Soo koobida habka kicinta ee dareeraha korantada togan iyo taban ee baytariga lithium ion

Marka hore, mabda'a isku dhafka
Adiga oo walaaqaya daabyada iyo jir-wareejinta si ay midba midka kale u wareegaan, joojinta farsamada ayaa la abuuraa oo la ilaaliyaa, iyo wareejinta ballaaran ee u dhaxaysa dareeraha iyo wejiyada adag waa la wanaajiyey. Kicinta dareeraha adag waxaa badanaa loo qaybiyaa qaybaha soo socda: (1) joojinta walxaha adag; (2) dib-u-soo-noqoshada walxaha la dajiyay; (3) galinta walxaha laalan ee dareeraha ah; (4) Isticmaalka inta u dhaxaysa qaybaha iyo inta u dhaxaysa qaybaha iyo suufka Xooggu wuxuu keenaa qaybta agglomerates si ay u kala firdhiso ama u maamusho xajmiga qaybta; (5) kala wareejinta tirada badan ee dareeraha iyo adkaha.

Marka labaad, saamaynta kicinta

Habka isku-darka ah ayaa dhab ahaantii isku daraya qaybaha kala duwan ee slurry si wadajir ah saamiga caadiga ah si loo diyaariyo slurry si loo fududeeyo dahaarka isku midka ah iyo hubinta joogteynta qaybaha tiirka. Maaddooyinka guud ahaan waxay ka kooban yihiin shan habraac, kuwaas oo kala ah: ka-hortag, isku darka, qoynta, kala firdhisanaanta iyo qulqulka alaabta ceeriin.

Saddexaad, cabirrada slurry

1, viscosity:

Iska caabinta dareeraha qulqulka waxaa lagu qeexaa cadadka cadaadiska xiirid ee looga baahan yahay 25 px 2 diyaarad marka dareeruhu ku qulqulayo heerka 25 px/s, oo loo yaqaan viscosity kinematic, gudaha Pa.s.
Viscosity waa hantida dareeraha. Marka dareeruhu ku qulqulo dhuumaha, waxaa jira saddex gobol oo socodka laminarka ah, socodka ku-meel-gaarka ah, iyo qulqulka qulqulaya. Saddexda gobol ee socodka ayaa sidoo kale ku jira qalabka kicinta, iyo mid ka mid ah xuduudaha ugu muhiimsan ee lagu go'aaminayo gobolladan waa viscosity ee dareeraha.
Inta lagu guda jiro habka walaaqaya, waxaa guud ahaan loo arkaa in viscosity ka yar yahay 5 Pa.s waa dareere viscosity hooseeya, sida: biyaha, saliidda castor, sonkorta, macaanka, malab, saliid saliid, emulsion hooseeyo viscosity, iwm; 5-50 Pas waa dareere viscosity dhexdhexaad ah Tusaale ahaan: khad, daawada cadayga, iwm.; 50-500 Pas waa dareere viscosity sare leh, sida xanjada, plastisol, shidaal adag, iwm.; in ka badan 500 pa

2, cabbirka qayb D50:

Baaxadda cabbirka cabbirka walxaha 50% ee mugga walxaha ku jira slurry

3, nuxur adag:

Boqolkiiba walxaha adag ee ku jira qulqulka, saamiga aragtida ee nuxurka adag ayaa ka yar nuxurka adag ee shixnadda.

Afar, cabbirka saamaynta isku dhafan

Habka lagu ogaanayo isku-dhafka isku-dhafka iyo isku-darka nidaamka joojinta dareeraha adag:

1, cabbir toos ah

1) Habka Viscosity: muunad laga soo qaadayo meelo kala duwan oo nidaamka, lagu cabbiro viscosity of slurry oo leh viscometer; Inta yar ee leexashada, ayaa sii badanaysa isku-dhafka;

2) Habka qayb:

A, muunad laga soo qaadayo meelo kala duwan oo nidaamka ah, iyadoo la adeegsanayo xoqida cabbirka walxaha si loo ilaaliyo cabbirka walxaha slurry; Marka ay u dhowdahay cabbirka walxaha uu le'eg yahay xajmiga budada alaabta ceeriin, ayaa inta badan lebbiska isku dhafka ah;

