Separator yog dab tsi?
cais
Lub separator yog ib qho tseem ceeb ntawm lithium -ion roj teeb. Nws yog microporous daim nyias nyias siv los cais qhov zoo thiab qhov tsis zoo electrodes, thiab yog cov khoom siv polymer ua haujlwm nrog cov qauv nanoscale microporous, raws li qhia hauv daim duab 7-9. Qhov kev ua tau zoo ntawm lub tshuab cais txiav txim siab lub roj teeb lub interface qauv, kev tiv thaiv sab hauv, thiab lwm yam ntxwv, cuam tshuam ncaj qha rau nws lub peev xwm, lub neej voj voog, thiab kev nyab xeeb. Lub siab -kev ua tau zoo cais ua lub luag haujlwm tseem ceeb hauv kev txhim kho tag nrho kev ua haujlwm ntawm lub roj teeb. Nws lub luag haujlwm tseem ceeb yog txhawm rau tiv thaiv luv luv los ntawm kev sib cuag ntawm electrode thaum tso cov electrolyte ions hla dhau. Rau lithium- roj teeb ion, txij li cov electrolyte yog cov organic hnyav, cov khoom sib cais yuav tsum tau tiv thaiv cov kuab tshuaj organic. Feem ntau, siab -lub zog, nyias-film polyolefin porous membranes yog siv.
Qhov kev ua tau zoo ntawm lithium-ion roj teeb cais txiav txim siab lub roj teeb lub interface qauv thiab kev tiv thaiv sab hauv, cuam tshuam ncaj qha rau nws lub peev xwm, lub neej voj voog, thiab kev nyab xeeb. Cov kev xav tau rau cov lithium -ion roj teeb cais yog:
1) Rwb thaiv tsev kev ua tau zoo: Lub separator yog ib qho hluav taws xob conductive insulator, kom ntseeg tau tias muaj kev sib cais ntawm cov electrodes zoo thiab tsis zoo.
2) High ionic conductivity: Nws yuav tsum txo qis tsis kam mus rau kev txav ntawm electrolyte ions, muaj qee qhov pore loj thiab porosity kom ntseeg tau tias tsis muaj zog thiab siab ionic conductivity, tso cai rau lithium zoo - ion permeability.
3) Chemical stability thiab electrochemical inertness: Nws yuav tsum muaj kev ruaj khov txaus tiv thaiv cov electrolyte, muaj peev xwm impurities, electrode reactants, thiab electrode tshuaj tiv thaiv cov khoom, tiv thaiv kev tawg lossis degradation. Txij li cov kuab tshuaj electrolyte yog ib qho muaj zog polar organic compound, lub separator yuav tsum tiv taus electrolyte corrosion thiab muaj cov tshuaj txaus thiab electrochemical stability.
4) Tsawg me me los ntawm cov electrolyte: Nws yuav tsum muaj cov dej ntub dej zoo rau cov electrolyte thiab cov kua dej txaus thiab muaj peev xwm khaws cov dej noo.
5) Lub zog txhua yam yuav tsum tau ua kom tsis txhob tawg thiab deformation thaum ua. Cov khoom tsim nyog txaus, suav nrog lub zog puncture thiab tensile lub zog, yog qhov tseem ceeb, thaum txo cov thickness.
6) Dimensional stability yog qhov tseem ceeb. Qhov loj me me hloov pauv hauv qab lub melting point yog tsim nyog los tiv thaiv luv luv Circuit Court ntawm qhov zoo thiab tsis zoo electrodes. Zoo spatial stability thiab flatness, nrog rau siab uniformity nyob rau hauv thickness thiab pore loj, kuj tseem ceeb.
7) Zoo thermal stability thiab tsis siv neeg kaw kev tiv thaiv yog qhov tseem ceeb. Cov roj teeb fais fab tso qhov xav tau ntau dua ntawm cov khoom sib cais, feem ntau yog siv cov khoom sib xyaw ua ke.
8) Tsawg thermal shrinkage yuav tsum muaj txiaj ntsig zoo los tiv thaiv kev tsiv teb tsaws ntawm cov khoom, colloids, lossis lwm yam tshuaj soluble ntawm qhov zoo thiab tsis zoo electrodes. Txwv tsis pub, luv Circuit Court tuaj yeem tshwm sim, ua rau lub roj teeb thermal runaway.
Sib txawv lithium-Ion roj teeb tshuab thiab cov ntawv thov muaj qhov sib txawv rau cov khoom sib cais.
