Chidule cha njira yotsitsimutsa ya zabwino ndi zoipa electrode slurry ya lithiamu ion batire

Choyamba, mfundo yosakaniza
Poyambitsa masamba ndi chimango chozungulira kuti azungulirana, kuyimitsidwa kwamakina kumapangidwa ndikusungidwa, ndipo kusamutsidwa kwakukulu pakati pamadzi ndi magawo olimba kumakulitsidwa. Kusokonezeka kwamadzimadzi nthawi zambiri kumagawidwa m'magawo otsatirawa: (1) kuyimitsidwa kwa tinthu tating'onoting'ono; (2) resuspension wa kukhazikika particles; (3) kulowerera kwa inaimitsidwa particles mu madzi; (4) ntchito pakati pa particles ndi pakati particles ndi paddles Mphamvu amachititsa tinthu agglomerates kumwazikana kapena kulamulira tinthu kukula; (5) kutengerapo misa pakati pa madzi ndi olimba.

Chachiwiri, yogwira ntchito

Kuphatikizikako kumasakaniza zigawo zosiyanasiyana mu slurry pamodzi mu chiŵerengero chokhazikika kuti akonze slurry kuti athandize kupaka yunifolomu ndikuonetsetsa kuti zidutswa zamtengowo zikugwirizana. Zosakanizazo nthawi zambiri zimakhala ndi njira zisanu, zomwe ndi: pretreatment, blending, wetting, kubalalitsidwa ndi flocculation wa zipangizo.

Chachitatu, magawo a slurry

1, kukhuthala:

Kukaniza kwa madzi othamanga kumatanthauzidwa ngati kuchuluka kwa kumeta ubweya wofunikira pa 25 px 2 ndege pamene madzi akuyenda pa mlingo wa 25 px / s, wotchedwa kinematic viscosity, ku Pa.s.
Viscosity ndi katundu wamadzimadzi. Pamene madzi akuyenda mupaipi, pali zigawo zitatu za kutuluka kwa laminar, kusintha kwa kusintha, ndi kutuluka kwa chipwirikiti. Mayiko atatuwa otuluka amapezekanso mu zida zoyambitsa, ndipo chimodzi mwazinthu zazikulu zomwe zimatsimikizira kuti mayikowa ndi mamasukidwe amadzimadzi.
Pa nthawi yogwira ntchito, nthawi zambiri amaona kuti mamasukidwe akayendedwe ndi zosakwana 5 Pa.s ndi otsika mamasukidwe akayendedwe madzimadzi, monga: madzi, Kasitolo mafuta, shuga, kupanikizana, uchi, lubricating mafuta, otsika mamasukidwe akayendedwe emulsion, etc.; 5-50 Pas ndi sing'anga mamasukidwe akayendedwe madzimadzi Mwachitsanzo: inki, otsukira mano, etc.; 50-500 Pas ndi mkulu mamasukidwe akayendedwe madzimadzi, monga kutafuna chingamu, plastisol, olimba mafuta, etc.; zoposa 500 Pas ndi owonjezera mkulu mamasukidwe amadzimadzi kukhuthala monga: zosakaniza mphira, pulasitiki kusungunuka, organic Silicon ndi zina zotero.

2, kukula kwa tinthu D50:

Kukula osiyanasiyana tinthu kukula 50% ndi buku la particles mu slurry

3, zinthu zolimba:

Peresenti ya zinthu zolimba mu slurry, chiŵerengero cha chiphunzitso cha zinthu zolimba ndizochepa kuposa zomwe zili zolimba zomwe zimatumizidwa.