B, muunad laga soo qaadayo meelo kala duwan oo nidaamka ah, iyadoo la adeegsanayo tijaabiyaha cabbirka qaybaha kala-duwanaanshaha laysarka si loo ilaaliyo cabbirka qaybta slurry; Sida caadiga ah ee qaybinta cabbirka qaybinta, ayaa sii yaraanaya qaybaha waaweyn, inta lebbiska ah ee isku dhafka ah;

3) Habka cuf-isjiidadka gaarka ah: muunad laga soo qaado meelo kala duwan oo nidaamka ah, iyadoo la cabbirayo cufnaanta slurry-ka, leexashaduna way yaraataa, way sii lebbisan tahay isku-darka

2. Cabbir aan toos ahayn

1) Habka maadada adag (macroscopic): Muunad laga soo qaadayo meelo kala duwan oo nidaamka ah, ka dib heerkulka ku habboon iyo dubista wakhtiga, cabbirka miisaanka qaybta adag, yaraynta leexashada, isku-dhafka dheeraadka ah ee isku dhafan;

2) SEM/EPMA (microscopic): muunad laga soo qaado meelo kala duwan oo nidaamka ah, mari substrate-ka, qalalan, oo fiirso qaybaha ama walxaha filimka ka dib markaad qallajiso slurry SEM (microscope elektaroonik) / EPMA (electron probe) Qaybinta ; (Systems adag sida caadiga ah waa walxo kirishbooy ah)

Shan, habka kicinta anode

Madaw kaarboon wax-qabad leh: Waxa loo istcimaalaa sidii wakiil wax-qabad. Shaqada: Isku xirka walxaha firfircoon ee waaweyn si ay u noqoto mid wanaagsan.

Latex Copolymer - SBR (caag la isku qurxiyo oo loo yaqaan 'styrene butadiene rubber): loo isticmaalo sida wax lagu xidho. Magaca kiimikaad: Styrene-Butadiene copolymer cinjirka (polystyrene butadiene cinjirka), cinjirka biyaha-milmi kara, content adag 48 ~ 50%, PH 4 ~ 7, barta qaboojinta -5 ~ 0 °C, barta karkarinta ilaa 100 °C, heerkulka kaydinta 5 ~ 35 ° C. SBR waa kala firdhisanaanta polymer anionic leh xasilloonida farsamada iyo shaqeynta wanaagsan, waxayna leedahay xoog dammaanad sare leh.

Sodium carboxymethyl cellulose (CMC) - (carboxymethyl cellulose sodium): loo isticmaalo sidii dhumuc iyo xasiliye. Muuqashada waa budo fiber floc cad ama huruud ah ama budo cad, aan ur lahayn, aan dhadhamin, aan sun ahayn; lagu milmo biyo qabow ama biyo kulul, samaynta jel, xalku waa dhexdhexaad ama wax yar oo alkaline ah, aan lagu milmi karin ethanol, ether, Walxaha dabiiciga ah sida khamriga isopropyl ama acetone wuxuu ku milmaa 60% xal aqueous of ethanol ama acetone. Waa hygroscopic, xasilan iftiinka iyo kulaylka, viscosity ayaa hoos u dhacaya heerkulka sii kordhaya, xalku waa xasilloon yahay pH 2 ilaa 10, PH wuxuu ka hooseeyaa 2, adkaha ayaa soo degaya, pH wuxuu ka sarreeyaa 10. Heerkulka isbeddelka midabka wuxuu ahaa 227 ° C. C, heerkulka carbonization wuxuu ahaa 252 ° C, iyo xiisadda dusha sare ee 2% xalka aqueous waxay ahayd 71 nm/n.

Habka walaaqaya iyo habka daahan anode waa sida soo socota:

 
Lixaad, habka kicinta cathode

Madaw kaarboon wax-qabad leh: Waxa loo istcimaalaa sidii wakiil wax-qabad. Shaqada: Isku xirka walxaha firfircoon ee waaweyn si ay u noqoto mid wanaagsan.

