Ultrasonic Txau Txheej Tshuab Rau Roj Teeb Electrodes

Cov khoom siv roj teeb electrode yog dab tsi?

Roj teeb electrode txheej cov ntaub ntawv xa mus rau cov khoom siv ua haujlwm coated rau saum npoo ntawm lub roj teeb tam sim no cov khoom siv (zoo electrode aluminium foil, tsis zoo electrode tooj liab ntawv ci), tsim cov core electrochemical active cheeb tsam ntawm lub roj teeb. Lawv feem ntau muaj nyob rau hauv daim ntawv slurry lossis kev daws teeb meem thiab ncaj qha txiav txim siab cov cim tseem ceeb xws li roj teeb muaj peev xwm, lub neej voj voog, thiab kev ua haujlwm ntawm tus nqi.

1. Core Classification thiab Composition
Positive/negative Electrode Active Coating Materials: Cov khoom siv txheej txheej tseem ceeb tshaj plaws, tsim lub cev tseem ceeb ntawm cov tshuaj tiv thaiv electrochemical thaum lub roj teeb them thiab tawm.

Common Positive Electrode Materials: Cov khoom siv xws li cov ntaub ntawv ternary (NCM), lithium hlau phosphate (LFP), thiab lithium cobalt oxide (LCO), sib xyaw nrog cov khoom siv hluav taws xob (xws li carbon dub, CNT), binders (xws li PVDF), thiab cov kuab tshuaj (xws li NMP) los tsim cov slurry.

Cov Khoom Siv Hluav Taws Xob Tsis Zoo: Cov ntaub ntawv nquag xws li graphite, silicon{0}} cov ntaub ntawv raws li cov khoom siv, thiab cov roj carbon tawv / cov pa roj carbon monoxide, ua ke nrog cov khoom siv hluav taws xob, cov hlua khi (xws li SBR), cov thickeners (xws li CMC), thiab cov dej deionized los tsim cov dej slurry.

2. Qhov tseem ceeb ntawm kev ua tau zoo

Tsim nyog viscosity (feem ntau 10-100 cP) thiab dispersion stability yuav tsum tau tiv thaiv agglomeration los yog sedimentation thaum txau.

Cov ntsiab lus ntawm cov ntaub ntawv nquag thiab qhov loj me yuav tsum raug tswj xyuas kom ntseeg tau tias cov khoom siv hluav taws xob thiab cov txheej txheem sib xws ntawm txheej.

 

Muaj zog adhesion rau cov khoom siv tam sim no, nws yuav tsum tsis yooj yim tev tawm tom qab ziab thiab kho, thaum tseem muaj qee qhov kev hloov pauv hloov mus rau cov txheej txheem electrode dov.

 

Yuav ua li cas yog ultrasonic atomization txau siv rau roj teeb electrode txheej cov ntaub ntawv?

Thaum ultrasonic atomization spraying yog siv rau roj teeb electrode txheej cov ntaub ntawv, nws yuav tsum tau peb kauj ruam tseem ceeb: thawj cov khoom adaptation, intermediate parameterized spraying, thiab zaum kawg curing kho. Nws yog tsim rau ntau yam electrode txheej cov ntaub ntawv, nrog rau qhov zoo thiab tsis zoo electrode active coatings thiab deg hloov txheej txheej. Cov txheej txheem tshwj xeeb thiab cov ntsiab lus tseem ceeb yog raws li hauv qab no: Kev Npaj Ua Ntej: Cov Khoom Siv Npaj rau Atomization Roj Teeb Electrode txheej cov ntaub ntawv feem ntau yog cov slurries uas muaj cov khoom sib xyaw ua haujlwm, cov khoom siv hluav taws xob, thiab cov binders, los yog cov tshuaj catalyst, cov khoom electrolyte slurries, thiab lwm yam., uas yuav tsum tau kho rau lub xeev haum rau ultrasonic atomization. Ua ntej, kho cov viscosity thiab nto nro. Lub slurry viscosity feem ntau yuav tsum tau kho kom qis dua 30 cP. Yog tias tsim nyog, ntxiv cov kuab tshuaj uas tsim nyog lossis surfactants kom tsis txhob muaj viscosity ntau dhau los cuam tshuam rau atomization lossis viscosity tsawg dhau ua rau cov dej ntws tawm. Thib ob, xyuas kom meej qhov sib txawv ntawm qhov sib txawv. Rau cov slurries uas muaj nano- loj active hais los yog catalyst hais, ultrasonic dispersion pretreatment thiab ntxiv cov dispersants tsim nyog yuav tsum tau tiv thaiv particle agglomeration thiab sedimentation, yog li tsis txhob cuam tshuam rau txheej txheej. Thib peb, ua kom zoo dua qhov hnyav piv los ntawm kev xaiv cov kuab tshuaj ua ke nrog cov nqi evaporation tsim nyog kom sib npaug ntawm qhov ziab nrawm ntawm cov tee dej thaum lub davhlau. Qhov no tiv thaiv kev ziab ntxov ntxov ntawm cov tee dej, uas ua rau "tsau qhuav," thiab tseem ua kom muaj txiaj ntsig zoo thiab tsim cov yeeb yaj kiab ntawm cov khoom siv tam sim no.

