Nchịkọta nke usoro mkpali nke mma na adịghị mma electrode slurry nke lithium ion batrị

Nke mbụ, ụkpụrụ nke ịgwakọta
Site na-akpali agụba na revolving frame na-atụgharị ọ bụla ọzọ, na n'ibu nkwusioru na-eme na nọgidere na-enwe, na uka nyefe n'etiti mmiri mmiri na siri ike n'ụzọ na-eme ka ọ dịkwuo mma. A na-ekekarị mkpasu iwe siri ike na akụkụ ndị a: (1) nkwusioru nke ihe siri ike; (2) mweghachi nke irighiri ihe edoziri; (3) ntinye nke ụmụ irighiri ihe kwụsịtụrụ n'ime mmiri mmiri; (4) iji n'etiti irighiri ihe na n'etiti irighiri ihe na paddles The ike na-eme ka urughuru agglomerates chụsasịrị ma ọ bụ na-achịkwa urughuru size; (5) oke nnyefe n'etiti mmiri mmiri na siri ike.

Nke abụọ, mmetụta na-akpali akpali

Usoro nhazi n'ezie na-agwakọta ihe dị iche iche dị na slurry ọnụ na nhazi ọkọlọtọ iji kwadebe slurry iji kwado mkpuchi edo ma hụ na ịdịgidesi ike nke mpempe osisi. Ihe ndị na-emepụta ihe na-agụnye usoro ise, ya bụ: pretreatment, mixing, wetting, dissasion and flocculation of the raw materials.

Nke atọ, slurry parameters

1, viscosity:

A na-akọwa nkwụsi ike nke mmiri na-asọpụta dị ka ọnụọgụ nke nrụgide na-achọ maka ụgbọ elu 25 px 2 mgbe mmiri mmiri na-asọpụta na ọsọ nke 25 px/s, nke a na-akpọ viscosity kinematic, na Pa.s.
Viscosity bụ ihe onwunwe nke mmiri. Mgbe mmiri na-asọba na pipeline, e nwere steeti atọ nke laminar, ntụgharị mgbanwe, na mgbagwoju anya. Steeti atọ a na-asọ asọ dịkwa na akụrụngwa na-akpali akpali, na otu n'ime isi ihe na-ekpebi steeti ndị a bụ viscosity nke mmiri.
N'oge usoro mkpali, a na-ewerekarị na viscosity bụ ihe na-erughị 5 Pa.s bụ obere viscosity mmiri, dị ka: mmiri, mmanụ castor, sugar, jam, mmanụ aṅụ, mmanụ lubricating, obere viscosity emulsion, wdg; 5-50 Pas bụ mmiri viscosity ọkara dịka ọmụmaatụ: ink, ntacha eze, wdg; 50-500 Pas bụ mmiri mmiri viscosity dị elu, dị ka ịta chịngọm, plastisol, mmanụ siri ike, wdg; Ihe karịrị 500 Pa bụ mmiri mmiri nwere viscosity dị elu dị ka: ngwakọta rọba, mgbaze rọba, Silicon organic na ndị ọzọ.

2, nha urughuru D50:

The size nso nke urughuru size nke 50% site olu nke ahụ na slurry

3, ọdịnaya siri ike:

Pasent nke ihe siri ike na slurry, usoro iwu nke ọdịnaya siri ike bụ ihe na-erughị ọdịnaya siri ike nke mbupu.

