Kev paub txog cov roj teeb lithium (2)
(二), lub hauv paus ntsiab lus ntawm kev noj tshuaj tsis zoo (roughly tib txoj ntsiab cai li kev pom zoo)
1. Lub cev nqaij thiab tshuaj ntawm cov ntaub ntawv raw.
(1) Graphite: Non-polar khoom, yooj yim paug los ntawm cov khoom tsis-ncov qaum, tsis yooj yim rau disperse hauv cov khoom tsis-ncov; tsis yooj yim rau nqus dej, thiab tsis yooj yim rau disperse rau hauv dej. Cov kab paug kua tom qab, tom qab muab faib rau hauv dej, nws yooj yim dua rau cov agglomerate. Lub dav hlau D5 feem ntau yog txog 20 μm. Cov khoom muaj ntau yam zoo nkauj thiab tsis sib thooj, thiab tsuas yog khov kho, flaky, fibrous, thiab cov zoo li.
(2) Cov Plab Ntoo Cov Dej (SBR): lub tshuab me me uas muaj cov tshuab xaim hluav taws xob (emulsion) uas yog cov dej nyob hauv cov dej thiab cov roj ncov qaum ncov (polar solvents).
(3) Cov Tiv Thaiv Tus Dag Ntxias (CMC): Ib qho tshuaj tiv thaiv polymer uas yog yooj yim soluble hauv cov dej thiab cov kuab tshuaj ncov qaum.
(4) Isopropanol: ib qho khoom ua tsis muaj zog, uas ua rau kom muaj lub cev khoob ntawm cov tog raj daws thiab txhim kho cov teeb meem ntawm lub graphite thiab lub khob; nws muaj qhov muaj zog defoaming effect; Txoj kev sib tshuam ntawm txoj kab sib txuas tau pab txoj kev tso dag lub zog.
Ethanol: ib yam khoom uas tsis muaj zog, uas ua rau kom muaj qhov sib thooj ntawm cov tog raj daws thiab ua rau cov kev sib tw ntawm cov graphite thiab cov tog raj daws; muaj qhov muaj zog defoaming effect; yooj yim catalyzes lub crosslinking ntawm tus binder thiab pab txoj kev siab ntsws. Lub zog ntawm cov pob tawb (cov nyhuv ntawm isopropanol thiab ethanol yog qhov zoo tib yam, thiab qhov raug nqi yuav xam tau tias yog nyob rau hauv cov khoom loj thiab ces ib qho ntxiv).
(5) Dej ntshiab (los yog dej distilled): Ib qho tshuaj ntxiv yog muab los ntxiv rau qhov hloov lub pob fluidity ntawm slurry.
2. Ua cov cuab yeej ua tiav:
(1) Graphite: A, tov rau homogenize cov ntaub ntawv raw thiab txhim kho sib xws. B, 300 ~ 400 ° C atmospheric siab ci, tshem tawm cov roj oily tshuaj, txhim kho cov kua nplaum los ntawm cov dej-based adhesives, puag ncig ntawm lub graphite ntug (ib co ntaub ntawv kom muaj cov yam ntxwv nto, tsis txhob pub ci, ).
(2) Cov Khaub Ncaws Aqueous: Dilute zoo kom txhim kho dispersibility.
3. Ntxoov ntxaug, nplawm thiab faib:
(1) Kev daws teeb meem thiab khooj nyiab muaj cov qauv sib txawv thiab tsis yooj yim dispersed.
(2) Lub graphite tej zaum yuav pib wetted nrog ib qho dej cawv cawv thiab ces muab sib xyaw nrog cov tog raj daws.
(3) Cov tshuaj nplaum (stirring concentration) yuav tsum raug txo kom zoo dua qub kom zoo dua qub.
(4) Cov txheej txheem kev sib tw yog txo cov kev sib txawv ntawm cov ncov qaumteb qab zib thiab cov khoom tsis-ncov qaum thiab nce lub zog lossis lub zog qhov hluav taws xob. Yog li ntawd, rau cov tshuaj tiv thaiv kab mob, lub zuag qhia tag nrho kub thaum pib. Yog hais tias tus mob tso cai, tus kub yuav tsum tau tsim tsa kom tsim nyog ua kom yooj yim rau cov cua sov, thaum ua kom cov dej fluid thiab txo cov teeb meem ntawm cov dispersion.
(5) Cov txheej txheem sib xyaw, xws li ntxiv cov txheej txheem nqus dej, tshem cov roj thiab txhawb nqa cov kua adsorption uas muaj kua, thiab cov nyhuv zoo dua.
4. Dilute. Lub slurry yog hloov mus rau ib tug haum concentration rau chaw coating.
Plaub, cov ntawv cim cia:
1. Tiv thaiv kev sib tov ntawm lwm cov impurities;
2. Tiv thaiv slurry splashing;
3. Lub ntsiab lus ntawm cov slurry (cov ntsiab lus) yuav tsum maj mam kho ntawm siab mus qis kom tsis txhob ntxiv teeb meem;
4. Ua zoo saib kom scraping thiab scraping rau hauv qab thaum lub sij hawm sib tov txheej txheem los xyuas meej uniform dispersion;
5, lub slurry yuav tsum tsis txhob tseg rau ib lub sij hawm ntev kom tsis txhob los nag los yog txo kev ywj pheej;
6. Cov ntaub ntawv uas yuav tsum tau ci yuav tsum muab ntim thiab txias ua ntej lawv tuaj yeem muab ntxiv kom tsis txhob muaj kev hloov hauv cov khoom ntawm cov khoom.
7. Qhov ntev ntawm lub sijhawm sib tov yog qhov raws li cov cuab yeej ua tau zoo thiab cov khoom siv ntxiv; kev siv cov nplaum nplaum nplaum yog hloov los ntawm kev nyuaj ntawm slurry dispersion. Yog tias qhov hloov tsis tuaj yeem hloov tsis tau, qhov kev sib hloov ntawm kev hloov yuav raug kho ntawm kev qeeb qeeb kom tsis txhob muaj kev puas tsuaj rau cov khoom siv;
8. Lub slurry yog siev ua ntej tso tawm mus tshem tawm cov xim loj loj kom tiv thaiv tau tawg thaum lub caij;
9. Ntxiv dag zog rau kev cob qhia cov khoom xyaw kom paub tseeb tias lawv muaj kev txawj ntse kom tsis txhob muaj kev puas tsuaj loj;
10, tus yuam sij rau cov khoom xyaw yog los ua kom sib-zog, tus kav lub chaw, lwm txoj kev yuav hloov kho.