Cov roj teeb ua haujlwm siab:Lithium-ion roj teebyog tsim los ntawm plaub qhov tseem ceeb: cov khoom zoo electrode, cov khoom tsis zoo electrode, cais, thiab electrolyte.Ntawm lawv, lub separator yog ib qho tseem ceeb sab hauv cov khoom hauvlithium-ion roj teeb.Txawm hais tias nws tsis ncaj qha koom nrog cov tshuaj tiv thaiv electrochemical, nws ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm roj teeb.Nws tsis tsuas yog cuam tshuam rau lub peev xwm, lub voj voog kev ua haujlwm thiab kev them nqi thiab tso tawm qhov ceev tam sim no ntawm lub roj teeb, tab sis kuj tseem cuam tshuam txog kev nyab xeeb thiab lub neej ntawm lub roj teeb.roj teeb.Lub separator tswj cov roj teeb kom zoo thiab kev ua haujlwm zoo los ntawm kev muab cov ion conduction raws, tiv thaiv electrolyte sib xyaw, thiab muab kev txhawb nqa tshuab.Cov ion conductivity ntawm lub separator ncaj qha cuam tshuam rau tus nqi thiab tso tawm ceev thiab kev ua haujlwm ntawm lub roj teeb.Cov ion conductivity zoo dua tuaj yeem txhim kho lub zog ceev ntawm lub roj teeb.Tsis tas li ntawd, qhov kev sib cais ntawm electrolyte ntawm lub separator txiav txim siab txog kev nyab xeeb ntawm lub roj teeb.Kev sib cais zoo ntawm electrolyte ntawm qhov zoo thiab qhov tsis zoo electrodes tuaj yeem tiv thaiv cov teeb meem kev nyab xeeb xws li luv luv Circuit Court thiab overheating.Lub separator tseem yuav tsum muaj lub zog zoo txhua yam thiab hloov tau yooj yim los tiv thaiv kev nthuav dav thiab kev cog lus ntawm lub roj teeb thiab tiv thaiv kev puas tsuaj rau cov khoom siv hluav taws xob thiab cov khoom siv luv luv.Tsis tas li ntawd, lub separator tseem yuav tsum tau tswj cov txheej txheem thiab kev ua haujlwm ruaj khov thaum lub sijhawmroj teeb lub neejkom ntseeg tau tias lub sijhawm ua haujlwm ruaj khov ntawm lub roj teeb.Txawm hais tias lub separator tsis ncaj qha koom nrog cov tshuaj tiv thaiv electrochemical ntawm lub roj teeb, nws muaj kev cuam tshuam tseem ceeb ntawm cov khoom tseem ceeb xws li roj teeb muaj peev xwm, lub voj voog kev ua haujlwm, kev them nqi thiab kev tso tawm nrawm, kev nyab xeeb thiab kev ua neej nyob. .Yog li, kev txhim kho thiab kev ua kom zoo ntawm cov khoom sib cais yog qhov tseem ceeb rau kev txhim kho thiab siv cov roj teeb lithium-ion.
