Isishwankathelo senkqubo yokuvuselela i-electrode slurry efanelekileyo kunye ne-negative ye-lithium ion ibhetri

Okokuqala, umgaqo wokuxuba
Ngokushukumisa ii-blades kunye nesakhelo esijikelezayo ukuze sijikeleze omnye nomnye, ukumiswa komatshini kuveliswa kwaye kugcinwe, kwaye ukuhanjiswa kobuninzi phakathi kwezigaba zamanzi kunye neziqinileyo kuphuculwe. Ukushukuma kolwelo oluqinileyo ludla ngokwahlulwa lube ngamacandelo alandelayo: (1) ukunqunyanyiswa kwamasuntswana aqinileyo; (2) ukumiswa kwakhona kweengqungquthela ezihleliweyo; (3) ukungeniswa kwamasuntswana amisiweyo kulwelo; (4) sebenzisa phakathi kwamasuntswana naphakathi kwamasuntswana kunye neepaddles Amandla abangela ukuba i-particle agglomerates isasazeke okanye ilawule ubungakanani bamasuntswana; (5) Ugqithiso lobunzima phakathi kolwelo kunye nokuqinileyo.

Okwesibini, umphumo oshukumisayo

Inkqubo yokudibanisa ngokwenene ixuba amacandelo ahlukeneyo kwi-slurry kunye kunye nomlinganiselo oqhelekileyo ukulungiselela i-slurry ukuququzelela ukugquma okufanayo kunye nokuqinisekisa ukuhambelana kwamaqhekeza epali. Izithako ngokubanzi ziquka iinkqubo ezintlanu, ezizezi: unyango lwangaphambili, ukudibanisa, ukumanzisa, ukusasazwa kunye nokushukuma kwemathiriyeli ekrwada.

Okwesithathu, iiparamitha ezinodaka

1, viscosity:

Ukuxhatshazwa kolwelo lokuhamba kuchazwa njengobungakanani boxinzelelo lwe-shear olufunekayo kwi-25 px 2 indiza xa ulwelo luhamba ngesantya se-25 px / s, ebizwa ngokuba yi-kinematic viscosity, e-Pa.s.
I-Viscosity yipropati yolwelo. Xa ulwelo luhamba kumbhobho, kukho iimeko ezintathu zokuqukuqela kwe-laminar, ukuqukuqela okudlulayo, kunye nokuqukuqela kwesiphithiphithi. Ezi zizwe zintathu zokuhamba zikwakho kwisixhobo esishukumisayo, kwaye enye yeeparamitha eziphambili ezimisela la mazwe yi-viscosity ye-fluid.
Ngethuba lenkqubo yokuvuselela, ngokuqhelekileyo kuqwalaselwa ukuba i-viscosity ingaphantsi kwe-5 Pa.s i-viscosity fluid ephantsi, njengale: amanzi, ioli ye-castor, iswekile, i-jam, ubusi, ioli yokuthambisa, i-emulsion ye-viscosity ephantsi, njl.; 5-50 I-Pas yi-medium viscosity fluid Umzekelo: i-inki, intlama yamazinyo, njl. njl.; I-50-500 Pa ii-viscosity fluids eziphezulu, ezifana netshungama, iplastisol, isibaso esiqinileyo, njl.; ngaphezu kwama-500 eePa ziilwelo ezongezelelweyo ze-viscosity ephezulu ezifana: imixube yerabha, inyibiliko yeplastiki, i-organic Silicon njalo njalo.

2, ubungakanani bamasuntswana D50:

Ubungakanani besayizi ye-particle ye-50% ngomthamo weengqungquthela kwi-slurry

3, umxholo oqinileyo:

Ipesenti yezinto eziqinileyo kudaka, umlinganiselo wethiyori womxholo oqinileyo ungaphantsi komxholo oqinileyo wothumelo.