Core Spraying: Parametric Precision Deposition. Cov kauj ruam no suav nrog kev kho cov cuab yeej tsis zoo rau atomize thiab tso cov khoom siv txheej txheem rau cov khoom siv tam sim no, hloov mus rau cov txheej txheem sib txawv electrode:
Cov Khoom Siv Atomization thiab Thauj: Lub ultrasonic nozzles ntawm cov cuab yeej siv siab - zaus vibrations ntawm 20kHz - 120kHz rau "tua" cov khoom txheej rau hauv cov tee dej ntawm 10-50 micrometers. Nyob rau tib lub sijhawm, kev siv cov pa roj tsawg tsawg - cov pa roj carbon monoxide tsis tsuas yog coj cov tee dej los tsim cov atomized cone ruaj khov, tiv thaiv cov tee dej nyob ze ntawm lub nozzle, tab sis kuj pab cov kuab tshuaj evaporation, zam cov khoom txaws cov teeb meem cuam tshuam nrog cov tshuaj tua kab mob siab.

 

Precise Deposition Control: Los ntawm kev kho cov tshuaj tsuag kom haum rau cov txheej txheem sib txawv, xws li kho cov kua dej thiab lub taub hau txav ceev, kev thauj khoom ntawm cov khoom siv tam sim no tuaj yeem tswj tau; kho qhov kev ncua deb ntawm lub nozzle thiab cov khoom siv tam sim no tiv thaiv cov dej agglomeration lossis ziab ntxov ntxov, kom ntseeg tau tias muaj txiaj ntsig zoo. Piv txwv li, hauv cathode catalyst txau, submicron-theem ultrathin txheej tuaj yeem npaj tau meej; nyob rau hauv cov khoom-lub xeev roj teeb electrode txau, kub-sensitive khoom electrolyte slurry films tuaj yeem tsim los ntawm qis- cov txheej txheem kub. Tsis tas li ntawd, cov cuab yeej muaj peev xwm tswj tau lub nozzle trajectory ntawm peb -axis zawv zawg platform kom ua tiav nanometer- qib precision deg hloov txheej txheej txau.

 

Ncej -Kev Ua Haujlwm: Kev kho thiab tsim kom muaj kev ua tau zoo. Cov coated electrodes yuav tsum tau ziab thiab ua haujlwm tom ntej kom ruaj khov txheej adhesion thiab kev ua haujlwm zoo. Cov txheej txheem ziab kom qhuav yuav tsum tau tswj kom nruj ntawm qhov kub thiab txias thiab lub sijhawm kom tsis txhob tawg ntawm cov khoom siv electrode thiab kev hloov pauv hauv kev ua haujlwm ntawm cov khoom siv los ntawm qhov kub thiab txias los yog ziab sai. Rau qee cov electrodes, kev sib txuas nruab nrab yog ua tom qab ziab kom ntxiv cov electrode ceev, thaum lub zog compaction yuav tsum tau tswj kom tsis txhob muaj kev puas tsuaj rau cov txheej txheem txheej. Rau cov khoom siv hluav taws xob- lub xeev cov roj teeb hluav taws xob, qhov qis-kub tom qab- cov txheej txheem kev kho mob kuj tseem tuaj yeem zam qhov decomposition ntawm cov khoom electrolyte tshwm sim los ntawm kev kub siab - kub sintering, thiab optimize lub interface bonding xeev ntawm cov electrode thiab electrolyte.

