Chidule cha njira yosakaniza ya slurry ya ma electrode abwino ndi oipa a batri ya lithiamu ion

Choyamba, mfundo yosakaniza
Mwa kusakaniza masamba ndi chimango chozungulira kuti zizungulirane, kuyimitsidwa kwa makina kumapangidwa ndikusamalidwa, ndipo kusamutsa kwa misa pakati pa magawo amadzimadzi ndi olimba kumakulitsidwa. Kusuntha kwa madzi olimba nthawi zambiri kumagawidwa m'magawo otsatirawa: (1) kuyimitsidwa kwa tinthu tolimba; (2) kuyimitsidwanso kwa tinthu tokhazikika; (3) kulowa kwa tinthu tomwe tapachikidwa mumadzimadzi; (4) kugwiritsa ntchito pakati pa tinthu ndi pakati pa tinthu ndi mapadi Mphamvuyo imapangitsa kuti tinthu tating'onoting'ono tifalikire kapena kuwongolera kukula kwa tinthu; (5) kusamutsa kwa misa pakati pa madzi ndi olimba.

Chachiwiri, mphamvu yosonkhezera

Njira yopangira zinthu zosakaniza imasakaniza zinthu zosiyanasiyana zomwe zili mu slurry pamodzi mu chiŵerengero chokhazikika kuti ikonzekere slurry kuti ipangitse kuti slurry ikhale yofanana komanso kuonetsetsa kuti zidutswa za mizati zikugwirizana. Zosakaniza nthawi zambiri zimakhala ndi njira zisanu, zomwe ndi: kukonza zinthu zisanakonzedwe, kusakaniza, kunyowetsa, kufalitsa ndi kusuntha kwa zinthu zopangira.

Chachitatu, magawo a slurry

1, kukhuthala:

Kukana kwa madzi ku kayendedwe ka madzi kumatanthauzidwa ngati kuchuluka kwa kupsinjika komwe kumafunikira pa 25 px 2 plane pamene madziwo akuyenda pa liwiro la 25 px/s, lotchedwa kinematic viscosity, mu Pa.s.
Kukhuthala ndi chizindikiro cha madzi. Madzi akamayenda muipi, pamakhala mitundu itatu ya kuyenda kwa laminar, kuyenda kwa transitional, ndi kuyenda kwa turbulent. Mitundu itatu iyi ya kuyenda imapezekanso mu zida zosakaniza, ndipo chimodzi mwa zinthu zazikulu zomwe zimatsimikiza izi ndi kukhuthala kwa madzi.
Pa nthawi yosakaniza, nthawi zambiri amaganiziridwa kuti kukhuthala kumakhala kochepera 5 Pa.s ndi madzi otsika kukhuthala, monga: madzi, mafuta a castor, shuga, jamu, uchi, mafuta opaka, emulsion yotsika kukhuthala, ndi zina zotero; 5-50 Pas ndi madzi okhuthala apakatikati Mwachitsanzo: inki, mankhwala otsukira mano, ndi zina zotero; 50-500 Pas ndi madzi otsika kukhuthala, monga kutafuna chingamu, plastisol, mafuta olimba, ndi zina zotero; Pas zoposa 500 ndi madzi otsika kukhuthala monga: zosakaniza za rabara, zosungunuka za pulasitiki, organic Silicon ndi zina zotero.

2, kukula kwa tinthu tating'onoting'ono D50:

Kukula kwa tinthu tating'onoting'ono ndi 50% potengera kuchuluka kwa tinthu tating'onoting'ono tomwe tili mu slurry.

3, zinthu zolimba:

Chiwerengero cha zinthu zolimba mu slurry, chiŵerengero cha chiphunzitso cha zinthu zolimba ndi chocheperapo kuposa zinthu zolimba zomwe zatumizidwa.