Okwesine, umlinganiselo wemiphumo edibeneyo

Indlela yokubona ukufana kokuxuba kunye nokuxutywa kwenkqubo yokunqunyanyiswa kolwelo oluqinileyo:

1, umlinganiselo othe ngqo

1) Indlela ye-Viscosity: isampuli ukusuka kwizikhundla ezahlukeneyo zenkqubo, ukulinganisa i-viscosity ye-slurry nge-viscometer; ukuphambuka kuncinci, ngakumbi ukuxubana okufanayo;

2) Indlela yamasuntswana:

A, isampuli ezivela kwiindawo ezahlukeneyo zenkqubo, usebenzisa i-particle size scraper ukujonga ubungakanani be-particle ye-slurry; ukusondela ubungakanani bamasuntswana kubungakanani bepowder ekrwada, kokukhona ukuxubana okufanayo;

B, isampuli ukusuka kwizikhundla ezahlukeneyo zenkqubo, usebenzisa i-laser diffraction particle size tester ukujonga ubungakanani be-particle ye-slurry; Okukhona kuqhelekile ukusasazwa kobungakanani bamasuntswana, amasuntswana amancinane, kokukhona ukuxubana kufana;

3) Indlela ethile yomxhuzulane: iisampulu ezivela kwiindawo ezahlukeneyo zenkqubo, ukulinganisa ukuxinana kwe-slurry, encinci ukutenxa, ukuxuba okufanayo.

2. Umlinganiselo ongathanga ngqo

I-1) Indlela yomxholo oqinileyo (i-macroscopic): Isampuli ezivela kwizikhundla ezahlukeneyo zenkqubo, emva kokushisa okufanelekileyo kunye nexesha lokubhaka, ukulinganisa ubunzima becandelo eliqinileyo, ukuphambuka kuncinci, ukuxuba okufanayo;

I-2) i-SEM / EPMA (i-microscopic): isampuli ukusuka kwizikhundla ezahlukeneyo zenkqubo, ifake isicelo kwi-substrate, yomile, kwaye igcine iincinci okanye izinto kwifilimu emva kokumisa i-slurry nge-SEM (i-electron microscope) / EPMA (i-electron probe) Ukusabalalisa ; (iinkqubo eziqinileyo zidla ngokuba yimathiriyeli ye-conductor)

Eyesihlanu, inkqubo yokuvuselela i-anode

Ikhabhoni eqhubayo emnyama: Isetyenziswa njenge arhente eqhubayo. Umsebenzi: Ukudibanisa amasuntswana amakhulu asebenzayo ukwenza i-conductivity ilungile.

I-copolymer latex - SBR (i-styrene butadiene rubber): isetyenziswe njenge-binder. Igama leKhemikhali: I-Styrene-Butadiene copolymer latex (i-polystyrene butadiene latex), i-latex e-soluble yamanzi, umxholo oqinileyo 48 ~ 50%, PH 4 ~ 7, indawo yokukhenkceza -5 ~ 0 °C, indawo yokubilisa malunga ne-100 °C, ubushushu bokugcina i-5 ~ 35 ° C. I-SBR yi-anionic polymer dispersion enozinzo olulungileyo lomatshini kunye nokusebenza, kwaye inamandla amakhulu okudibanisa.

I-sodium carboxymethyl cellulose (CMC) - (i-carboxymethyl cellulose sodium): isetyenziswe njenge-thickener kunye ne-stabilizer. Imbonakalo ngumgubo wefiber emhlophe okanye etyheli okanye umgubo omhlophe, awunavumba, awunancasa, awunatyhefu; i-soluble emanzini abandayo okanye kumanzi ashushu, ukwenza i-gel, isisombululo singathathi hlangothi okanye i-alkaline kancinane, ayinyibiliki kwi-ethanol, i-ether, i-solvent ye-organic efana ne-isopropyl alcohol okanye i-acetone iyanyibilika kwi-60% yesisombululo samanzi se-ethanol okanye i-acetone. I-hygroscopic, izinzile ekukhanyeni kunye nobushushu, i-viscosity iyancipha ngokunyuka kwamaqondo okushisa, isisombululo sizinzile kwi-pH 2 ukuya kwi-10, i-PH ingaphantsi kwe-2, i-solids iyancipha, kwaye i-pH ingaphezulu kwe-10. Ubushushu bokutshintsha umbala ngu-227 ° C, ukushisa kwe-carbonization kwakungama-252 ° C, kwaye ukunyanzeliswa komhlaba we-2% isisombululo samanzi sasiyi-71 nm / n.

Inkqubo yokuvuselela i-anode kunye nokugquma imi ngolu hlobo lulandelayo:

 
Okwesithandathu, inkqubo yokuvuselela i-cathode

Ikhabhoni eqhubayo emnyama: Isetyenziswa njenge arhente eqhubayo. Umsebenzi: Ukudibanisa amasuntswana amakhulu asebenzayo ukwenza i-conductivity ilungile.