 

Yuav ua li cas los xyuas kom meej lub uniformity ntawm roj teeb electrode txheej cov ntaub ntawv?

Xyuas kom lub uniformity ntawm roj teeb electrode txheej cov ntaub ntawv yog ua tiav los ntawm peb qhov ntev: kev ruaj ntseg ntawm cov khoom nws tus kheej, meej tswj cov txheej txheem txau, thiab kev sib raug zoo ntawm cov substrate nrog ib puag ncig. Qhov no ua tiav los ntawm kev kaw - kev tswj lub voj voog thoob plaws hauv tag nrho cov txheej txheem. Cov kev ntsuas tseem ceeb tshwj xeeb yog raws li hauv qab no:

1. Khoom siv pretreatment: Tiv thaiv txheej txheej tsis xws luag los ntawm qhov chaw.

Optimizing slurry dispersibility: Siv kev sib xyaw ua ke ntawm "siab- nrawm shearing + ultrasonic dispersion" txhawm rau rhuav tshem cov khoom agglomerated ntawm cov khoom siv thiab cov neeg ua haujlwm, tswj cov khoom loj me me kom zoo ib yam (feem ntau D50 yog 1-5μm).

Stabilizing Slurry yam ntxwv: Precisely tswj viscosity (10-}100 cP) thiab nto nro, ntxiv ib tug tsim nyog tus nqi ntawm dispersant los tiv thaiv particle sedimentation, thiab tswj slurry homogeneity los ntawm kev nruam qis-ceev nplawm kom tsis txhob muaj concentration fluctuations thaum txau.

Lim impurities thiab cua npuas: Lim cov slurry nrog 200-500 mesh npo kom tshem tawm cov khoom loj; ua lub tshuab nqus tsev degassing ua ntej tshuaj tsuag los tiv thaiv cov pinholes thiab tsis pom qhov chaw hauv cov txheej uas tshwm sim los ntawm huab cua npuas.

 

2. Txheej Txheem Txhaum Cai: Kev tswj xyuas meej ntawm kev tso dej sib xws

Refined Equipment Parameters: Lub ultrasonic nozzle zaus yog tsau ntawm 20-120 kHz kom ntseeg tau tias cov dej me me (10-50 μm); Lub kaw lus kaw lub kaw lus tswj cov khoom siv ua kua (0.1-5 mL / min) thiab lub taub hau txav ceev (1-10 mm / s) kom ntseeg tau tias cov khoom siv sib xws hauv ib cheeb tsam.

Substrate thiab Nozzle Adaptation: Ua kom ruaj khov nyob deb (5-20mm) ntawm lub nozzle thiab cov khoom siv (cov ntawv txhuas / tooj liab ntawv ci). Tswj lub nozzle trajectory siv peb-axis linkage platform kom tsis txhob ntug overflow los yog ntau thickness nyob rau hauv qhov chaw. Siv qhov nro tswj tsis tu ncua rau kev hloov pauv hloov los tiv thaiv substrate wrinkles los ntawm kev ua kom tsis sib xws.

Segmented Compensation Adjustment: Teem parameter them nyiaj (piv txwv li, nplua - kho cov kua ceev ceev) ntawm lub taub hau thiab tus Tsov tus tw ntawm cov electrode kom tsis txhob muaj txheej thickness sib txawv thaum pib- nce thiab kaw. Siv lub ntsuas tuab hauv online rau qhov tiag - lub sij hawm tawm tswv yim los kho cov tshuaj tsuag tsis zoo.

 

3. Ib puag ncig thiab Post-kev kho mob: Ua kom ruaj khov txheej txheej

Tswj Kev Txau Ib puag ncig: Ua kom lub rooj cob qhia kub ntawm 20-25℃thiab cov av noo ntawm 40% -60% kom tsis txhob muaj qhov kub thiab txias ua rau cov kuab tshuaj tsis sib xws, uas tuaj yeem ua rau txheej txheej sagging lossis tawg.

Optimized Drying and Curing: Siv segmented drying (pre- drying + final drying) to control the heat rate and avoid uneven coating shrinkage because of quick local drying. Tom qab ziab, tshuaj xyuas cov electrode kom flatness thiab muab pov tseg cov khoom uas muaj warped los yog wrinkled.