Lithium roj teeb anode compounding txujci (tshuam tib yam li cov khoom xyaw ntawm lub tshuab tag nrho)
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 kua nplaum (SBR): cov kab kua me me • lub tshuab emulsion, cov dej ntau thiab cov roj ncov qaum ncov qaum.
(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 yog txo cov kabmob ntawm cov phom tuaj thiab txhim kho cov teebmeem ntawm cov graphite thiab cov tog raj; muaj qhov muaj zog defoaming effect; thiab yooj yim catalyzes cov pab pawg khawm. Qhov tsim kom muaj zog daim ntawv cog lus.
Ethanol: weakly ncov qaum cov khoom, uas tuaj yeem txo qhov polarity ntawm lub binder tov tom qab ntxiv, txhim kho qhov sib thooj ntawm graphite thiab cov tog kua; muaj zog muaj zog defoaming; yooj yim catalyzes lub nplaum kab * rau crosslink thiab txhim kho lub zog tsevneeg (Cov nyhuv ntawm isopropanol thiab ethanol yog qhov tseem ceeb tib yam, thiab tus nqi qes zog yuav raug txiav txim siab nyob rau hauv cov khoom loj thiab ces ib qho ntxiv).
(5) Dej ntshiab (los yog dej distilled): Ib qho tshuaj ntxiv yog ntxiv rau qhov yuav tsum tau hloov qhov ntws ntawm cov slurry.
2. Ua cov cuab yeej ua tiav:
(1) Graphite:
A. Ua kom homogenize cov khoom raw thiab txhim kho kev sib luag.
B, 300 ~ 400 ° C atmospheric siab ci, tshem tawm cov roj av deg, txhim kho qhov sib haum nrog cov phom ywg dej, puag ncig ntawm lub graphite ntug (ib co ntaub ntawv khaws lub npog tshwj xeeb, tsis pub ci, .
(2) Cov dej quav: Dilute kom zoo kom zoo dua qub.
3. Ntxoov ntxaug, nplawm thiab faib:
(1) Graphite sib txawv ntawm cov tog raj daws * thiab tsis yog 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 qhov kev ncua deb ntawm cov ncov qaumteb qab zib thiab cov ntaub ntawv tsis-hnyav thiab nce lub zog lossis 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 muaj tej yam kev tso cai, tus ntsuas kub yuav tsum tsim tsa kom tsim nyog ua kom yooj yim rau lub cev, thaum ua kom zoo dua qub thiab txo cov teeb meem ntawm kev faib tawm.
(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.
(6) Lub hauv paus ntsiab lus ntawm dispersion thiab dispersion muaj feem xyuam rau cov ntsiab lus ntawm cov khoom xyaw zoo electrode.
4. Dilute. Lub slurry yog hloov mus rau ib tug haum concentration rau chaw coating.
Qeb plaub, roj teeb lithium Nco ntsoov txog cov khoom xyaw:
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 lub sij hawm ntev kom tsis txhob los nag lossis txo qis;
6. Cov ntaub ntawv uas yuav tsum tau ci yuav tsum muab ntim thiab txias ua ntej lawv tuaj yeem muab ntxiv rau kom tsis txhob muaj qhov hloov ntawm cov khoom zoo ntawm cov khoom;
7. Qhov ntev ntawm lub sijhawm sib tov yog raws li cov khoom siv hluav taws xob thiab cov khoom siv khoom; 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 nthuav tusyees, tus kav lub chaw, lwm txoj kev tuaj yeem kho.