Nke anọ, nha mmetụta agwakọtara

Usoro maka ịchọpụta ịdị n'otu nke ngwakọta na ngwakọta nke sistemu nkwusioru mmiri siri ike:

1, nha kpọmkwem

1) Usoro viscosity: nlele site na ọnọdụ dị iche iche nke usoro ahụ, na-atụle viscosity nke slurry na viscometer; nke nta nke di iche, ka edo ka agwakọta;

2) Usoro urughuru:

A, sample si dị iche iche ọnọdụ nke usoro, na-eji a urughuru size scraper na-edebe urughuru size nke slurry; na nso urughuru nha bụ nha nke akụrụngwa ntụ ntụ, ka edo edo na-agwakọta;

B, nlele site na ọnọdụ dị iche iche nke usoro ahụ, na-eji laser diffraction particle size tester na-edebe urughuru size nke slurry; ndị ọzọ nkịtị urughuru size nkesa, nta ka ibu ahụ, ndị ọzọ edo na Ịgwakọta;

3) Usoro ike ndọda pụrụ iche: nlele site na ọnọdụ dị iche iche nke sistemu ahụ, na-atụle njupụta nke slurry, nke pere mpe, na-ejikọta ya na otu.

2. Ntụnye na-apụtaghị ìhè

1) Usoro ọdịnaya siri ike (macroscopic): Nlere anya site na ọnọdụ dị iche iche nke usoro ahụ, mgbe okpomọkụ kwesịrị ekwesị na oge na-esi nri, na-atụle ịdị arọ nke akụkụ siri ike, nke dị ntakịrị na ntụgharị ahụ, na-ejikọta ya na otu;

2) SEM / EPMA (microscopic): sample si dị iche iche ọnọdụ nke usoro, tinye na mkpụrụ, akọrọ, na-ekiri ahụ ma ọ bụ ihe ndị dị na fim mgbe ihicha slurry site SEM (elektrọn microscope) / EPMA (electron nyocha) Nkesa ; (System solids na-abụkarị ihe nduzi)

Ise, usoro mkpali anode

Carbon ojii na-arụ ọrụ: Ejiri ya dị ka onye na-eduzi ihe. Ọrụ: Ijikọ nnukwu ihe na-arụ ọrụ iji mee ka conductivity dị mma.

Copolymer latex - SBR (styrene butadiene roba): eji dị ka ihe nkedo. Chemical aha: Styrene-Butadiene copolymer latex (polystyrene butadiene latex), mmiri soluble latex, siri ike ọdịnaya 48 ~ 50%, PH 4 ~ 7, kefriza ebe -5 ~ 0 °C, esi ebe banyere 100 °C, nchekwa okpomọkụ 5 ~ 35 Celsius C. SBR bụ anionic polymer mgbasa na ezi n'ibu kwụsie ike na operability, na nwere a elu nkekọ ike.

Sodium carboxymethyl cellulose (CMC) - (carboxymethyl cellulose sodium): eji dị ka a thickener na stabilizer. Ọdịdị na-acha ọcha ma ọ bụ na-acha odo odo floc ntụ ntụ ntụ ntụ ma ọ bụ na-acha ọcha ntụ ntụ, enweghị isi, enweghị ụtọ, na-adịghị egbu egbu; soluble na mmiri oyi ma ọ bụ mmiri ọkụ, na-akpụ a gel, ihe ngwọta na-anọpụ iche ma ọ bụ dịtụ alkaline, insoluble na ethanol, ether, Ihe mgbaze organic dị ka isopropyl mmanya ma ọ bụ acetone bụ soluble na 60% aqueous ngwọta nke ethanol ma ọ bụ acetone. Ọ bụ hygroscopic, kwụsiri ike na ìhè na okpomọkụ, viscosity na-ebelata na okpomọkụ na-arịwanye elu, ngwọta ahụ kwụsiri ike na pH 2 ruo 10, PH dị ala karịa 2, ihe siri ike na-ebuli elu, pH dị elu karịa 10. Mgbanwe mgbanwe agba bụ 227 Celsius. C, carbonization okpomọkụ bụ 252 Celsius C, na elu esemokwu nke 2% aqueous ngwọta bụ 71 nm/n.

Usoro mkpali na mkpuchi anode bụ ndị a:

 
Nke isii, cathode edemede usoro

Carbon ojii na-arụ ọrụ: Ejiri ya dị ka onye na-eduzi ihe. Ọrụ: Ijikọ nnukwu ihe na-arụ ọrụ iji mee ka conductivity dị mma.

