Kev nrhiav tsis tu ncua ntawm lub zog ntau dua, lub neej ntev dua, thiab txhim kho kev nyab xeeb hauv lithium{0}}ion roj teeb tau tso qhov tsis tau pom dua los ntawm qhov zoo thiab kev ntseeg siab ntawm kev tsim hluav taws xob. Ib qho tseem ceeb, tab sis feem ntau underestimated, qhov tseem ceeb nyob rau hauv cov txheej txheem no yog lub interfacial adhesion ntawm active electrode cov ntaub ntawv thiab lawv cov hlau ntawv tam sim no collectors. Tsis muaj zog adhesion ua rau delamination, nce kev tiv thaiv sab hauv, thiab kev puas tsuaj loj. Tsab ntawv xov xwm no tshawb txog qhov kev kho mob corona siab npaum li cas muab lub zog muaj zog, scalable, thiab eco- cov kev daws teeb meem zoo heev los txhawb cov roj teeb txheej ua kom ntev los ntawm kev ua kom lub zog saum npoo thiab txhawb kev sib txuas zoo dua.
Adhesion Challenge nyob rau hauv Roj Teeb Manufacturing
Hauv plawv ntawm txhua lub lithium- ion roj teeb yog cov khoom siv hluav taws xob: slurry ntawm cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov hlua khi coated rau nyias cov hlau foils (feem ntau yog txhuas rau cathode thiab tooj liab rau lub anode). Qhov kev ua tau zoo thiab kev siv lub neej ntev ntawm lub roj teeb yog intrinsically txuas rau kev ncaj ncees ntawm cov txheej no.
Cov teeb meem tseem ceeb tshwm sim los ntawm qhov tsis zoo adhesion muaj xws li:
1. Delamination:Thaum lub sij hawm calendering txheej txheem los yog rov tsub nqi - paug cycles, mechanical stress thiab lithium{1}}ion intercalation tuaj yeem ua rau cov txheej txheem cais tawm ntawm cov ntawv ci. Qhov no cuam tshuam txoj hauv kev hluav taws xob, ua rau muaj peev xwm ploj mus sai.
2. Nce Internal Resistance:Kev sib cuag tsis zoo ntawm cov khoom siv hluav taws xob thiab cov khoom siv tam sim no tsim hluav taws xob ntau dua, txo cov hluav taws xob tso tawm thiab ua kom tsis muaj cua sov.
3. Manufacturing Defects:Kev adhesion tsis txaus tuaj yeem ua rau txheej txheej tawg, pinholes, thiab plua plav thaum lub sijhawm slitting thiab tuav, ua rau cov khoom seem thiab ua rau muaj kev nyab xeeb.
4. Ua tsis tiav ntxov:Delamination thiab siab tsis kam yog qhov tseem ceeb hauv kev txo lub voj voog lub neej thiab lub neej thiab muaj peev xwm thermal khiav.
Cov txheej txheem ib txwm siv los txhim kho adhesion, xws li siv cov khaubncaws sab nraud povtseg los yog cov tshuaj lom neeg hnyav, feem ntau tuaj nrog kev lag luam -offs xws li txo qis zog los yog qhia impurities.
Kev kho mob Corona: Ib Nto Lub Zog Hloov Kho
Kev kho mob Corona yog ib qho zoo -tsim atmospheric plasma technology uas siv lub siab -voltage tso tawm kom ionize huab cua nyob ib puag ncig ib puag ncig cov khoom. Rau cov roj teeb electrode foils, cov txheej txheem no muab cov kev hloov kho kom muaj zog thiab meej.
Nws ua haujlwm li cas:
Raws li cov ntawv hlau hla dhau ntawm cov menyuam hauv av hauv qab lub chaw kho mob corona, lub siab - zaus electrode emissions tswj corona tawm. Qhov kev tso tawm no tsim cov plasma uas muaj cov ions, electrons, thiab cov molecules zoo siab (xws li ozone). Thaum cov tsiaj muaj zog sib tsoo nrog cov ntawv ci saum npoo, ob qhov xwm txheej tseem ceeb tshwm sim:
1. NtoSurface Activation:Lub plasma zoo tshem tawm cov kab mob sib kis thiab cov ciam teb tsis muaj zog, nthuav tawm cov xim hlau zoo nkauj.
2. FunctionalFunctionalization: Qhov tseem ceeb tshaj, cov txheej txheem grafts heev reactive polar functional pawg (feem ntau hydroxyl [-OH], carbonyl [C=O], thiab carboxyl [-COOH]) rau ntawm daim tawv nqaij.
Qhov kev hloov pauv no los ntawm qhov qis-zog, tsis yog-polar nto mus rau qhov siab- zog, polar nto yog lub hauv paus txheej txheem rau kev txhim kho adhesion.
