Txawm hais tias siv cov ntawv txhuas txhuas ua lub roj teeb tam sim no muaj ntau qhov zoo, tseem muaj ntau yam teeb meem uas yuav tsum tau hais thaum lub sijhawm thov. Ua ntej, qee qhov rigidity ntawm aluminium ntawv ci ua rau thaj tsam txwv thaum sib cuag nrog cov khoom siv cathode, uas ua rau muaj kev cuam tshuam sab hauv ntawm cov ntawv cathode; Thib ob, lub zog sib txuas ntawm cov ntawv txhuas txhuas rau cov ntawv khi thiab cov khoom siv nquag raug txwv, thiab cov khoom siv hluav taws xob hloov pauv thaum lub voj voog thiab tawm. Cov khoom yog xoob ua ke thiab yooj yim poob tawm, uas ua rau kom ceev ceev ntawm lub roj teeb muaj peev xwm thiab lub neej voj voog; Thaum kawg, cov khoom oxidative decomposition ntawm cov electrolyte ua rau cov tshuaj tiv thaiv electrochemical nyob rau saum npoo ntawm aluminium ntawv ci, ua rau corrosion ntawm aluminium ntawv ci. Yuav kom kov yeej cov teeb meem no, aluminium ntawv ci yuav tsum tau hloov kho.
Deg carbon txheej yog lub ntsiab hloov kho txoj kev, uas tuaj yeem txhim kho kev ua haujlwm sab hauv ntawm aluminium ntawv ci. Cov kev hloov kho tseem ceeb ntawm cov ntawv ci txhuas muaj xws li kev kho mob saum npoo av (xws li tshuaj etching, electrochemical etching, DC anodization, corona kev kho mob), txheej txheej conductive (xws li deg carbon txheej, graphene txheej, carbon nanotube txheej, txheej txheej), 3D ntxeem tau qauv ( xws li cov qauv ua npuas ncauj, qauv nanoribbon, qauv nanocone, fiber ntau braiding qauv) thiab kev kho kom zoo sib xws. Cov txheej txheem no ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm aluminium ntawv ci thiab txhim kho kev sib txuas ntawm cov khoom siv electrode.
Cov ntaub ntawv aluminium tshiab ua kom pom qhov ua tau zoo tshaj plaws ntawm kev nyab xeeb, lub zog ceev thiab lub voj voog lub neej hauv lub roj teeb. Composite aluminium foil yog hais txog ib qho txhuas-plated composite zaj duab xis npaj los ntawm cov txheej txheem evaporation thiab siv polyethylene terephthalate (PET) thiab lwm yam ntaub ntawv los ua cov khoom siv hauv paus. Nws qhov zoo muaj xws li: 1) Txhim kho kev nyab xeeb: Cov ntawv txhuas sib xyaw ua ke qhia cov txheej txheem organic insulating hauv nruab nrab ntawm cov khoom siv tam sim no. Cov txheej no tuaj yeem muab kev tiv thaiv tsis kawg thaum thermal runaway tshwm sim, thiab tsis yog-combustible, yog li txo qhov kev pheej hmoo ntawm roj teeb hluav taws xob thiab tawg, txo qhov kev pheej hmoo ntawm roj teeb thiab tawg. Txhawm rau txhim kho kev nyab xeeb ntawm lub roj teeb; 2) Txhim kho lub zog ceev: Vim tias cov khoom siv PET yog sib dua, tag nrho cov khoom ntawm PET aluminium ntawv ci yog me dua (sib npaug rau hloov qhov nruab nrab ntawm cov ntawv ci hlau nrog ib txheej ntawm PET), uas txo qhov hnyav ntawm lub roj teeb thiab txhim kho lub roj teeb lub zog ceev. Zog Ceev. Raws li Xinchen Lithium roj teeb cov ntaub ntawv, cov ntawv txhuas sib xyaw yog 50% -80% sib zog dua li cov tsoos dov txhuas ntawv ci tam sim no uas tsis tau nce qhov tuab tag nrho. Ntxiv mus, cov ntawv txhuas sib xyaw ua ke tuaj yeem ua nyias, thiab cov roj teeb lithium kawg yog qhov me me. , lub zog ceev tuaj yeem nce 5% -10%; 3) Txhim kho lub neej voj voog: Raws li Gaogong Lithium Roj teeb, cov ntawv txhuas sib xyaw siv cov ntaub ntawv polymer los ua cov txheej txheem txheej txheej ntawm daim txhuam cev, uas tuaj yeem nqus cov khoom siv hauv cov txheej txheem ntawm tus ncej uas tsim thaum lub sijhawm them thiab tawm. Expansion-contraction stress tshwm sim los ntawm lithium ion intercalation thiab extraction. Qhov no ua tau zoo tswj qhov kev ncaj ncees mus ntev ntawm tus ncej ncej interface, nce lub neej voj voog los ntawm 5%.