Chachinayi, muyeso wa zotsatira zosakanikirana

Njira yodziwira kufanana kwa kusakaniza ndi kusakaniza kwa dongosolo loyimitsidwa lamadzimadzi:

1, muyeso wolunjika

1) Viscosity njira: sampuli kuchokera kumadera osiyanasiyana a dongosolo, kuyeza mamasukidwe akayendedwe a slurry ndi viscometer; pang'ono kupatuka, ndi yunifolomu kusanganikirana;

2) Njira ya Particle:

A, sampuli ku malo osiyanasiyana a dongosolo, ntchito tinthu kukula scraper kuona tinthu kukula kwa slurry; kuyandikira tinthu kukula ndi kukula kwa zopangira ufa, m'pamenenso yunifolomu kusanganikirana;

B, sampuli kuchokera m'malo osiyanasiyana a dongosolo, pogwiritsa ntchito laser diffraction tinthu kukula Tester kuona tinthu kukula kwa slurry; pamene tinthu tating'onoting'onoting'onoting'onoting'onoting'onoting'onoting'onoting'ono, tinthu tating'onoting'ono tating'onoting'ono tating'onoting'onoting'ono tating'onoting'ono, timagwirizanitsa;

3) Njira yeniyeni yokoka: sampuli kuchokera kumalo osiyanasiyana a dongosolo, kuyeza kachulukidwe ka slurry, kuchepa kwapang'onopang'ono, kusakanikirana kofanana.

2. Muyeso wosalunjika

1) Njira yokhazikika (macroscopic): Zitsanzo kuchokera kumalo osiyanasiyana a dongosolo, pambuyo pa kutentha koyenera ndi kuphika kwa nthawi, kuyeza kulemera kwa gawo lolimba, kuchepa kwazing'ono, kusakanikirana kofanana;

2) SEM / EPMA (pang'onoting'ono): zitsanzo kuchokera m'malo osiyanasiyana a dongosolo, gwiritsani ntchito gawo lapansi, zowuma, ndikuwona tinthu tating'onoting'ono tating'onoting'ono mufilimuyo mutatha kuyanika slurry ndi SEM (electron microscope) / EPMA (electron probe) Distribution ; (zolimba zamakina nthawi zambiri zimakhala kondakitala)

Chachisanu, anode oyambitsa ndondomeko

Conductive carbon black: Amagwiritsidwa ntchito ngati conductive agent. Ntchito: Kulumikiza tinthu tating'onoting'ono tating'ono tomwe timagwira ntchito kuti ma conductivity akhale abwino.

Copolymer latex - SBR (rabara ya styrene butadiene): yogwiritsidwa ntchito ngati chomangira. Dzina la mankhwala: Styrene-Butadiene copolymer latex (polystyrene butadiene latex), latex yosungunuka m'madzi, zolimba 48~50%, PH 4 ~ 7, kuzizira -5~0 °C, malo otentha pafupifupi 100 °C, kutentha kwa yosungirako 5 ~ 35 ° C. SBR ndi kubalalitsidwa kwa anionic polima yokhala ndi kukhazikika kwamakina ndi magwiridwe antchito, ndipo imakhala ndi mphamvu zambiri zomangira.

Sodium carboxymethyl cellulose (CMC) - (carboxymethyl cellulose sodium): amagwiritsidwa ntchito ngati thickener ndi stabilizer. Maonekedwe ndi oyera kapena achikasu floc CHIKWANGWANI ufa kapena woyera ufa, odorless, zoipa, sanali poizoni; sungunuka m'madzi ozizira kapena madzi otentha, kupanga gel osakaniza, njira yothetsera ndale kapena pang'ono zamchere, insoluble mu Mowa, etha, organic zosungunulira monga isopropyl mowa kapena acetone ndi sungunuka mu 60% amadzimadzi njira ya Mowa kapena acetone. Ndi hygroscopic, khola kuwala ndi kutentha, mamasukidwe akayendedwe amachepetsa ndi kuwonjezeka kutentha, yankho ndi khola pa pH 2 mpaka 10, PH ndi m'munsi kuposa 2, zolimba ndi mpweya, ndipo pH ndi apamwamba kuposa 10. Kusintha mtundu kutentha anali 227 ° C, kutentha kwa carbonization kunali 252 ° C, ndipo kuthamanga kwa 2% yamadzimadzi kunali 71 nm / n.

