Isishwankathelo senkqubo yokuvuselela i-electrode slurry elungileyo nengalunganga yebhetri ye-lithium ion

Okokuqala, umgaqo wokuxuba
Ngokuxukuxa iiblade kunye nesakhelo esijikelezayo ukuze zijikelezisane, ukumiswa koomatshini kwenziwa kwaye kugcinwe, kwaye ukudluliselwa kobunzima phakathi kwezigaba zolwelo kunye neziqinileyo kuyaphuculwa. Ukuvuselelwa kolwelo oluqinileyo kudla ngokwahlulwahlulwa zibe zezi nxalenye zilandelayo: (1) ukumiswa kwee-particles eziqinileyo; (2) ukuphinda kumiswe kwee-particles ezizinzileyo; (3) ukungena kwee-particles ezixhonyiweyo kulwelo; (4) ukusetyenziswa phakathi kwee-particles naphakathi kwee-particles kunye nee-paddles Amandla abangela ukuba ii-particle agglomerates zisasaze okanye zilawule ubungakanani bee-particles; (5) ukudluliselwa kobunzima phakathi kolwelo kunye neziqinileyo.

Okwesibini, isiphumo esivuselelayo

Inkqubo yokudibanisa izinto idibanisa izinto ezahlukeneyo kwi-slurry kunye ngokwemilinganiselo eqhelekileyo ukulungiselela i-slurry ukuze kube lula ukugquma ngokulinganayo nokuqinisekisa ukuhambelana kweziqwenga zeepali. Izithako ngokubanzi ziquka iinkqubo ezintlanu, ezizezi: ukucoca kwangaphambili, ukuxuba, ukumanzisa, ukusasazwa kunye nokuqubha kwezinto ezikrwada.

Okwesithathu, iiparameter ze-slurry

1, ukuqaqamba:

Ukumelana kolwelo kumsinga kuchazwa njengobungakanani boxinzelelo lwe-shear olufunekayo kwi-25 px 2 plane nganye xa ulwelo luhamba ngesantya se-25 px/s, esibizwa ngokuba yi-kinematic viscosity, kwi-Pa.s.
Ukuqina komzimba yimpawu yolwelo. Xa ulwelo luhamba ngombhobho, kukho iimeko ezintathu zokuhamba kwe-laminar, ukuhamba kwe-transitional, kunye nokuhamba kwe-turbulent. Ezi meko zintathu zokuhamba komzimba zikhona nakwizixhobo zokuxukuxa, kwaye enye yeeparameter eziphambili ezichaza ezi meko kukuxinana kolwelo.
Ngexesha lenkqubo yokuxukuxa, ngokuqhelekileyo kucingelwa ukuba i-viscosity ingaphantsi kwe-5 Pa.s lulwelo olune-viscosity ephantsi, olufana namanzi, i-castor oil, iswekile, i-jam, ubusi, i-lubricating oil, i-low viscosity emulsion, njl.njl.; i-5-50 Pas lulwelo olune-viscosity ephakathi Umzekelo: i-inki, i-toothpaste, njl.njl.; i-50-500 Pas lulwelo olune-viscosity ephezulu, olufana ne-chewing gum, i-plastisol, i-solid fuel, njl.njl.; i-500 Pas lulwelo olune-viscosity ephezulu olufana na: imixube yerabha, i-plastic melts, i-organic Silicon njalo njalo.

2, ubungakanani besuntswana D50:

Uluhlu lobungakanani bobukhulu besuntswana yi-50% ngokomthamo wesuntswana kwi-slurry

3, umxholo oqinileyo:

Ipesenti yezinto eziqinileyo kwi-slurry, umlinganiselo wethiyori womxholo oqinileyo ungaphantsi komxholo oqinileyo wokuthunyelwa

Okwesine, umlinganiselo weziphumo ezixutyiweyo

Indlela yokufumanisa ukufana kokuxuba nokuxuba inkqubo yokumiswa kwe-solid-liquid:

1, umlinganiselo othe ngqo

1) Indlela yokuxinana: ukuvavanya ukusuka kwiindawo ezahlukeneyo zenkqubo, ukulinganisa i-viscosity ye-slurry nge-viscometer; okukhona ukuphambuka kuncinci, kokukhona ukuxuba kufana ngakumbi;

2) Indlela yamasuntswana:

A, ukuthabatha iisampulu kwiindawo ezahlukeneyo zenkqubo, kusetyenziswa isixhobo sokukrala ubungakanani besuntswana ukujonga ubungakanani besuntswana yeslurry; okukhona ubukhulu besuntswana busondele kubungakanani bomgubo wezinto eziluhlaza, kokukhona ukuxubana kufana ngakumbi;

B, ukuthabatha iisampulu kwiindawo ezahlukeneyo zenkqubo, kusetyenziswa isixhobo sokuvavanya ubungakanani besuntswana se-laser diffraction ukujonga ubungakanani besuntswana le-slurry; okukhona ukusasazwa kobukhulu besuntswana kuqhelekile, kokukhona amasuntswana amakhulu emancinci, kokukhona ukuxubana kufana ngakumbi;

3) Indlela ethile yobunzima: ukuvavanya ukusuka kwiindawo ezahlukeneyo zenkqubo, ukulinganisa uxinano lwe-slurry, kokukhona ukuphambuka kuncinci, kokukhona ukuxuba kufana ngakumbi

2. Ukulinganisa okungathanga ngqo

1) Indlela yomxholo oqinileyo (macroscopic): Ukuthatha iisampulu kwiindawo ezahlukeneyo zenkqubo, emva kobushushu obufanelekileyo kunye nexesha elifanelekileyo lokubhaka, ukulinganisa ubunzima benxalenye eqinileyo, okukhona ukuphambuka kuncinci, kokukhona ukuxuba kufana ngakumbi;

2) I-SEM/EPMA (i-microscopic): isampuli evela kwiindawo ezahlukeneyo zenkqubo, yifake kwi-substrate, yomise, kwaye ujonge amasuntswana okanye izinto ezikwifilimu emva kokomisa i-slurry nge-SEM (i-electron microscope) / i-EPMA (i-electron probe) Ukusasazwa; (izinto eziqinileyo zenkqubo zihlala zizinto zokuqhuba)

Five, inkqubo yokuvuselela i-anode

Ikhabhoni emnyama eqhubayo: Isetyenziswa njengesixhobo sokuqhubayo. Umsebenzi: Ukudibanisa amasuntswana amakhulu asebenzayo ukuze ukuqhubelayo kube kuhle.

I-Copolymer latex — SBR (irabha ye-styrene butadiene): isetyenziswa njenge-binder. Igama lekhemikhali: I-Styrene-Butadiene copolymer latex (i-polystyrene butadiene latex), i-latex enyibilikayo emanzini, umxholo oqinileyo 48~50%, PH 4~7, indawo yokuqandisa -5~0 °C, indawo yokubila malunga ne-100 °C, ubushushu bokugcina 5~35 ° C. I-SBR yi-anionic polymer dispersion enozinzo oluhle loomatshini kunye nokusebenza, kwaye inamandla aphezulu okubopha.

I-Sodium carboxymethyl cellulose (CMC) – (i-carboxymethyl cellulose sodium): isetyenziswa njengesithambisi kunye nesiqinisi. Inkangeleko yayo yi-floc fiber powder emhlophe okanye emthubi okanye umgubo omhlophe, ayinavumba, ayinancasa, ayinatyhefu; iyanyibilika emanzini abandayo okanye emanzini ashushu, yenza ijeli, isisombululo asithathi cala okanye sine-alkaline kancinci, asinyibiliki kwi-ethanol, i-ether, isinyibilikisi se-organic esifana ne-isopropyl alcohol okanye i-acetone siyanyibilika kwisisombululo samanzi se-ethanol okanye i-acetone esingama-60%. Siyi-hygroscopic, sizinzile ekukhanyeni nasekufudumaleni, i-viscosity iyancipha xa ubushushu busanda, isisombululo sizinzile kwi-pH 2 ukuya kwi-10, i-PH ingaphantsi kwe-2, izinto eziqinileyo ziyajijeka, kwaye i-pH iphezulu kune-10. Ubushushu bokutshintsha kombala babuyi-227 ° C, ubushushu be-carbonization babuyi-252 ° C, kwaye uxinzelelo lomphezulu wesisombululo samanzi se-2% yayiyi-71 nm/n.

Inkqubo yokuxuba nokufaka i-anode yile ilandelayo:

 
Okwesithandathu, inkqubo yokuxuba i-cathode

Ikhabhoni emnyama eqhubayo: Isetyenziswa njengesixhobo sokuqhubayo. Umsebenzi: Ukudibanisa amasuntswana amakhulu asebenzayo ukuze ukuqhubelayo kube kuhle.

