Kuv {. tus yam ntxwv thiab cov txiaj ntsig ntawm polyacrylate (PAA) Binders
Tsawg tsawg o hauv electrolyte cov kuab tshuaj: kev ua kom muaj kev kub me, tswj cov qauv txheej txheem ntawm electrode thaum them / tawm mus ncig ua si .
Siab sib faib ntawm cov pab pawg carboxyl: lub siab ntom ntawm polar Cargyl pawg muaj zog nrog hydroxyl-muaj cov ntaub ntawv siv hydroxyl-muaj cov khoom siv hydroxyl-muaj cov khoom siv hydroxyl-muaj cov khoom siv.
Nruam zaj duab xis tsim: tsim cov yeeb yaj kiab tsis sib xws rau cov khoom siv cov khoom siv, txhim kho kev sib chwv ntawm cov ntaub ntawv thiab cov neeg sau tam sim no.
Cov tshuab ua haujlwm zoo heev: Cov txheej txheem yooj yim ntawm kev ua thaum lub electrode manufacturing .
Txhim kho SEI tsim thiab kev ua haujlwm cycling: lub siab kev sib txuam ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob nrog cov khoom siv hluav taws xob ruaj khov nrog kev sib xyaw ua ke .
II {.} Kev Loj Hlob Cov Kev Sib Tw
Paa (polyacrylic) berder tshuab rau hluav taws xob paa-} Nws ruaj khov rau cov qauv hluav taws xob hauv kev sib cais, ua kom muaj kev sib cais ntawm cov ntaub ntawv nquag, thiab txuas ntxiv rau cov ntawv electrode nyiaj nqa lifespan.
Txawm li cas los xij, cov pab pawg polar ua haujlwm pab txhawb kev sib txuas ntev ntawm cov saw hlau, ua kom muaj kev ntxhov siab rau cov khoom siv hluav taws xob tsis zoo dhuav cov txheej txheem ntawm tes cua tshuab cua tshuab, thiab thaum kawg txwv kev txhim kho hauv roj teeb electrochemical kev kawm {}}
Iii {. Kev Tshawb Fawb Kev Ua Haujlwm hauv cov kev siv roj teeb-qib PAA
{{01.} Sodium-Ion Roj Teeb Zog Cov PowerBon Anodes
Cov tuam txhab uas tsim muaj roj carbon had rau sodium-ion roj teeb uas yuav tsum muaj nyob rau ntawm cov qauv txheej txheem ntawm cov khoom siv nyiaj txiag ntawm lub zog
Nyob rau hauv lub rooj zaum tam sim no paa anode kev pheej hmoo, muaj kev cuam tshuam nrog kev pheej hmoo sab hauv
Cov electrochemical kev ua tau zoo, kev ua haujlwm, ib puag ncig kev yoog tau, ncaj qha rau cov khoom lag luam zoo tshaj plaws ntawm cov khoom lag luam zoo kawg nkaus
Dhau qhov kev nkag siab, cov ntaub ntawv siv tau tsom rau kev ua haujlwm zoo xws li cov ntsiab lus tsis zoo, thiab phy cov ntsiab lus ntawm cov khoom ua haujlwm ntawm lub zog carbon anode .
2.}-based anodes
Silicon raws li Lithium-Ii lub peev txheej muaj qhov muaj peev xwm sib txawv ntawm cov khoom sib txawv thiab kev ua kom loj dua yog qhov sib txawv rau kev txhim kho silicon anode kev ruaj khov . kev tshawb fawb siv carboxymethyl cellulose (cmsc) thiab polyvinylidene fluoride (PVDF) binders {}}
Lub cev tseem ceeb ntawm kev sim tshawb fawb tias Paa muaj cov cuab yeej siv cov khoom siv tshuab piv rau SICTOKS, xa cov khoom lag luam zoo tshaj plaws.
Kev tshawb fawb txuas ntxiv pom tias muaj txiaj ntsig zoo ntawm cov txheej txheem carbon txheej ntawm anode stability {}}}}}} {} Kev tshawb pom qhib txoj haujlwm tshiab rau kev tshawb nrhiav cov tshiab binders zoo li cov dej cawv polyvinyl (pva) series.