NMP (N-methylpyrrolidone): waxaa loo isticmaalaa sidii dareere walaaqaya. Magaca kiimikada: N-Methyl-2-polyrrolidone, caanaha molecular: C5H9NO. N-methylpyrrolidone waa dareere udgoon yar oo ammonia ah kaas oo lagu khalkhal galin karo biyaha qayb kasta oo si buuxda loogu qaso dhammaan dareerayaasha (ethanol, acetaldehyde, ketone, hydrocarbon aromatic, iwm.). Barta karkaraya ee 204 ° C, barta toosan ee 95 ° C. NMP waa dareere aprotic polar ah oo leh sunta hoose, barta karkarinta sare, milanka wanaagsan, xulashada iyo xasilloonida. Si ballaaran loo isticmaalo soo saarista udugga; nadiifinta acetylene, olefins, diolefins. Walxaha loo isticmaalo polymer-ka iyo dhexdhexaadiyaha loogu talagalay polymerization ayaa hadda loo isticmaalaa shirkaddayada NMP-002-02, oo leh nadiif ah> 99.8%, cufnaanta gaarka ah ee 1.025 ~ 1.040, iyo nuxurka biyaha ee <0.005% (500ppm) ).

PVDF (polyvinylidene fluoride): waxaa loo isticmaalaa sidii dhumuc iyo xiraha. Polymerline crystalline budada cad oo leh cufnaanta qaraabada ah 1.75 ilaa 1.78. Waxay leedahay iska caabin UV aad u wanaagsan iyo iska caabbinta cimilada, filimkeeduna ma aha mid adag oo dillaacay ka dib markii la dhigay dibadda hal ama labaatan sano. Sifooyinka dielectric ee fluoride polyvinylidene waa gaar ah, joogto ah dielectric waa sida sare sida 6-8 (MHz ~ 60Hz), iyo tangent khasaaraha dielectric sidoo kale waa weyn, oo ku saabsan 0.02 ~ 0.2, iyo caabbinta mugga wax yar ka hooseeya, taas oo ah 2. ×1014ΩNaN. Heerkulka isticmaalka muddada-dheer waa -40 ° C ~ +150 ° C, heerkulka heerkulkan, polymer wuxuu leeyahay sifooyin farsamo oo wanaagsan. Waxay leedahay heerkulka kala-guurka galaas ah -39 ° C, heerkul ah -62 ° C ama ka yar, bar dhalaalaysa crystal ah oo ku saabsan 170 ° C, iyo kulaylka qudhuntay 316 ° C ama ka badan.

Habka walaaqaya iyo habka daahan ee Cathode:

7. Tilmaamaha viscosity ee slurry

1. Curve of viscosity slurry oo leh wakhti walaaq

Marka waqtiga la kordhiyo, viscosity of slurry waxay u egtahay in ay noqoto qiimo deggan iyada oo aan isbeddelin (waxaa la dhihi karaa in slurry si isku mid ah loo kala firdhiyey).

2. Curve of viscosity slurry leh heerkul

Markasta oo heerkulku sareeyo, waxa uu hoos u dhigayaa viscosity of slurry, viscosity-kuna waxa uu u janjeeraa qiimo deggan marka uu gaadho heer kul gaar ah.

3. Curve of content adag ee taangiga wareejinta slurry waqti

Ka dib markii slurry-ka la walaaqo, waxaa lagu shubaa haanta wareejinta ee daahan Coater. Haanta wareejinta waxa lagu kicinayaa si ay u wareegto: 25Hz (740RPM), kacaan: 35Hz (35RPM) si loo hubiyo in cabbirada slurryku ay yihiin kuwo deggan oo aan isbeddelin, oo ay ku jiraan saxarka. Heerkulka alaabta, viscosity iyo content adag si loo hubiyo isku mid ahaanshaha daahan slurry.

4, viscosity of slurry leh waqti qalooca