Cathode ihe onwunwe
Na nkwadebe nke inorganic electrode ihe maka lithium ion batrị, elu okpomọkụ siri ike mmeghachi omume bụ ihe a na-ejikarị.Okpomọkụ dị elu mmeghachi omume siri ike: na-ezo aka na usoro nke ndị na-emeghachi omume gụnyere ihe ndị siri ike na-emeghachi omume ruo oge ụfọdụ n'otu ọnọdụ okpomọkụ ma na-emepụta mmeghachi omume kemịkal site na mgbasa ozi n'etiti ihe dị iche iche iji mepụta ogige ndị kasị kwụsiri ike n'otu okpomọkụ. , gụnyere mmeghachi omume siri ike, mmeghachi omume gas siri ike na mmeghachi omume mmiri siri ike.
Ọbụlagodi na a na-eji usoro sol-gel, usoro nnabata, usoro hydrothermal na usoro solvothermal, mmeghachi omume siri ike ma ọ bụ ihe siri ike na-ekpo ọkụ na-achọkarị.Nke a bụ n'ihi na ụkpụrụ na-arụ ọrụ nke batrị lithium-ion batrị chọrọ ka ihe electrode ya nwere ike itinye ugboro ugboro ma wepụ li +, ya mere nhazi ya ga-enwe nkwụsi ike zuru oke, nke na-achọ ka kristal nke ihe na-arụ ọrụ kwesịrị ịdị elu na nhazi kristal kwesịrị ịdị mgbe niile. .Nke a siri ike nweta n'okpuru ọnọdụ okpomọkụ dị ala, ya mere, ihe electrode nke batrị lithium-ion a na-eji eme ihe ugbu a na-enweta site na mmeghachi omume siri ike nke okpomọkụ.
The cathode ihe nhazi usoro mmepụta nke tumadi gụnyere ịgwakọta usoro, sintering usoro, etipịakwa usoro, mmiri ịsacha usoro (naanị elu nickel), nkwakọ usoro, ntụ ntụ ebu usoro na ọgụgụ isi akara usoro.
Mgbe a na-eji usoro ngwakọta mmiri na-emepụta ihe nke cathode maka batrị lithium-ion, a na-ezutekarị nsogbu ihicha.Ihe mgbaze dị iche iche a na-eji na-eme ka mmiri na-agwakọta mmiri ga-eduga na usoro ihicha na akụrụngwa dị iche iche.Ka ọ dị ugbu a, a na-enwekarị ụdị ihe mgbaze abụọ a na-eji na usoro ngwakọta mmiri: ihe ndị na-adịghị mmiri mmiri, ya bụ ihe mgbaze organic dị ka ethanol, acetone, wdg;Ihe mgbaze mmiri.Ngwa ihicha maka ịgwakọta mmiri nke lithium-ion batrị cathode ihe na-agụnyekarị: vacuum rotary dryer, vacuum rake dryer, spray dryer, vacuum belt dryer.
Mmepụta ụlọ ọrụ nke ihe cathode maka batrị lithium-ion na-anabatakarị usoro ikpo ọkụ steeti siri ike, yana isi na akụrụngwa ya bụ ịgbanye ọkụ.A na-agwakọta akụrụngwa maka imepụta ihe batrị lithium-ion batrị cathode n'otu n'otu wee kpoo ya, wee tinye ya na kiln maka ịgbanye, wee bupụ ya na kiln n'ime usoro ngwepịa na nhazi ọkwa.Maka mmepụta nke ihe cathode, ndị na-egosi nkà na ụzụ na akụ na ụba dị ka okpomọkụ na-achịkwa okpomọkụ, ịdị n'otu okpomọkụ, njikwa ikuku na ịdị n'otu, ịga n'ihu, ikike mmepụta, ike ike na akara akpaaka nke kiln dị ezigbo mkpa.Ka ọ dị ugbu a, isi ihe eji eme ihe na-emepụta ihe na-emepụta cathode bụ ọkpọ ọkpọ, igwe rola na ọkụ mgbịrịgba.
◼ Roller kiln bụ ebe a na-adọba ụgbọala nwere nnukwu ọkụ na-ekpo ọkụ na-aga n'ihu.
◼ Dị ka ikuku ọkụ si dị, dị ka ebe a na-akwagharị ihe, a na-ekewakwa ihe mkpuchi ikuku na ikuku ikuku.
- Igwe ikuku: nke a na-ejikarị eme ihe ndị na-achọ ikuku ikuku, dị ka ihe lithium manganate, ihe lithium cobalt oxide, ihe ternary, wdg;
- Kiln ikuku: a na-ejikarị eme ihe maka ihe ndị dị na NCA, ihe lithium iron phosphate (LFP), ihe graphite anode na ihe ndị ọzọ na-eme ka ikuku dị mkpa (dịka N2 ma ọ bụ O2) nchebe gas.