Crosslinking paa nrog lwm cov ntaub ntawv sawv cev rau kev txhim kho tshiab, nrog rau cov kab ke ntawm AA-PANC sib txuas, thiab Edta-Paa binders {}}
3. pva-g-paa (PVA-grafted-paa)
Ib qho kev haus dej tshiab-soluble, PVA-G-PAA, yog cov khoom siv hluav taws xob hloov kho cov pa hluav taws xob hauv PVA thaum siv cov khoom nplaum zoo tshaj plaws {}}
Qhov no pub dawb-radical grafting polymerization qhia elasticity, them nyiaj rau cov kev txwv ntawm ntshiab paa binders.
Thaum lub sijhawm hluav taws xob fab, dov cov kab ke yog ua kom sib txawv ntawm cov ntawv muaj peev xwm, txhim kho cov ntawv muaj peev xwm ua tau zoo dua qub, thiab txuas ntxiv ntawm lub neej ntsuas roj teeb {}}
4. paa pelithiation (lipaa)
Daim ntawv thov ntawm silicon-carbon-carbon-carbon-carbon (Si-c) cov pab pawg hydrogen uas muaj cov pab pawg ntawm cov pab pawg ua haujlwm nrog cov pab pawg ua haujlwm ntawm Siurers, txhawb nqa SEI tsim thiab interantly txhim kho lub neej lub neej ntawm Si Anodes lub neej ntawm Si Anodes {}} Yog li, Paa binders yog siv tau rau Si Anodes {}}
Kev tshawb fawb qhia tau hais tias Lithium polyacrylate (Lipaa) Outperforms yog ua rau elucatforms tau ua rau elucitforms tau ua rau elucitforms tau ua rau eluceting lub tshuab Lipaa cov kev ua haujlwm zoo tshaj plaws {}}
Cov hluav taws xob muaj xws li 15% nano-si, 73% bike {}}}} Cov pa nyem ntawm kev tawm ntawm ~ 790 mAh / g rau Lipaa-raws anodes piv rau ~ 610 mah / g rau paa-based anodes {}}
Kev Ua Haujlwm Ua Haujlwm Curves Ntawm Tag Nrho Cov Hlwb Siv NMC532 Cathodes
Daim duab A: CERPAA Binder tsis muaj kev sib cav sib haum xeeb ntawm kev pib ua haujlwm ntawm lub sijhawm 127 / g tom qab 90 mus txog 90 mus}
Daim duab B: CO RAU PAA BINDER QHIA TXOG KEV UA HAUJ LWM ZOO HEEV kev voj voog . 140 degree
Thawj-voj voog coulomic efficiency (CE): Lipaa hlwb tiav ~ 82%) {} {%} {%} Paa cell tau qis dua ntawm ~ 75%), xav tau ~ 40 mus txog rau 99.6% CE - cim qeeb dua lipaa hlwb.
Mema kev tshuaj xyuas ntawm 50% qhov tob ntawm paug (dod) qhia ntau dua rau sab hauv lub cev muaj zog ntxiv nrog rau kev sib piv nrog rau kev sib piv nrog rau kev sib piv nrog rau kev sib piv nrog rau kev sib piv nrog rau kev sib piv nrog lub zog hauv Lipaa}
Thermogravetric tsom (tga) los ntawm kevin {{05 degree} Paa nruab nrab ntawm {{{{}}℃thiab li hloov pauv hauv Lipaa, uas yog cov tshuaj tua hluav taws xob hauv qab) {% ntawm cov pab pawg carboxyl {}}
High-kub-kub polymerization ntawm Paa Carboxyl pawg yuav ua rau muaj kev sib cuam tshuam ntawm PAA thiab cov muaj peev xwm piav qhia txog kev ua haujlwm siab dua li Lipa ua kom muaj peev xwm ua rau Lipaa lub zog zoo dua caij tsheb kauj vab .
{.} Xaus
Txoj kev kawm no paub txog kev ruaj khov electrochemical ruaj khov raws li qhov tseem ceeb tshaj plaws txwv Paa lub voj voog ua haujlwm {}} ntawm cov peev xwm tsawg, paa undergoes ib nrab hloov dua siab tshiab rauLaspaa, generating hydrogen roj:
PAA + ... ->Lipaa + h₂
Qhov tshuaj tiv thaiv no piav qhia lub voj voog ua xwb ntawm Paa hlwb (~ 80%) piv rau Lipaa cov hlwb (~ 40 mus txog hnub tim {{4}<5 cycles) required for PAA cells to achieve high Coulombic efficiency (99.6%).
Tob Lub Zog Tshiab- Koj tus khub ua haujlwm hauvCov Khoom Siv Hluav Taws Xob, Khoom siv, thiab kab kab ntau lawm cov ntsiab lus .