NMP (N-methylpyrrolidone): eji dị ka ihe mgbaze na-akpali akpali. Chemical aha: N-Methyl-2-polyrrolidone, usoro ihe omimi: C5H9NO. N-methylpyrrolidone bụ mmiri mmiri na-esi ísì ụtọ nke amonia nke na-adaba na mmiri n'ụzọ ọ bụla, ọ fọrọ nke nta ka ọ bụrụ ngwakọta kpamkpam na ihe mgbaze niile (ethanol, acetaldehyde, ketone, aromatic hydrocarbon, wdg). Ebe na-esi ísì ụtọ nke 204 Celsius C, ebe ọkụ ọkụ nke 95 Celsius C. NMP bụ ihe mgbaze polar aprotic na-egbu egbu na-egbu egbu, nnukwu esi mmiri, ezigbo solubility, selectivity na kwụsie ike. A na-eji ọtụtụ ihe na-emepụta aromatics; ọcha nke acetylene, olefins, diolefins. A na-eji ihe mgbaze eji eme ihe maka polymer na usoro maka polymerization ugbu a na ụlọ ọrụ anyị maka NMP-002-02, na ịdị ọcha nke> 99.8%, otu ike ndọda nke 1.025 ~ 1.040, na ọdịnaya mmiri nke <0.005% (500ppm). ).

PVDF (polyvinylidene fluoride): eji dị ka thickener na ihe nkedo. Polymerline kristal na-acha ọcha nwere njupụta nke 1.75 ruo 1.78. Ọ nwere ezigbo nguzogide UV na nguzogide ihu igwe, ihe nkiri ya esighi ike ma gbawaa mgbe etinyere ya n'èzí otu afọ ma ọ bụ iri abụọ. The dielectric Njirimara nke polyvinylidene fluoride bụ kpọmkwem, ndị dielectric mgbe nile dị elu dị ka 6-8 (MHz ~ 60Hz), na dielectric ọnwụ tangent bụkwa nnukwu, banyere 0.02 ~ 0.2, na olu na-eguzogide dị ntakịrị ala, nke bụ 2. ×1014ΩNaN. Ogologo oge ojiji ya bụ -40 ° C ~ + 150 Celsius C, na oke okpomọkụ a, polymer nwere ezigbo ihe eji arụ ọrụ. Ọ nwere ugegbe mgbanwe okpomọkụ nke -39 Celsius C, ihe embrittlement okpomọkụ nke -62 Celsius C ma ọ bụ ihe na-erughị, kristal agbaze ebe ihe dị ka 170 Celsius C, na thermal decomposition okpomọkụ nke 316 Celsius C ma ọ bụ karịa.

Usoro ịkpali na mkpuchi cathode:

7. Viscosity e ji mara nke slurry

1. Curve nke slurry viscosity na-akpali akpali oge

Ka oge na-akpali akpali na-agbatị, viscosity nke slurry na-emekarị ka ọ bụrụ uru kwụsiri ike na-agbanweghị (enwere ike ịsị na slurry agbasasịwo n'otu n'otu).

2. Curve nke slurry viscosity na okpomọkụ

Ihe dị elu nke okpomọkụ, na-ebelata viscosity nke slurry, na viscosity na-eche na ọ bara uru mgbe ọ ruru ụfọdụ okpomọkụ.

3. Curve nke siri ike ọdịnaya nke nnyefe tank slurry na oge

Mgbe slurry na-akpali akpali, a na-agbanye ya na tank na-ebufe maka mkpuchi mkpuchi. A na-akpali tankị mbufe ka ọ gbanwee: 25Hz (740RPM), mgbanwe: 35Hz (35RPM) iji hụ na paramita nke slurry kwụsiri ike na ọ gaghị agbanwe, gụnyere pulp. Okpomọkụ ihe onwunwe, viscosity na ọdịnaya siri ike iji hụ na ịdị n'otu nke mkpuchi slurry.

4, viscosity nke slurry na oge usoro