Tus qauv siv rau ib qho kev ua lag luam rau cov roj ntsha lithium-ion , uas yog los tsim cov lag luam sai sai rau cov roj carboxymethylcellulose siv hauv roj teeb pastes.
CMC ( Carboxymethylcellulose sodium), dawb los yog cov milky dawb fibrous hmoov los yog granule, dispersed hauv dej rau hauv ntshiab gel. Lithium battery npaj cov txheej txheem, feem ntau xaiv tau raws li cov khoom siv ntawm cov nplaum, Tus neeg muag khoom tshem tawm, cov twj, cov khoom lag luam lithium tau paub zoo tias yog ib yam khoom tseem ceeb.
Feem ntau ntawm cov tshuaj electrode paste formulation ntawm lithium kev lag luam yog raws li nram no: Toner, conductive agent, CMC, styrene-butadiene roj hmab (SBR) thiab dej deionized. Toners thiab cov neeg ua hauj lwm siv hluav taws xob tsis yooj yim rau dissolve hauv dej deionized thiab yog li dispersed by CMC. CMC plays lub luag haujlwm tseem ceeb hauv kev faib cov toner thiab cov neeg ua hauj lwm.
CMC dissolution yog ncaj qha ntsig txog cov teebmeem ntawm qhov kev tua slurry. Tom qab ntau tus neeg mob thiab cov kev ua tau pom tias, lub slurry ntawm cov phau ntawv tsis zoo rau CMC thiab SBR system, cov teeb meem feem ntau cuam tshuam rau CMC dispersion .
Rau lub hom phiaj ntawm kev ua tiav qhov zoo tshaj qhov xaus ntawm qhov xaus, ntawm no muab cov txheej txheem rau sai sai dissolving sodium carboxymethylcellulose uas yog npaj los txo cov hygroscopicity ntawm sodium carboxymethyl cellulose los ntawm kev sib ntxiv ntawm N-methylpyrrolidone, ua kom luv luv qhov kev ntxhov siab thiab txhim kho cov dispersion effect, lub luag haujlwm ntawm nws tus neeg saib xyuas ncua kev sib tw , cov kauj ruam yog raws li nram no:
A. Muab sodium carboxy methyl cellulose thiab N-methylpyrrolidone hauv qhov loj ratio ntawm 1: 2 mus rau 4 thiab do zoo kom tau sib xyaw sodium carboxymethyl cellulose kua;
B. Ntxiv cov dej deionized rau lub taub dej ntawm lub tov khoom thiab maj mam ncuav lub sodium carboxymethyl cellulose tshuaj tau npaj rau hauv cov kauj ruam A thaum cov nplaum dej deionized.
C. nplawm hauv qhov nqus 20 ~ 40Hz rau 5 ~ 10min;
D. Ntxuav cov paddle agitated thiab cov tshuaj sodium oxygen carboxymethyl cellulose adhered ntawm cov phab ntsa thiab tom qab ntawd ua rau 30 min mus rau 60 min hauv nqus 20 mus rau 40 Hz, kom tau txais kev sib tov txaus ntsev sodium carboxymethyl cellulose.