoo electrode, thiab muaj kev ua tau zoo dua li cov roj teeb lithium-ion, ua rau nws yog ib qho kev cia siab tshaj plaws ntawm cov roj teeb. Txog qhov kawg no, Yang Kai tau qhia rau cov neeg sau xov xwm plaub qhov zoo ntawm lithium titanate roj teeb uas tuaj yeem sawv tawm:

Kev nyab xeeb zoo thiab ruaj khov. Vim hais tias cov khoom siv lithium titanate anode muaj qhov muaj peev xwm ua tau zoo lithium, kev tsim thiab nag lossis daus ntawm cov hlau lithium raug zam thaum lub sijhawm them nyiaj. Thiab vim tias nws cov peev xwm sib npaug siab dua qhov txo qis ntawm feem ntau cov kuab tshuaj electrolyte, nws tsis hnov ​​​​mob nrog cov electrolyte thiab tsis tsim ib qho khoom -Cov zaj duab xis passivation ntawm cov kua interface zam qhov tshwm sim ntawm ntau qhov kev cuam tshuam, yog li txhim kho kev nyab xeeb zoo. . “Lub zog txuag hluav taws xob yog tib yam li lub tsheb hluav taws xob, thiab kev nyab xeeb thiab kev ruaj ntseg yog qhov ntsuas tseem ceeb tshaj plaws.” Yang Kai hais.

Zoo heev ceev ceev kev ua tau zoo. Lub sij hawm them nyiaj ntev dhau lawm ib txwm yog ib qho teeb meem uas nyuaj rau kev kov yeej hauv kev tsim hluav taws xob tsheb. Feem ntau, qeeb-them lub tsheb npav hluav taws xob siv hluav taws xob, thiab lub sijhawm them nyiaj tsawg kawg yog 4 teev, thiab lub sijhawm them ntawm ntau lub tsheb hluav taws xob ntshiab yog ntev li 8 teev. Lub roj teeb lithium titanate tuaj yeem them tag nrho li ntawm kaum feeb, uas yog qhov zoo tshaj plaws los ntawm cov roj teeb ib txwm muaj.

Lub neej voj voog ntev. Piv nrog rau cov ntaub ntawv graphite feem ntau siv hauv cov roj teeb lithium-ion ib txwm muaj, cov ntaub ntawv lithium titanate tsis tshua muaj qis lossis nthuav dav hauv cov qauv qauv thaum lub sijhawm them nyiaj thiab tso tawm lithium. / Qhov teeb meem ntawm electrode qauv kev puas tsuaj tshwm sim los ntawm cell ntim strain thaum intercalating lithium ions, yog li nws muaj kev ua haujlwm zoo heev. Raws li kev sim cov ntaub ntawv, qhov nruab nrab lub neej ntawm cov roj teeb lithium hlau phosphate zoo tib yam yog 4000-6000 zaug, thaum lub neej voj voog ntawm lithium titanate roj teeb tuaj yeem ncav cuag ntau dua 25000 zaug.

Kev ua tau zoo nyob rau hauv dav kub kuj. Feem ntau, cov tsheb fais fab yuav muaj teeb meem thaum them thiab tawm ntawm -10 ° C. Lithium titanate roj teeb muaj qhov kub thiab txias tsis kam thiab muaj zog ua haujlwm ntev. Lawv tuaj yeem raug them thiab tso tawm ib txwm nyob ntawm -40 ° C mus rau 70 ° C, txawm tias nyob rau hauv lub teb chaws khov qaum teb, Tseem nyob rau sab qab teb kub, lub tsheb yuav tsis cuam tshuam rau kev ua haujlwm vim roj teeb “poob siab”, tshem tawm cov kev txhawj xeeb ntawm cov neeg siv. .

Nws yog qhov tseeb raws li cov txiaj ntsig no uas cov roj teeb lithium titanate tau dhau los ua “kev xav zoo” hauv kev txhim kho lithium-ion roj teeb thev naus laus zis.