Ua ntej, muaj pes tsawg leeg ntawm electrode:
1, qhov zoo electrode muaj pes tsawg leeg:
a, lithium cobalt oxide: zoo electrode active khoom, lithium ion qhov chaw, rau lub roj teeb los txhim kho lithium qhov chaw.
b. Conductive agent: txhim kho cov conductivity ntawm daim ntawv zoo electrode, them nyiaj hluav taws xob conduction ntawm cov khoom siv zoo, ua kom cov kua nqus ntawm cov electrode ntawm cov ntawv zoo electrode, nce cov tshuaj tiv thaiv, thiab txo cov polarization.
c. PVDF nplaum: Lithium cobaltate, conductive tus neeg saib xyuas thiab txhuas ntawv ci los yog txhuas mesh yog sib koom ua ke.
d. Cov hmoov txhuas zoo: Ua los ntawm txhuas ntawv ci lossis txhuas sawb.
2, muaj pes tsawg leeg ntawm qhov tsis zoo electrode:
a, graphite: tsis zoo electrode active khoom, uas yog lub ntsiab ntawm cov tshuaj tiv thaiv tsis zoo electrode; feem ntau muab faib ua ntuj graphite thiab dag, graphite ob pawg loj.
b. Conductive agent: txhim kho qhov conductivity ntawm daim ntawv tsis zoo electrode thiab them nyiaj hluav taws xob conduction ntawm cov khoom siv hluav taws xob tsis zoo.
Txhim kho cov tshuaj tiv thaiv qhov tob thiab kev siv. Tiv thaiv kev tsim ntawm dendrites. Lub peev xwm nqus dej ntawm cov khoom siv hluav taws xob yog siv los ua kom cov tshuaj tiv thaiv cuam tshuam thiab txo polarization. (Tuaj yeem xaiv raws li graphite particle loj faib ntxiv lossis tsis tau).
c. Additives: txo cov irreversible tshwm sim, txhim kho adhesion, nce slurry viscosity, thiab tiv thaiv slurry nag lossis daus.
d. Dej binder: Bonding graphite, conductive agent, additive thiab tooj liab ntawv ci los yog tooj liab mesh ua ke.
e, txhuas tsis zoo: ua los ntawm tooj liab ntawv ci los yog npib tsib xee sawb.
Qhov thib ob, cov khoom xyaw lithium roj teeb Lub Hom Phiaj: Cov txheej txheem batching yog sib xyaw ntau yam hauv cov slurry raws li tus qauv piv, thiab npaj rau hauv cov slurry los pab txhawb cov txheej txheem kom ntseeg tau qhov sib xws ntawm cov ncej. Cov khoom xyaw feem ntau muaj tsib txheej txheem, xws li: pretreatment, blending, wetting, dispersion thiab flocculation ntawm raw cov ntaub ntawv.
Thib peb, lub hauv paus ntsiab lus ntawm lithium roj teeb cov khoom xyaw:
(A), lub hauv paus ntsiab lus ntawm kev noj tshuaj zoo
1. Lub cev thiab tshuaj lom neeg ntawm cov khoom siv raw
(1) Lithium cobaltate: tsis yog- cov khoom polar, cov duab tsis zoo, cov kab uas hla D50 feem ntau yog 6-8 μm, cov ntsiab lus dej tsawg dua lossis sib npaug li 0.2 feem pua, feem ntau alkaline, PH tus nqi yog hais txog 10-11.
Lithium manganate: tsis yog {{0}} cov khoom polar, cov duab tsis zoo, qhov loj me D50 feem ntau yog 5-7 μm, cov ntsiab lus dej tsawg dua lossis sib npaug li 0.2 feem pua, feem ntau tsis muaj zog alkaline, PH tus nqi yog li 8.
(2) Tus neeg saib xyuas: tsis yog - cov khoom siv polar, cov saw hlau, cov ntsiab lus dej 3-6 feem pua, roj nqus tus nqi ~ 300, particle loj feem ntau yog 2-5μm; feem ntau yog carbon dub, superconducting.
Carbon dub, graphite mis nyuj, thiab lwm yam, feem ntau yog xaiv rau superconducting carbon dub thiab graphite emulsion nyob rau hauv loj - daim ntawv thov ntim; feem ntau nruab nrab.
(3) PVDF binder: tsis yog-cov khoom polar, chains, molecular hnyav li ntawm 300,000 mus rau 3,000,000; Molecular hnyav txo tom qab dej nqus, viscosity deteriorated.
(4) NMP: cov kua dej tsis muaj zog uas siv los ua kom yaj / o PVDF thiab dilute cov slurry.