1. Lub luag haujlwm tseem ceeb ntawm cov khoom sib cais hauvlithium-ion roj teeb
Separators ua lub luag haujlwm tseem ceeb hauv cov roj teeb lithium-ion.Nws tsis yog tsuas yog lub cev tiv thaiv uas cais qhov zoo thiab tsis zoo electrodes, tab sis kuj muaj cov haujlwm tseem ceeb hauv qab no: 1.Ion kis tau tus mob: Lub separator yuav tsum muaj cov ion kis tau tus mob zoo thiab muaj peev xwm tso cai rau lithium ions kis tau dawb ntawm qhov zoo thiab tsis zoo electrodes.Nyob rau tib lub sijhawm, lub separator yuav tsum tau ua haujlwm zoo los tiv thaiv kev sib kis ntawm cov hluav taws xob tiv thaiv kom tsis txhob luv luv Circuit Court thiab nws tus kheej tawm.2.Kev saib xyuas ntawm electrolyte: Lub separator yuav tsum muaj kev tiv thaiv zoo rau cov kuab tshuaj nkag mus, uas tuaj yeem ua kom muaj kev sib faib ntawm cov electrolyte ntawm qhov zoo thiab qhov tsis zoo electrodes thiab tiv thaiv kev poob ntawm electrolyte thiab concentration hloov.3.Mechanical zog: Lub separator yuav tsum muaj cov neeg kho tshuab muaj zog txaus los tiv thaiv kev ntxhov siab xws li compression, expansion thiab vibration ntawm lub roj teeb kom ntseeg tau tias kev ruaj ntseg thiab kev nyab xeeb ntawm lub roj teeb.4.Thermal stability: Lub separator yuav tsum muaj qhov zoo thermal stability kom muaj kev ruaj ntseg zoo nyob rau hauv qhov kub thiab txias thiab tiv thaiv thermal runaway thiab thermal decomposition.5.nplaim retardancy: Lub separator yuav tsum muaj cov nplaim hluav taws zoo, uas tuaj yeem tiv thaiv lub roj teeb ntawm hluav taws lossis tawg hauv qhov xwm txheej txawv txav.Ua kom ua tau raws li cov kev cai saum toj no, cov khoom sib cais feem ntau yog ua los ntawm cov khoom siv polymer, xws li polypropylene (PP), polyethylene. (PE), thiab lwm yam Tsis tas li ntawd, qhov tsis xws li cov thickness, porosity, thiab pore loj ntawm lub separator kuj yuav cuam tshuam rau kev ua haujlwm ntawm lub roj teeb.Yog li ntawd, nyob rau hauv cov txheej txheem ntawm kev npaj ntawm lithium-ion roj teeb, nws yog ib qho tseem ceeb heev uas yuav tau xaiv cov khoom sib cais tsim nyog thiab optimize tus qauv tsim ntawm lub separator.
2. Lub luag haujlwm tseem ceeb ntawm cov khoom sib cais hauvlithium roj teeb:
Hauv cov roj teeb lithium-ion, cov khoom sib cais ua lub luag haujlwm tseem ceeb thiab muaj cov haujlwm tseem ceeb hauv qab no: 1.Ion conduction: Lub separator tso cai rau lithium ions thauj mus los ntawm qhov zoo thiab tsis zoo electrodes.Lub separator feem ntau muaj ionic conductivity siab, uas tuaj yeem txhawb kev nrawm thiab txawm tias ntws ntawm lithium ions hauv lub roj teeb thiab ua tiav kev them nyiaj thiab tawm ntawm lub roj teeb.2.Roj teeb kev nyab xeeb: Lub tshuab cais tuaj yeem tiv thaiv kev sib cuag ncaj qha thiab luv luv ntawm qhov zoo thiab qhov tsis zoo electrodes, tsis txhob overcurrent thiab overheating hauv lub roj teeb, thiab muab roj teeb kev nyab xeeb.3.Electrolyte cais tawm: Lub separator tiv thaiv cov pa roj, impurities thiab lwm yam khoom hauv electrolyte hauv lub roj teeb los ntawm kev sib xyaw ntawm qhov zoo thiab qhov tsis zoo electrodes, tsis txhob muaj cov tshuaj tsis tsim nyog thiab kev poob, thiab tswj kev ruaj ntseg thiab lub neej voj voog ntawm lub roj teeb.4.Kev txhawb nqa tshuab: Lub tshuab cais ua lub luag haujlwm ntawm kev txhawb nqa tshuab hauv lub roj teeb.Nws tuaj yeem txhim kho txoj haujlwm ntawm qhov zoo thiab tsis zoo electrodes thiab lwm yam khoom siv roj teeb.Nws kuj muaj qee qhov kev hloov pauv tau yooj yim thiab nthuav dav kom haum rau kev nthuav dav thiab kev cog lus ntawm lub roj teeb.Separators ua lub luag haujlwm tseem ceeb hauv ion conduction, roj teeb kev nyab xeeb, kev sib cais electrolyte thiab kev txhawb nqa txhua yam hauv lithium-ion roj teeb.Nws tuaj yeem ua kom ruaj khov thiab ua haujlwm ntawm lub roj teeb.