Vim li cas Advanced Corona Treaters yog qhov zoo tshaj plaws rau kev tsim roj teeb
Cov kws kho mob corona niaj hnub tsim los rau kev lag luam roj teeb muaj qhov zoo sib xws ntawm cov qauv yooj yim thiab lwm cov thev naus laus zis:
Precision & Uniformity:Advanced systems feature segmented electrode tuag uas tso cai rau - lub sij hawm tswj nyob rau hauv lub web dav. Qhov no ua kom txhua millimeter ntawm cov ntawv ci, suav nrog cov npoo, tau txais kev kho mob zoo kawg nkaus, qhov tseem ceeb, tseem ceeb rau kev ua haujlwm zoo electrode.
Kev Tswj Ozone:Kev sib xyaw ua ke thiab ua kom zoo ozone kev puas tsuaj yog qhov yuav tsum tau ua. Cov tshuab no hloov ozone (O₃) rov qab rau hauv cov pa oxygen (O₂), ua kom muaj kev nyab xeeb ntawm kev ua haujlwm thiab ua raws li cov cai nruj me ntsis.
Kev huv huv & Tsis yog- paug:Tsis zoo li cov tshuaj primers, kev kho mob corona ntxiv tsis muaj tshuaj txawv teb chaws rau cov ntawv ci. Nws yog cov txheej txheem qhuav, lub cev uas tshem tawm qhov kev pheej hmoo ntawm kev qhia impurities uas tuaj yeem cuam tshuam electrolyte stability lossis cell chemistry.
Hauv -Line Speed & Scalability:Tsim los rau siab - yob ceev- rau - yob cov kab ntau lawm, cov kws kho mob niaj hnub tuaj yeem ua haujlwm ntawm qhov nrawm tshaj 100 m / min, ua rau lawv zoo kawg nkaus rau kev tsim khoom loj xws li Gigafactoriesactories.
Tiag tiag - Sijhawm Saib Xyuas:Cov kws kho mob zoo sib xyaw ua ke nrog cov txheej txheem kev tshuaj xyuas cov cuab yeej los saib xyuas thiab teev cov qib kho mob ( ntsuas hauv Dynes / cm), muab tag nrho traceability thiab kev ruaj ntseg zoo.
Kev cuam tshuam rau roj teeb kev ua tau zoo thiab kav ntev
Kev koom ua ke tus kws kho mob siab tshaj plaws rau hauv cov khoom siv hluav taws xob tsim hluav taws xob hluav taws xob tsim khoom tau txais txiaj ntsig ncaj qha thiab ntsuas tau:
Enhanced Wetting thiab Txheej:Kev kho, siab -lub zog nto tso cai rau lub aqueous-raws li electrode slurry kom kis tau tusyees thiab ntub cov ntawv ci kom tiav, ua rau cov txheej txheej tuab dua qub thiab tshem tawm qhov tsis xws luag.
Superior Adhesive zog:Cov pab pawg polar functional ntawm cov ntawv ci tsim muaj zog covalent thiab hydrogen bonds nrog cov polymer binders hauv slurry. Qhov no tsim ib qho kev sib raug zoo, ruaj khov interface uas tiv thaiv delamination thaum caij tsheb kauj vab thiab huab cua kub.
Txhim kho tus nqi muaj peev xwm:Los ntawm kev txo qis kev sib cuag ntawm cov ntawv ci- txheej txheej, kev kho mob corona ua kom yooj yim rau kev hloov hluav taws xob sai, ua kom muaj txiaj ntsig zoo dua thiab ua haujlwm tawm.
Extended Cycle Life:Nrog lub zog adhesion tiv thaiv cov khoom siv poob, lub roj teeb tswj nws lub peev xwm thiab kev ncaj ncees ntawm ntau pua lub voj voog.
Ua kom muaj kev lag luam Yield:Txo cov scraping thiab rework vim txheej tsis xws luag ncaj qha txo nqi ntau lawm thiab nce throughput.
Xaus
Nyob rau hauv kev sib tw heev toj roob hauv pes ntawm advanced zog cia, maximizing lub durability thiab kev cia siab ntawm txhua yam yog qhov tseem ceeb. Kev kho mob corona Advanced tsis yog ib kauj ruam uas xaiv tau lawm; nws yog ib qho tseem ceeb ntawm kev siv thev naus laus zis rau kev tsim cov roj teeb tom ntej - tiam. Los ntawm kev daws qhov kev sib tw adhesion ntawm nws cov hauv paus, nws txhawb cov tuam txhab tsim khoom kom muaj kev nyab xeeb dua, ntev dua - kav ntev, thiab siab dua - roj teeb ua haujlwm. Raws li peb thawb cov ciam teb ntawm cov khoom siv- lub xeev cov roj teeb thiab lwm yam tshiab chemistry, qhov kev thov rau kev tswj xyuas qhov tsis sib haum xeeb tsuas yog loj hlob, ua kom lub luag haujlwm ntawm tus kws kho mob corona siab dhau los ua lub hauv paus ntawm kev ua tau zoo hauv kev hloov pauv lub zog huv.