◼ Igwe igwe na-agbagharị agbagharị na-anabata usoro esemokwu ntụgharị, yabụ ike na-ebugharị agaghị emetụta ogologo nke kiln.N'echiche, ọ nwere ike ịbụ enweghị njedebe.Ihe e ji mara nke oghere kiln, ka mma na-agbanwe agbanwe mgbe ị na-agbapụ ngwaahịa, na nnukwu oghere nke kiln na-eme ka mmegharị nke ikuku na-asọba na ọkụ ọkụ na nkwụsị na nkwụsị roba nke ngwaahịa.Ọ bụ akụrụngwa kachasị amasị iji dochie kiln pusher iji nweta mmepụta buru ibu n'ezie.
◼ Ka ọ dị ugbu a, a na-agbanye lithium cobalt oxide, ternary, lithium manganate na ihe ndị ọzọ cathode nke batrị lithium-ion n'ime igwe ikuku ikuku, ebe lithium iron phosphate na-agbanye n'ime igwe mkpuchi nke nitrogen na-echebe, na NCA na-agbanye na rola. kil na-echebe site na oxygen.
Ihe na-adịghị mma Electrode
Isi nzọụkwụ nke isi usoro eruba nke artificial graphite gụnyere pretreatment, pyrolysis, egweri bọl, graphitization (ya bụ, okpomọkụ ọgwụgwọ, nke mere na mbụ disordered carbon atọm na-ahaziri neatly, na isi oru njikọ), agwakọta, mkpuchi, ịgwakọta. nyocha, itule, nkwakọ ngwaahịa na nkwakọba ihe.Ọrụ niile dị mma na mgbagwoju anya.
◼ A na-ekewa granulation n'ime usoro pyrolysis na usoro nyocha igwe igwe.
N'ime usoro pyrolysis, tinye ihe dị n'etiti 1 n'ime reactor, dochie ikuku na reactor na N2, mechie reactor, kpoo ya ọkụ dị ka usoro okpomọkụ si dị, kpalie ya na 200 ~ 300 ℃ maka 1 ~ 3h, wee gaa n'ihu. iji kpoo ya na 400 ~ 500 ℃, kpalie ya iji nweta ihe nwere urughuru nha nke 10 ~ 20mm, belata okpomọkụ ma hapụ ya ka ọ nweta ihe dị n'etiti 2. E nwere ụdị ngwá ọrụ abụọ na-eji na usoro pyrolysis, vetikal reactor na-aga n'ihu. akụrụngwa granulation, nke abụọ nwere otu ụkpụrụ.Ha abụọ na-akpali ma ọ bụ na-agagharị n'okpuru ọnọdụ okpomọkụ iji gbanwee ihe mejupụtara ya na ihe anụ ahụ na kemịkal dị na reactor.Ihe dị iche bụ na ketulu kwụ ọtọ bụ ụdị ngwakọta nke ketulu ọkụ na ketulu oyi.A na-agbanwe ihe ndị dị na kettle site n'ịkpali dịka ọnọdụ okpomọkụ dị na kettle ọkụ.Mgbe emechara ya, a na-etinye ya na kettle jụrụ oyi maka oyi, a pụkwara inye nri ọkụ ọkụ.Na-aga n'ihu granulation akụrụngwa na-aghọta na-aga n'ihu na-arụ ọrụ, na obere ume oriri na elu mmepụta.
◼ Carbonization na graphitization bụ akụkụ dị mkpa.Igwe ọkụ carbonization carbonizes ihe ndị dị na ọkara na obere okpomọkụ.Okpomọkụ nke ọkụ carbonization nwere ike iru ogo Celsius 1600, nke nwere ike gboo mkpa carbonization.Onye na-ahụ maka okpomọkụ nwere ọgụgụ isi dị elu na sistemụ nlekota PLC na-akpaghị aka ga-eme ka data emepụtara na usoro carbonization na-achịkwa nke ọma.
Igwe ọkụ eserese, gụnyere okpomọkụ dị elu kwụ ọtọ, mwepu ala, vetikal, wdg, na-etinye graphite na mpaghara ọkụ graphite (carbon nwere gburugburu) maka ịgbaze na ịgbaze, na okpomọkụ n'oge a nwere ike iru 3200 ℃.
◼ mkpuchi
A na-ebufe ihe dị n'etiti 4 na silo site na usoro nnyefe akpaka, na-emejupụta ihe ahụ na-akpaghị aka na igbe promethium site na onye na-eme ihe.Usoro mbufe akpaka na-ebufe igbe promethium gaa na reactor na-aga n'ihu (roller kiln) maka mkpuchi, nweta ihe dị n'etiti 5 (n'okpuru nchebe nke nitrogen, ihe ahụ na-ekpo ọkụ na 1150 ℃ dị ka usoro ịrị elu okpomọkụ maka 8 ~ 10h). Usoro ikpo ọkụ bụ ikpo ọkụ ngwa ngwa site na ọkụ eletrik, usoro ikpo ọkụ na-atụgharịkwa asphalt dị elu n'elu ihe ndị dị na graphite n'ime mkpuchi carbon pyrolytic N'oge usoro kpo oku, resins na asphalt dị elu condense, na kristal morphology na-agbanwe (amorphous ala na-agbanwe ghọọ crystalline steeti), Otu nyere iwu microcrystalline carbon oyi akwa na-guzobere n'elu eke spherical graphite ahụ, na n'ikpeazụ a ntekwasa graphite dị ka ihe na a "isi-shell" Ọdịdị bụ. nwetara