Inshamake yuburyo bukangura bwa electrode nziza kandi mbi ya batiri ya lithium ion

Icya mbere, ihame ryo kuvanga
Mugukangura ibyuma hamwe nikintu kizunguruka kugirango kizungurukane, ihagarikwa ryimashini rirakorwa kandi rigakomeza, kandi ihererekanyabubasha hagati yibyuma nibice bikomeye byongerewe imbaraga. Ubukangurambaga bukomeye-busanzwe bugabanijwemo ibice bikurikira: (1) guhagarika ibice bikomeye; (2) guhagarika ibice byakemuwe; (3) gucengera ibice byahagaritswe mumazi; . (5) ihererekanyabubasha hagati yamazi kandi akomeye.

Icya kabiri, ingaruka zikangura

Igikorwa cyo guteranya mubyukuri kivanga ibice bitandukanye mubitereko hamwe mukigereranyo gisanzwe kugirango bategure igituba kugirango borohereze umwenda umwe kandi barebe ko ibice bya pole bihoraho. Ibigize muri rusange bigizwe nuburyo butanu, aribwo: kwitegura, kuvanga, guhanagura, gutatanya no gukwirakwiza ibikoresho fatizo.

Icya gatatu, ibipimo bya slurry

1, ubwiza:

Kurwanya amazi gutemba bisobanurwa nkubunini bwikibazo cyogusabwa kuri indege ya 25 px 2 mugihe ayo mazi atemba ku gipimo cya 25 px / s, bita viscosity ya kinematike, muri Pa.
Viscosity ni umutungo wamazi. Iyo amazi atemba mumuyoboro, habaho ibintu bitatu byamazi ya laminari, imigezi yinzibacyuho, hamwe n’imivurungano. Ibi bintu bitatu bitemba nabyo biboneka mubikoresho bikurura, kandi kimwe mubintu nyamukuru bigena izi leta ni ubwiza bwamazi.
Mugihe cyo gukangura, muri rusange bifatwa ko ubukonje buri munsi ya 5 Pa.s ni amazi make ya viscosity, nka: amazi, amavuta ya castor, isukari, jama, ubuki, amavuta yo kwisiga, emuliyoni nkeya, nibindi.; 5-50 Pas ni amazi yo mu bwoko bwa viscosity yo hagati Urugero: wino, umuti wamenyo, nibindi.; 50-500 Pas ni amazi menshi ya viscosity, nka chewine, plastisol, lisansi ikomeye, nibindi.; ibirenga 500 Pas ni amazi menshi yijimye cyane nka: imvange ya reberi, gushonga kwa pulasitike, Silicon kama nibindi.

2, ingano ya D50:

Ingano yubunini bwa 50% nubunini bwibice muri slurry

3, ibintu bikomeye:

Ijanisha ryibintu bikomeye muburyo bworoshye, igipimo cya theoretical yibintu bikomeye ntabwo kiri munsi yibintu byoherejwe

Icya kane, igipimo cyingaruka zivanze

Uburyo bwo kumenya uburinganire bwo kuvanga no kuvanga sisitemu ikomeye yo guhagarika:

1, gupima mu buryo butaziguye

1) Uburyo bwa Viscosity: gutoranya uhereye kumyanya itandukanye ya sisitemu, gupima ububobere bwa slurry hamwe na viscometer; ntoya gutandukana, nuburyo bumwe bwo kuvanga;

2) Uburyo bwihariye:

A, icyitegererezo uhereye kumyanya itandukanye ya sisitemu, ukoresheje ingano yubunini bwa scraper kugirango urebe ingano yubunini bwa slurry; uko ingano yingingo zingana nubunini bwifu yibikoresho, niko kuvanga kimwe;

B, icyitegererezo uhereye kumyanya itandukanye ya sisitemu, ukoresheje ibipimo bya laser bitandukanya ubunini bwa tester kugirango urebe ingano yubunini bwa slurry; uko bisanzwe ibisanzwe ingano yikwirakwizwa, ntoya nini nini, niko kuvanga kimwe;

3) Uburyo bwihariye bwa rukuruzi: gutoranya uhereye kumyanya itandukanye ya sisitemu, gupima ubucucike bwibisebe, uko gutandukana guto, niko kuvanga ari kimwe

2. Ibipimo bitaziguye

1) Uburyo bukomeye bwibintu (macroscopic): Gutoranya uhereye kumyanya itandukanye ya sisitemu, nyuma yubushyuhe bukwiye nigihe cyo guteka, gupima uburemere bwigice gikomeye, gutandukana guto, niko kuvanga ari kimwe;

) ; (sisitemu ikomeye ni ibikoresho byuyobora)

Gatanu, anode ikangura

Umuyoboro wa karubone wirabura: Ikoreshwa nkumukozi uyobora. Imikorere: Guhuza ibice binini bifatika kugirango ibintu bigende neza.