Chachinayi, muyeso wa zotsatira zosakanikirana

Njira yodziwira kufanana kwa kusakaniza ndi kusakaniza kwa makina osungunula olimba ndi madzi:

1, muyeso wolunjika

1) Njira yoyezera kukhuthala: kuyesa zitsanzo kuchokera m'malo osiyanasiyana a dongosolo, kuyeza kukhuthala kwa slurry ndi viscometer; kupotoka kochepa, kusakaniza kumakhala kofanana;

2) Njira ya tinthu:

A, kutengera zitsanzo kuchokera m'malo osiyanasiyana a dongosololi, pogwiritsa ntchito chotsukira kukula kwa tinthu kuti tiwone kukula kwa tinthu tating'onoting'ono ta slurry; kukula kwa tinthu tating'onoting'ono kukakhala pafupi ndi kukula kwa ufa wa zinthu zopangira, kusakaniza kumakhala kofanana;

B, kutengera zitsanzo kuchokera m'malo osiyanasiyana a dongosololi, pogwiritsa ntchito laser diffraction particle size tester kuti aone kukula kwa tinthu tating'onoting'ono ta slurry; kugawa kwa tinthu tating'onoting'ono kwambiri, kusakaniza kumakhala kofanana;

3) Njira yeniyeni yokoka: kutengera zitsanzo kuchokera m'malo osiyanasiyana a dongosolo, kuyeza kuchuluka kwa slurry, kupendekera kochepa, kusakaniza kumakhala kofanana kwambiri.

2. Kuyeza kosalunjika

1) Njira yogwiritsira ntchito zinthu zolimba (macroscopic): Kuyesa kuchokera m'malo osiyanasiyana a dongosolo, kutentha koyenera ndi nthawi yoyenera kuphika, kuyeza kulemera kwa gawo lolimba, kupotoka kochepa, kusakaniza kumakhala kofanana;

2) SEM/EPMA (microscopic): sampuli kuchokera m'malo osiyanasiyana a dongosolo, ikani pa substrate, ikani udzu, ndipo yang'anani tinthu kapena zinthu zomwe zili mu filimuyi mutaumitsa slurry ndi SEM (electron microscope) / EPMA (electron probe) Kugawa; (zolimba za dongosolo nthawi zambiri zimakhala zinthu zoyendetsera)

Zisanu, njira yosonkhezera anode

Mpweya wakuda woyendetsa mpweya: Umagwiritsidwa ntchito ngati chowongolera mpweya. Ntchito: Kulumikiza tinthu tating'onoting'ono ta zinthu zazikulu kuti mpweya uyende bwino.

Copolymer latex — SBR (labala ya styrene butadiene): imagwiritsidwa ntchito ngati chomangira. Dzina la mankhwala: Styrene-Butadiene copolymer latex (polystyrene butadiene latex), latex yosungunuka m'madzi, yolimba 48~50%, PH 4~7, malo ozizira -5~0 °C, malo otentha pafupifupi 100 °C, kutentha kosungirako 5~35 °C. SBR ndi anionic polymer dispersion yokhala ndi kukhazikika kwabwino kwa makina komanso magwiridwe antchito, ndipo ili ndi mphamvu yayikulu yolumikizira.

Sodium carboxymethyl cellulose (CMC) – (carboxymethyl cellulose sodium): imagwiritsidwa ntchito ngati chokhuthala komanso chokhazikika. Maonekedwe ake ndi oyera kapena achikasu floc ulusi ufa kapena ufa woyera, wopanda fungo, wopanda kukoma, wopanda poizoni; wosungunuka m'madzi ozizira kapena m'madzi otentha, kupanga gel, yankholo ndi lopanda mbali kapena la alkaline pang'ono, losasungunuka mu ethanol, ether, Chosungunulira chachilengedwe monga isopropyl alcohol kapena acetone chimasungunuka mu yankho lamadzi la 60% la ethanol kapena acetone. Ndi losasinthasintha, lokhazikika ku kuwala ndi kutentha, kukhuthala kumachepa ndi kutentha kowonjezereka, yankholo ndi lokhazikika pa pH 2 mpaka 10, PH ndi yotsika kuposa 2, zinthu zolimba zimasungunuka, ndipo pH ndi yokwera kuposa 10. Kutentha kosintha mtundu kunali 227 ° C, kutentha kwa carbonization kunali 252 ° C, ndipo mphamvu ya pamwamba ya yankho lamadzi la 2% inali 71 nm/n.

Njira yogwiritsira ntchito anode ndi kuyika ndi iyi:

 
Chachisanu ndi chimodzi, njira yogwiritsira ntchito cathode

Mpweya wakuda woyendetsa mpweya: Umagwiritsidwa ntchito ngati chowongolera mpweya. Ntchito: Kulumikiza tinthu tating'onoting'ono ta zinthu zazikulu kuti mpweya uyende bwino.