Kukondoweza kwa anode ndi kuyanika ndi motere:

 
Chachisanu ndi chimodzi, cathode yoyambitsa ndondomeko

Conductive carbon black: Amagwiritsidwa ntchito ngati conductive agent. Ntchito: Kulumikiza tinthu tating'onoting'ono tating'ono tomwe timagwira ntchito kuti ma conductivity akhale abwino.

NMP (N-methylpyrrolidone): yogwiritsidwa ntchito ngati chosungunulira choyambitsa. Dzina la mankhwala: N-Methyl-2-polyrrolidone, chilinganizo cha maselo: C5H9NO. N-methylpyrrolidone ndi madzi onunkhira pang'ono ammonia omwe amasakanikirana ndi madzi mumgawo uliwonse ndipo amakhala pafupifupi osakanikirana ndi zosungunulira zonse (ethanol, acetaldehyde, ketone, aromatics hydrocarbon, etc.). The otentha mfundo 204 ° C, kung'anima mfundo 95 ° C. NMP ndi polar aprotic zosungunulira ndi otsika kawopsedwe, mkulu kuwira mfundo, kwambiri solubility, selectivity ndi bata. Amagwiritsidwa ntchito kwambiri m'zigawo za aromatics; kuyeretsa acetylene, olefins, diolefins. The zosungunulira ntchito polima ndi sing'anga kwa polymerization panopa ntchito mu kampani yathu NMP-002-02, ndi chiyero> 99.8%, mphamvu yokoka yeniyeni 1.025 ~ 1.040, ndi madzi zili <0.005% (500ppm) ).

PVDF (polyvinylidene fluoride): amagwiritsidwa ntchito ngati thickener ndi binder. White powdery crystalline polima yokhala ndi kachulukidwe wachibale wa 1.75 mpaka 1.78. Ili ndi mphamvu yabwino kwambiri ya UV komanso kukana kwa nyengo, ndipo filimu yake si yovuta komanso yosweka atayikidwa panja kwa chaka chimodzi kapena ziwiri. The dielectric katundu wa polyvinylidene fluoride ndi enieni, dielectric constant ndi okwera 6-8 (MHz ~ 60Hz), ndi dielectric imfa tangent ndi yaikulu, pafupifupi 0.02 ~ 0.2, ndipo voliyumu kukana ndi otsika pang'ono, amene ndi 2 ×1014ΩNaN Kutentha kwake kwa nthawi yayitali ndi -40 ° C ~ +150 ° C, mumtundu uwu wa kutentha, polima ali ndi katundu wabwino wamakina. Ili ndi kutentha kwa galasi -39 ° C, kutentha kwa embrittlement -62 ° C kapena kucheperapo, malo osungunuka a kristalo pafupifupi 170 ° C, ndi kutentha kwa kutentha kwa 316 ° C kapena kuposa.

Cathode kuyambitsa ndi kuyanika ndondomeko:

7. Viscosity makhalidwe a slurry

1. Mpiringidzo wa slurry viscosity ndi nthawi yoyambitsa

Pamene nthawi yowonjezereka ikuwonjezeka, kukhuthala kwa slurry kumakhala mtengo wokhazikika popanda kusintha (tinganene kuti slurry yabalalika mofanana).

2. Mpiringidzo wa slurry viscosity ndi kutentha

Kutentha kwapamwamba, kutsika kwa viscosity ya slurry, ndipo mamasukidwe akayendedwe amakhala ndi mtengo wokhazikika akafika kutentha kwina.

3. Mapindikira olimba a tanki yosinthira ndi nthawi

Pambuyo slurry kugwedezeka, amapoperedwa ku thanki yosinthira kuti aphike Coater. Tanki yosinthira imalimbikitsidwa kuti izungulira: 25Hz (740RPM), kusintha: 35Hz (35RPM) kuonetsetsa kuti magawo a slurry ndi okhazikika ndipo sasintha, kuphatikiza zamkati. Kutentha kwazinthu, mamasukidwe akayendedwe ndi zolimba kuti zitsimikizire kufanana kwa zokutira za slurry.

4, kukhuthala kwa slurry ndi nthawi yopindika