1.Txhua cov khoom tseem ceeb hauv cov roj teeb lithium-ion hauv cov roj teeb tam sim no, thiab nws tau zoo dua li cas zoo li tooj liab?
①Electrochemical Ruaj khov nyob rau hauv lub siab-voltage ib puag ncig
Aluminum forms a thin, self-passivating oxide layer (Al₂O₃) that resists corrosion at the high operating potentials of cathodes (3–4.5 V vs. Li/Li⁺), unlike copper, which oxidizes and degrades at >3 V. Qhov no ua rau txhuas tsis tseem ceeb rauCathode Cov neeg sau khoom tam sim noHauv cov roj teeb lithium-ion (piv txwv li, lifepo₄, NMC) 12.
②Kev hnyav thiab cov nqi-efficiency
Aluminium lub ntom ntom (2.7 g \/ cm³) yog60% qis duaTshaj Copper (8.96 g \/ cm³), txo cov roj teeb qhov hnyav rau EVS thiab Portable Cov Khoom Siv Hluav Taws Xob. Nws tseem3-5x pheej yig duaTshaj tooj tooj liab, txo qis cov nqi rau cov roj teeb loj34.
③Tsim hluav taws xob daws teeb meem
Thaum tuav txhuas kev ua tiav (~ 35 ms \/ m) yog qis dua tooj liab lub (~ 59 ms \/ m), nws tseem nyob ceev ceev qhov xav tau piv rau anodes. Advanced nto kev kho kom zoo (piv txwv li, carbon-coated al ntawv ci) ntxiv txhim kho hauv hluav taws xob hloov efficolicy51.
④Kev sib xyaw nrog cov ntaub ntawv Cathode
Txhuas cov nyiaj txhiv ua tau zoo nrog cov Cathoo cov txheej txheem (piv txwv li, LICOO₂, NMC) tsis muaj kev sib haum xeeb cuam tshuam. Hauv kev sib piv, Tooj liab reacts nrog lithium ntawm anode, tas nws siv tsuas yog ntawm anode sab (nrog cov ntaub ntawv hauv graphite (nrog cov ntaub ntawv \/ cov ntaub ntawv xov xwm) 25.
⑤NEEG KHO TSHUAB GRLEASTAIS THIAB RAUG RAUG RAUG
Aluminium ntawv (10-20 μm tuab) muaj kev ductility zoo rau yob-rau-yob electrode ua. Nrhav zoo liMicro-roughened al foilsTxhim Kho Adhesion ntawm Cathoure slurries, txo cov kev pheej hmoo txaus ntshai thaum lub sijhawm them \/ tso tawm.
2. Nws lub luag haujlwm ua si zoo li cas hauv kev txhim kho lub zog ntom thiab cov cua sov ntawm cov roj teeb niaj hnub (piv txwv li roj teeb?
①Hnav cov neeg sau nyiaj tam sim no rau lub zog siab dua
Aluminium Ntawv Nyiaj (piv txwv li,AA1XXX XWM) Yog siv raws li catrede tam sim no cov roj teeb vim nws qhov ntom ntom nti (2.7 g \/ cm³) thiab hluav taws xob zoo. Hloov cov ntaub ntawv hnyav txo cov roj teeb hnyav, txhim kho gravimetric lub zog ntawj (~ 15-20% nce) thaum tswj cov qauv txheej txheem kev sib sau ua ke12.
②Thermal conductivity rau kev ua tau zoo cua sov dissipation
Aluminium lub thermal conductivity (~ 237 w \/ math Nyob rau hauv ev pob, extruded txhuas txias channel lossis cov phaj txias tswj cell kub, tiv thaiv thermal khiav thiab txuas lub voj voog lub neej34.
③Kev koom ua ke rau kev tsim qauv
Aluminium alloys (piv txwv li,6xXX Series) Tsim lub teeb yuag, muaj zog roj teeb hluav taws xob siab. Tesla cov txheej txheem roj teeb sib xyaw ua ke txhuas kev siv lub zog, txo qhov chaw tuag thiab tso cov khoom siv ntau ntxiv, txhawb qhov volumetric zog density5.
④Corrosion-resistant nto kev kho mob
Anodized lossis coated txhuas (piv txwv li,Al-ni composites) Mitigates Decradation los ntawm electrolytes, kom ua tau ruaj khov ua tau zoo nyob rau hauv high-voltage Systems. Qhov kev tswj hwm no tsis sib haum xeeb dhau lub sijhawm los ntawm kev txo qis kev loj hlob ntawm electrode interfaces24.
⑤Alloy nrhav loj rau kev txhim kho thermal
High-conductivity alloys zoo liAl-Si-mg (AA6061)Yog siv hauv kua-txias thermal interfaces. Adillitive manufacturing ua rau 3D-luam tawm txhuas lub dab dej nrog cov kev faib tawm cov qauv kev ua kom zoo, txhim kho cov roj teeb tshem tawm.
3.Qhov kev sib tw tshwm sim los ntawm txhuas yog kev sib txawv thiab kev xeb hauv aqueous lossis high-voltage roj teeb caterabistries, thiab li cas cov mitigated no?
①electrrochemical corrosion nyob rau aqueous electrolytes
Cav: Aluminium reacts nrog aqueous electrolytes (piv txwv li cov roj teeb al-cua
Me quav: Siv cov alkaline inhibitors (piv txwv li, zno, sno₂) lossis organic ntxiv (piv txwv li cov tshuaj organic (piv txwv li urea) mus tshem tawm cov kab txhuas aluminium.