NMP (N-methylpyrrolidone): imagwiritsidwa ntchito ngati chosungunula chosakaniza. Dzina la mankhwala: N-Methyl-2-polyrrolidone, formula ya molekyulu: C5H9NO. N-methylpyrrolidone ndi madzi onunkhira pang'ono a ammonia omwe amasakanikirana ndi madzi molingana ndi momwe amagwirizanirana ndipo amasakanikirana ndi zosungunulira zonse (ethanol, acetaldehyde, ketone, aromatic hydrocarbon, ndi zina zotero). Malo otentha a 204 ° C, malo otentha a 95 ° C. NMP ndi chosungunulira cha polar aprotic chokhala ndi poizoni wochepa, malo otentha kwambiri, kusungunuka kwabwino kwambiri, kusankha bwino komanso kukhazikika. Chimagwiritsidwa ntchito kwambiri pochotsa aromatics; kuyeretsa acetylene, olefins, diolefins. Chosungunulira chomwe chimagwiritsidwa ntchito pa polima ndi sing'anga popangira polymerization chikugwiritsidwa ntchito pakampani yathu pa NMP-002-02, chokhala ndi chiyero cha >99.8%, mphamvu yakeyake ya 1.025~1.040, ndi kuchuluka kwa madzi kwa <0.005% (500ppm).

PVDF (polyvinylidene fluoride): imagwiritsidwa ntchito ngati chokhuthala komanso chomangira. Polima yoyera ya ufa wa kristalo yokhala ndi kuchuluka kwa 1.75 mpaka 1.78. Ili ndi kukana kwabwino kwambiri kwa UV komanso kukana kwa nyengo, ndipo filimu yake si yolimba komanso yosweka itayimitsidwa panja kwa zaka chimodzi kapena ziwiri. Kapangidwe ka dielectric ka polyvinylidene fluoride ndi kapadera, dielectric constant ndi yokwera kufika 6-8 (MHz ~ 60Hz), ndipo dielectric loss tangent nayonso ndi yayikulu, pafupifupi 0.02 ~ 0.2, ndipo kukana kwa voliyumu ndikotsika pang'ono, komwe ndi 2 × 1014ΩNaN. Kutentha kwake kogwiritsidwa ntchito kwa nthawi yayitali ndi -40 ° C ~ +150 ° C, mu kutentha kumeneku, polima ili ndi kachitidwe kabwino ka makina. Ili ndi kutentha kwa kusintha kwa galasi kwa -39 ° C, kutentha kwa embrittlement kwa -62 ° C kapena kuchepera, kutentha kwa kristalo kwa pafupifupi 170 ° C, ndi kutentha kwa kutentha kwa 316 ° C kapena kupitirira apo.

Njira yogwiritsira ntchito cathode stir ndi kupaka:

7. Makhalidwe a kukhuthala kwa slurry

1. Kupindika kwa kukhuthala kwa slurry ndi nthawi yosakaniza

Pamene nthawi yosakaniza ikuwonjezeka, kukhuthala kwa slurry kumakhala kokhazikika popanda kusintha (tinganene kuti slurry yafalikira mofanana).

2. Kupindika kwa kukhuthala kwa slurry ndi kutentha

Kutentha kukakwera, kukhuthala kwa slurry kumachepa, ndipo kukhuthala kumakhala kokhazikika ikafika kutentha kwina.

3. Kupindika kwa zinthu zolimba mu thanki yosamutsira madzi pakapita nthawi

Pambuyo poti matope asakanikizidwe, amaikidwa m'chitoliro chosinthira kuti apange pulasitiki yophimba. Tanki yosinthira imasakanikizidwe kuti izungulire: 25Hz (740RPM), kuzungulira: 35Hz (35RPM) kuti zitsimikizire kuti magawo a matope ndi okhazikika ndipo sasintha, kuphatikizapo zamkati. Kutentha kwa zinthu, kukhuthala ndi kuchuluka kolimba kuti zitsimikizire kufanana kwa pulasitiki yophimba.

4, kukhuthala kwa slurry ndi nthawi yozungulira