I-NMP (N-methylpyrrolidone): isetyenziswa njengesinyibilikisi esixubayo. Igama lekhemikhali: I-N-Methyl-2-polyrrolidone, ifomula yemolekyuli: C5H9NO. I-N-methylpyrrolidone lulwelo olunevumba eliphantsi le-ammonia oluxutywa namanzi nangayiphi na indlela kwaye luxutywe phantse ngokupheleleyo nazo zonke izinyibilikisi (i-ethanol, i-acetaldehyde, i-ketone, i-aromatic hydrocarbon, njl.njl.). Iqondo lokubila le-204 ° C, iqondo lokutsha le-95 ° C. I-NMP sisinyibilikisi se-polar aprotic esinetyhefu ephantsi, iqondo lokubila eliphezulu, ukunyibilika okugqwesileyo, ukukhetha kunye nokuzinza. Isetyenziswa kakhulu ekukhupheni i-aromatics; ukucocwa kwe-acetylene, ii-olefins, ii-diolefins. Isinyibilikisi esisetyenziselwa i-polymer kunye ne-medium ye-polymerization ngoku sisetyenziswa kwinkampani yethu kwi-NMP-002-02, enobunyulu be->99.8%, ubunzima obuthile be-1.025 ~ 1.040, kunye nomxholo wamanzi we-<0.005% (500ppm).

I-PVDF (i-polyvinylidene fluoride): isetyenziswa njengesithambisi kunye nesihlanganisi. I-polymer emhlophe e-powdery crystalline enobunzima obuphakathi kwe-1.75 ukuya kwi-1.78. Inokumelana okuhle kakhulu kwe-UV kunye nokumelana nokuguquguquka kwemozulu, kwaye ifilimu yayo ayiqinanga kwaye ayiqhekekanga emva kokubekwa ngaphandle kangangeminyaka eli-1 okanye amabini. Iimpawu ze-dielectric ze-polyvinylidene fluoride zichanekile, i-dielectric constant iphezulu njenge-6-8 (MHz ~ 60Hz), kwaye i-dielectric loss tangent nayo inkulu, malunga ne-0.02 ~ 0.2, kwaye ukumelana nomthamo kuphantsi kancinci, okuyi-2 × 1014ΩNaN. Ubushushu bayo bokusetyenziswa ixesha elide yi- -40 ° C ~ +150 ° C, kolu luhlu lobushushu, i-polymer ineempawu ezilungileyo zoomatshini. Ineqondo lobushushu lokutshintsha kweglasi eliyi- -39 ° C, iqondo lobushushu elingaphantsi kwe- -62 ° C okanye ngaphantsi, iqondo lokunyibilika kwekristale elimalunga ne-170 ° C, kunye nobushushu bokubola kobushushu obuyi-316 ° C okanye ngaphezulu.

Inkqubo yokuxuba kunye nokufaka i-cathode:

7. Iimpawu zokuxinana kwe-slurry

1. Igophe le-slurry viscosity kunye nexesha lokuxukuxa

Njengoko ixesha lokuxukuxa lisanda, i-viscosity ye-slurry idla ngokuba lixabiso elizinzileyo ngaphandle kokutshintsha (kunokuthiwa i-slurry isasazwe ngokulinganayo).

2. Igophe le-slurry viscosity kunye nobushushu

Okukhona ubushushu buphezulu, kokukhona ubushushu be-slurry buphantsi, kwaye ubushushu buhlala buzinzile xa bufikelela kubushushu obuthile.

3. Igophe lomxholo oqinileyo we-slurry yetanki yokudlulisa ngokuhamba kwexesha

Emva kokuba i-slurry ixutywe, ifakwa ngepayipi kwi-transfer tank ukuze i-Coater coating. I-transfer tank ixutywe ukuze ijikeleze: 25Hz (740RPM), i-revolution: 35Hz (35RPM) ukuqinisekisa ukuba iiparameter ze-slurry zizinzile kwaye aziyi kutshintsha, kuquka ne-pulp. Ubushushu bezinto, i-viscosity kunye nomxholo oqinileyo ukuqinisekisa ukufana kwe-slurry coating.

4, i-viscosity ye-slurry ene-time curve