②Pitt Corrosion hauv Chloride Ib puag ncig
Cav: Chloride ions (piv txwv li, roj teeb Seater dej)
Me quav: Thov kev tiv thaiv kev tiv thaiv xws li graphene oxide txheej lossis anodized aluminium oxide (AAO) txhawm rau thaiv cov chloride foretration).
③High-voltage oxidation thiab passivation
Cav: At voltages >3 v (vs. Li \/ Li⁺), Txhuas cov foos insulating oxide txheej (al₂o₃), muaj kev cuam tshuam loj interfacial nyob rau hauv Li-ion roj teeb Cov neeg khaws khoom tam sim no.
Me quav: Siv cov ntaub lag luam tshwj xeeb (piv txwv li, al-mg, al-cu) lossis carbon-coated aluminium foils kom tau txais hluav taws xob thauj thaum lim cov oxidation51.
④Galvanic corrosion hauv cov tshuab hlau ntau
Cav: Hu rau ncaj qha ntawm txhuas thiab ntau cov hlau nplaum (xws li tooj liab hauv cov electrodes) tsim cov pob zeb hauv galvanic, nrawm nrawm txhuas txhuas cov kab ke.
Me quav: Qhia insulating interlayers (xws li, polymer zaj duab xis) lossis hloov tooj liab nrog cov hlau sib xyaw (xws li titanium) hauv hybrid tsim tawm24.
⑤Kev tawm tus kheej rau cov roj teeb txhuas-cua roj teeb
Cav: Aluminium corrodes nthawv nyob rau hauv electrolytes thaum lub sijhawm kaw, ua rau ploj lub zog thiab lub neej luv.
Me quav: Txhim kho electrolyte muaj pes tsawg leeg (piv txwv li cov kua ionic tsis yog cov tshuaj aqueous) lossis tsim cov tshuaj aoodes (piv txwv li alloks) los txo cov qib siab.
4.How yog aluminium-alloys alloys los yog txheej (piv txwv li, al-ni, al-c-c composites) tau ua rau roj teeb txuas ntxiv rau cov roj teeb tom ntej?
①Aluminium doping rau Cathode kev ruaj khov
Kev sib xyaw ua ke txhuas (piv txwv li, co-doping) rau hauv npib tsib xee nyob hauv aqueous detradation, txo kev cuam tshuam los ntawm alkaline electrolytes1.
②Al-Ni alloys li catalytic txhawb nqa
Nickel-aluminium alloys (piv txwv li, raney ni-al) txhim kho catalytic kev ua si, txhim kho redox kinetic rau cov electrodes hauv hybrid systems lossis roj cell systems3.
③Al-Hloov Txheej Txheem Oxides rau Sodium-ion roj teeb
Hloov Ni nrog Al nyob rau hauv Na-₂ \/ ₃mn₁ \/ ₂o ₂ Txawb cov qauv, thiab mitigates cation redins, ua tiav cov peev xwm ntau dua thiab voj voog stability7.
④Al₂o₃ cov txheej txheej nto rau MN Black Classed
Daim txheej Cathodes nrog al₂o₃ minimization Mn Mn kev sib cais hauv Sodium-ion roj teeb thaum caij tsheb kauj vab, khaws cov txheej txheem kev ncaj ncees thiab txuas ntxiv lub neej.
⑤Ze-eutectic al alloys rau kev siv tshuab kub siab
Additively Manufactured al-Ni-Mn-ZR Alloys tsim ntawm 400 degree rau cov khoom siv roj teeb lossis electrode txhawb nqa.
5.Txawm txoj hauv kev li cas aluminium roj teeb tus xeeb roj txhuas altrochemical cov khoom rau cov peev txheej muaj zog rau kev lag luam siab?
①Anode corrosion thiab tus kheej tawm
Aluminium reacts nthawv nrog dej hauv electrolyte, tsim kom muaj hydrogen roj thiab ua rauParasitic Corrosion(Txog 20% poob thaum lub sijhawm cia). Kev tiv thaiv txheej txheem (piv txwv li, mg-sn lossis ga-in allots) mitisate no tab sis ntxiv cov nyom thiab tus nqi.
②Cathohod txwv thiab cov nqi catalyst
Kev txo cov pa oxygen yuav tsum tau kim catalysts zoo li platinum lossis manganese oxide kom muaj kev ua tau zoo. Kev xaiv pheej yig dua (piv txwv li, cov carbon-based catalysts) raug kev txom nyem sai sai, txo lub voj voog ua haujlwm24.
③Kev Tswj Xyuas Electrolyte
Broproducts zoo li txhuas hydroxide (al (Oh) ₃) precipate thaum tso hluav taws xob, xav tau cov hluav taws xob ua ntu zus electrolyte. Ntws nruab nrab hais qhov no tab sis nce nyuaj5.
④Tsawg dua kev siv hluav taws xob
Feem ntau aluminium-cua roj teeb yogtseem ceeb(Kev siv ib leeg) vim yog kev txwv tsis pub dhau ntawm txhuas oxidation. Rechargeable Prootypes ntsej muag lub ntsej muag qis qis-trip efficiency (<50%) and short cycle life (<100 cycles), hindering adoption in EVs14.
⑤Cov Cuab Yeej Siv Hluav Taws Xob Thiab Cov Cua Txiav
Tsis muaj cov khoom siv muab cov khoom sib txuas rau txhuas (piv txwv li, huab cua cathodes), thiab kev rov ua dua tshiab rau cov roj electrolytes nyob rau hauv underdeveloped. High Upfront R & D cov nqi kho teeb pawg ntau lawm.