Copolymer latex - SBR (styrene butadiene rubber): ikoreshwa nka binder. Izina ryimiti: Styrene-Butadiene copolymer latex (polystyrene butadiene latex), amazi-soluble latex, ibintu bikomeye 48 ~ 50%, PH 4 ~ 7, ingingo ikonjesha -5 ~ 0 ° C, aho itetse nka 100 ° C, ubushyuhe bwo kubika 5 ~ 35 ° C. SBR ni anionic polymer ikwirakwiza hamwe nubukanishi bwiza bwimikorere kandi ikora, kandi ifite imbaraga zingana.

Sodium carboxymethyl selulose (CMC) - (carboxymethyl selulose sodium): ikoreshwa nkibyimbye na stabilisateur. Kugaragara ni ifu ya fibre yera cyangwa umuhondo cyangwa ifu yera, impumuro nziza, uburyohe, ntabwo ari uburozi; gushonga mumazi akonje cyangwa mumazi ashyushye, bikora gel, igisubizo ntaho kibogamiye cyangwa alkaline nkeya, ntigishobora gushonga muri Ethanol, ether, Umuti ukomoka kuri organic nka alcool ya isopropyl cyangwa acetone ushonga mumuti wa 60% wamazi ya Ethanol cyangwa acetone. Ni hygroscopique, ihamye kumucyo nubushyuhe, ubukonje bugabanuka hamwe nubushyuhe bwiyongera, igisubizo gihamye kuri pH 2 kugeza 10, PH iri munsi ya 2, ibinini biragwa, kandi pH iri hejuru ya 10. Ubushyuhe bwo guhindura ibara bwari 227 ° C, ubushyuhe bwa karubone bwari 252 ° C, naho hejuru yubushyuhe bwumuti wa 2% ni 71 nm / n.

Inzira ya anode ikurura no gutwikira nuburyo bukurikira:

 
Icya gatandatu, cathode ikangura inzira

Umuyoboro wa karubone wirabura: Ikoreshwa nkumukozi uyobora. Imikorere: Guhuza ibice binini bifatika kugirango ibintu bigende neza.

NMP (N-methylpyrrolidone): ikoreshwa nkumuti ukurura. Izina ryimiti: N-Methyl-2-polyrrolidone, formula ya molekile: C5H9NO. N. Ahantu ho gutekera 204 ° C, flash point ya 95 ° C. NMP ni umusemburo wa polar aprotic ufite uburozi buke, ahantu hatetse cyane, gukemura neza, guhitamo no gutuza. Byakoreshejwe cyane mugukuramo aromatics; kweza acetylene, olefine, diolefine. Umuti ukoreshwa kuri polymer hamwe nuburyo bwo gukoresha polymerisation kuri ubu ukoreshwa muri sosiyete yacu kuri NMP-002-02, ufite ubuziranenge bwa> 99.8%, uburemere bwihariye bwa 1.025 ~ 1.040, hamwe n’amazi arimo <0.005% (500ppm) ).

PVDF (fluoride polyvinylidene): ikoreshwa nkibyimbye na binder. Ifu yera ya kristalline polymer ifite ubucucike bwa 1.75 kugeza 1.78. Ifite UV irwanya cyane kandi irwanya ikirere, kandi firime yayo ntago igoye kandi yacitse nyuma yo gushyirwa hanze mumyaka mirongo ibiri cyangwa ibiri. Imiterere ya dielectric ya fluoride ya polyvinylidene irihariye, ihoraho ya dielectric iri hejuru ya 6-8 (MHz ~ 60Hz), kandi igihombo cya dielectric nacyo kinini, hafi 0.02 ~ 0.2, kandi kurwanya amajwi biri hasi gato, ni 2 × 1014ΩNaN. Ubushyuhe bwigihe kirekire bwo gukoresha ni -40 ° C ~ +150 ° C, murubu bushyuhe, polymer ifite imiterere yubukanishi. Ifite ubushyuhe bwikirahure bwa -39 ° C, ubushyuhe bwa dogere -62 ° C cyangwa munsi yayo, aho gushonga kristu igera kuri 170 ° C, nubushyuhe bwumuriro bwa 316 ° C cyangwa burenga.

Cathode ikangura no gutwikira:

7. Ibiranga ubukonje biranga gusebanya

1. Gukata umurongo wijimye hamwe nigihe gikurura

Mugihe igihe cyo gukangura cyongerewe, ubwiza bwibisebe bukunda kuba agaciro gahamye udahindutse (birashobora kuvugwa ko igituba cyatatanye kimwe).

2. Umurongo wijimye wijimye hamwe nubushyuhe

Ubushyuhe buri hejuru, niko igabanuka ryijimye rya slurry, kandi viscosity ikunda agaciro gahamye iyo igeze kubushyuhe runaka.

3. Umurongo wibintu bikomeye bya transfert yoherejwe hamwe nigihe

Iyo ibishishwa bimaze gukangurwa, bishyirwa mu kigega cyo kohereza Coater coating. Ikigega cyo kohereza gikangurwa kugirango kizunguruke: 25Hz (740RPM), impinduramatwara: 35Hz (35RPM) kugirango harebwe niba ibipimo bya slurry bihamye kandi bitazahinduka, harimo na pulp. Ubushyuhe bwibintu, ibishishwa hamwe nibintu bikomeye kugirango harebwe uburinganire bwimyenda.

4, ibishishwa bya slurry hamwe nigihe cyo guta