3. Hom lithium-ion roj teeb cais
Muaj ntau ntau hom lithium-ion roj teeb cais, cov uas muaj xws li hauv qab no: 1.Polypropylene (PP) separator: Qhov no yog tam sim no feem ntau siv cov khoom sib cais.Polypropylene separators muaj cov tshuaj tiv thaiv zoo heev, zoo thermal stability thiab txhua yam muaj zog, thaum muaj cov ion selectivity thiab conductive zog.2.Polyimide (PI) separator: Polyimide separator muaj thermal stability thiab tshuaj stability, thiab tuaj yeem tswj kev ua haujlwm ruaj khov hauv qhov kub thiab txias.Vim nws cov hluav taws xob tsis zoo, cov khoom sib cais polyimide feem ntau yog siv rau hauv cov roj teeb uas muaj zog ceev thiab siab zog.3.Polyethylene (PE) separator: Polyethylene separator muaj ion conductivity siab thiab zoo mechanical zog, thiab feem ntau yog siv nyob rau hauv tej hom ntawm lithium-ion roj teeb, xws li supercapacitors thiab lithium-sulfur batteries.4.Composite ceramic diaphragm: Composite ceramic diaphragm yog ua los ntawm ceramic fiber reinforced polymer substrate.Nws muaj lub zog txhua yam thiab kub tsis kam thiab tuaj yeem tiv taus qhov kub thiab txias thiab lub cev puas tsuaj.5.Nanopore separator: Nanopore separator siv cov ion conductivity zoo heev ntawm cov qauv nanopore, thaum ntsib cov neeg kho tshuab muaj zog thiab tshuaj lom neeg ruaj khov.Nws yuav tsum tau siv rau hauv cov roj teeb lithium-ion nrog lub zog siab thiab lub neej ntev yuav tsum tau ua.Cov khoom sib cais ntawm cov khoom sib txawv thiab cov qauv tuaj yeem xaiv thiab ua kom zoo raws li cov qauv roj teeb sib txawv thiab kev ua haujlwm tau zoo.
4. Kev ua tau zoo ntawm lithium-ion roj teeb cais
Lithium-ion roj teeb cais yog ib qho tseem ceeb ntawm cov kev ua haujlwm hauv qab no: 1.High electrolyte conductivity: Lub separator yuav tsum muaj siab electrolyte conductivity los txhawb ion conduction ntawm qhov zoo thiab tsis zoo electrodes kom ua tau zoo them thiab tawm ntawm lub roj teeb.2.Kev xaiv ion zoo heev: Cov khoom sib cais yuav tsum muaj kev xaiv zoo ion, cia tsuas yog kis tau tus mob lithium ions thiab tiv thaiv kev nkag mus lossis cov tshuaj tiv thaiv ntawm lwm yam khoom hauv lub roj teeb.3.Zoo thermal stability: Lub separator yuav tsum muaj thermal stability zoo thiab muaj peev xwm tswj tau cov qauv kev ruaj ntseg nyob rau hauv huab cua txias xws li kub los yog overcharging los tiv thaiv thermal runaway los yog electrolyte evaporation thiab lwm yam teeb meem.4.Cov khoom siv zoo heev thiab kev ua kom yooj yim: Cov khoom sib cais yuav tsum muaj lub zog txhua yam thiab hloov tau yooj yim los tiv thaiv cov teeb meem xws li ntug luv circuits lossis kev puas tsuaj sab hauv, thiab hloov mus rau kev nthuav dav thiab kev cog lus ntawm lub roj teeb.5.Cov tshuaj tiv thaiv zoo: Lub separator yuav tsum muaj cov tshuaj tiv thaiv zoo thiab muaj peev xwm tiv taus corrosion los yog paug ntawm cov khoom sib cais los ntawm electrolytes, gases thiab impurities hauv lub roj teeb.6.Tsawg tsis kam thiab tsis tshua muaj permeability: Lub separator yuav tsum muaj qhov tsis kam tiv thaiv thiab tsis tshua muaj permeability los txo qhov tsis kam thiab electrolyte poob hauv lub roj teeb.Qhov kev ua tau zoo ntawm lithium-ion roj teeb cais yog siab electrolyte conductivity, zoo heev ion selectivity, thermal stability, zoo heev mechanical. lub zog thiab yoog raws, tshuaj lom neeg zoo, tsis muaj kev tiv thaiv thiab tsis muaj permeability.Cov kev ua tau zoo no ua kom muaj kev nyab xeeb ntawm roj teeb, lub neej voj voog thiab lub zog ceev.
Post lub sij hawm: Sep-15-2023