I-NMP (N-methylpyrrolidone): isetyenziswe njengesinyibilikisi esishukumisayo. Igama leKhemikhali: N-Methyl-2-polyrrolidone, i-molecular formula: C5H9NO. I-N-methylpyrrolidone lulwelo olunuka kancinci i-ammonia oludityaniswa namanzi nakweyiphi na imilinganiselo kwaye luphantse luxutywe ngokupheleleyo nazo zonke izinyibilikisi (i-ethanol, i-acetaldehyde, i-ketone, i-aromatic hydrocarbon, njl.). Indawo yokubilisa ye-204 ° C, i-flash point ye-95 ° C. I-NMP yi-solvent ye-polar aprotic enetyhefu ephantsi, indawo yokubilisa ephezulu, ukunyibilika okugqwesileyo, ukukhetha kunye nokuzinza. Isetyenziswa ngokubanzi kwi-aromatics extraction; ukuhlanjululwa kwe-acetylene, i-olefins, i-diolefins. I-solvent esetyenziselwa i-polymer kunye ne-medium ye-polymerization isetyenziswa ngoku kwinkampani yethu ye-NMP-002-02, kunye nococeko lwe-> 99.8%, ubunzima obuthile be-1.025 ~ 1.040, kunye nomxholo wamanzi we- <0.005% (500ppm) ).

I-PVDF (i-polyvinylidene fluoride): isetyenziswa njenge-thiyener kunye nesibophelelo. Ipolymer emhlophe engumgubo wekristale enobunzima obuphakathi kwe-1.75 ukuya kwi-1.78. Inokumelana ne-UV elungileyo kakhulu kunye nokumelana nemozulu, kwaye ifilimu yayo ayinzima kwaye iqhekekile emva kokuba ibekwe ngaphandle isithuba seminyaka engamashumi amabini. Iimpawu ze-dielectric ze-polyvinylidene fluoride zichanekileyo, i-dielectric constant iphezulu njenge-6-8 (MHz ~ 60Hz), kunye ne-dielectric loss tangent nayo inkulu, malunga ne-0.02 ~ 0.2, kunye nokumelana nomthamo kuphantsi kancinci, okuyi-2 ×1014ΩNaN. Ukushisa kwayo kwexesha elide lokusetyenziswa ngu-40 ° C ~ +150 ° C, kulo luhlu lweqondo lokushisa, i-polymer ineempawu ezintle zomatshini. Inobushushu beglasi benguqu ye -39 ° C, iqondo lobushushu le-embrittlement le -62 ° C okanye ngaphantsi, indawo yokunyibilika kwekristale malunga ne-170 ° C, kunye neqondo lokushisa lokubola kwe-316 ° C okanye ngaphezulu.

Inkqubo yokuvuselela kunye nokugquma kweCathode:

7. Iimpawu ze-Viscosity ze-slurry

1. Ijika le-viscosity ye-slurry kunye nexesha lokuvuselela

Njengoko ixesha lokuvuselela landiswa, i-viscosity ye-slurry ivame ukuba yixabiso elizinzile ngaphandle kokutshintsha (kunokuthiwa ukuba i-slurry iye yahlakazwa ngokufanayo).

2. Ijika le-slurry viscosity kunye nobushushu

Ukuphakama kweqondo lokushisa, i-viscosity ephantsi ye-slurry, kwaye i-viscosity ithandeka kwixabiso elizinzile xa ifikelela kwiqondo elithile lobushushu.

3. Igophe lomxholo oqinileyo wetanki yokudlulisa i-slurry kunye nexesha

Emva kokuba i-slurry ishukunyisiwe, ifakwe kwitanki yokudluliselwa kwi-Coater coater. Itanki yokudlulisa ishukunyiswa ukujikeleza: 25Hz (740RPM), i-revolution: 35Hz (35RPM) ukuqinisekisa ukuba iiparitha ze-slurry zizinzile kwaye aziyi kutshintsha, kuquka i-pulp. Ubushushu bezinto eziphathekayo, i-viscosity kunye nomxholo oqinileyo wokuqinisekisa ukufana kwe-slurry coating.

4, i-viscosity ye-slurry kunye nejika lexesha