Hauv kev nrhiav lub zog ntau dua rau lithium-ion roj teeb, silicon-raws li anodes tau tshwm sim los ua ib tus neeg sib tw. Txawm li cas los xij, lawv txoj kev lag luam raug cuam tshuam los ntawm cov teeb meem xws li kev nthuav dav loj thiab, qhov tseem ceeb, tsis yog -cov ntaub ntawv lithiation. Kab lus no tshawb txog qhov ua rau, cuam tshuam tsis zoo, thiab cov kev daws teeb meem siab heev los txo qhov teeb meem no, ib qho kev txiav txim siab tseem ceeb rau txhua tus neeg koom nrog.roj teeb ntau lawmthiabkev tshawb fawb roj teeb.
Thaum lub sij hawmlithiationtxheej txheem ntawmsilicon{0}} cov khoom siv anode, tsis yog-cov lithiation tsis xws luag tuaj yeem tshwm sim vim muaj yam xws li cov khoom siv hauv microstructural heterogeneity, tsis sib luag electrolyte tis, thiab tsis yog -cov ntaub ntawv tam sim no ntom ntom. Piv txwv li, nyob rau hauv cov cheeb tsam uas silicon nanoparticles agglomerate, lithium - ion diffusion txoj kev ntev dua, thiab cov hluav taws xob hauv zos faib tsis sib npaug, ua rau qeeb lithiation kinetics. Nyob rau hauv sib piv, lithiation tshwm sim yooj yim dua nyob rau saum npoo ntawm silicon hais los yog ntawm qhov chaw uas muaj ntau yam tsis xws luag, ua rau inconsistent degrees ntawm lithiation.
Los ntawm kev xav ntawm electrochemical kinetics, cov txheej txheem lithiation muaj ntau cov kauj ruam, suav nrog lithium{0}}ion diffusion hauv electrolyte, tsiv teb tsaws los ntawm cov khoom electrolyte interphase (SEI) zaj duab xis, thiab embedding nyob rau hauv cov khoom siv silicon. Cov tshuaj tiv thaiv ntawm cov kauj ruam no txawv thiab raug cuam tshuam los ntawm yam xws li qhov kub thiab txias. Thaum lub roj teeb ua haujlwm nyob rau hauv ntau yam kev them nqi- paug tawm, tus nqi tsis sib xws ntawm cov kauj ruam no dhau los ua kom pom tseeb, ua rau hnyav dua tsis yog-lithiation.
Tsis yog-cov lithiation tsis xws luag ua rau muaj kev ntxhov siab hauv cheeb tsam hauv silicon- cov khoom siv anode, ua rau cov pulverization thiab cov qauv degradation. Cov cheeb tsam uas muaj qib siab dua ntawm lithiation muaj kev nthuav dav ntau dua, thaum cov cheeb tsam nrog qis lithiation tau hloov pauv me me. Qhov tsis sib xws hauv ntim nthuav dav tsim kev ntxhov siab nyob rau hauv cov khoom, ua rau tawg ntawm silicon hais. Tsis tas li ntawd, tsis yog -lithiation tsis zoo cuam tshuam rau lub roj teeb tus nqi- tso tawm efficiency thiab caij tsheb kauj vab. Vim muaj ntau theem ntawm lithiation nyob rau hauv ntau cheeb tsam, cov tshuaj tiv thaiv kev loj hlob thaum lub sij hawm them nyiaj- lub voj voog tawm ua tsis sib xws, ua kom muaj peev xwm ua kom tawg thiab ua rau lub neej luv luv. Tsis tas li ntawd, tsis yog -cov ntaub ntawv lithiation tuaj yeem ua rau tus kheej- tso tawm, txo qhov kev cia ntawm lub roj teeb.
Kev hais lus tsis yog-cov ntaub ntawv lithiation yuav tsum muaj kev sib koom ua ke, los ntawm cov khoom tsim los rau kev ua kom zoo dua cov roj teeb. Nov yog cov kev daws teeb meem tseem ceeb:
1. Optimizing Electrode Structure Tsim
(1) Tsim ib qho peb -qhov kev sib txuas ua ke: Kev sib koom ua ke ntawm 3D conductive network, xws li cov khoom siv pa roj carbon monoxide, carbon nanotubes, lossis graphene, raws li lub hauv paus kev txhawb nqa tuaj yeem txhim kho txoj hauv kev thauj khoom hluav taws xob. Qhov no ua rau muaj kev faib tawm ntau dua thiab thauj cov lithium ions nyob rau hauv cov electrode, txo qhov tsis yog -cov lithiation tshwm sim los ntawm kev thauj khoom tsis zoo.
(2) Tsim cov qauv gradient electrodes: Fabricating electrodes nrog compositional lossis porosity gradients los ntawm cov khoom tam sim no mus rau saum npoo tuaj yeem txhawb nqa lithium ntau dua qub- ion faib thaum caij tsheb kauj vab, tiv thaiv hauv zos dhau - lossis hauv qab - lithiation. Preciseequipment customization yog ib qho tseem ceeb heev rau txheej txheej cov architectures siab heev tsis tu ncua.
2. Txhim kho cov txheej txheem kev npaj cov khoom siv silicone
(1) Kev tswj cov silicon particle loj thiab morphology: Siv cov txheej txheem kev npaj meej los tswj qhov loj thiab morphology ntawm silicon hais yog qhov tseem ceeb. Cov khoom me me, ntau yam sib xws muab thaj chaw loj dua, ua kom yooj yim lithium -ion embedding thiab extraction.
(2) Fabricating ntxeem tau cov qauv silicon: Npaj cov ntaub ntawv silicon nrog cov qauv ntxeem tau (xws li, xaj mesoporous silicon) tuaj yeem ua rau lithium{3}} ion diffusion channels thiab ua kom luv diffusion nrug. Kev nrhiav cov khoom siv roj teeb uas raug cai nrog cov khoom no yog qhov tseem ceeb rau kev ua tiav R&D thiab pilot- teev ntau lawm.
3. Optimizing Electrolyte Formulation
(1) Ntxiv cov khoom siv ntxiv: Kev sib xyaw ntxiv xws li lithium bis (oxalato) borate (LiBOB) tuaj yeem tsim cov yeeb yaj kiab SEI ntau dua thiab ruaj khov, txhim kho lithium- ion thauj khoom ntawm qhov sib cuam tshuam thiab txhawb nqa kev faib khoom sib xws.
(2) Kho cov kuab tshuaj muaj pes tsawg leeg: Optimizing lub cev hnyav nrog cov khoom tsim nyog ua kom cov lithium ntau dua - ion tsiv teb tsaws. Hom electrolyte R&D no yog ib feem tseem ceeb ntawm kev tsim tom ntej -tiam roj teeb technology zoo li cov khoom siv hauv xeev- roj teeb.
4. Txhim kho cov txheej txheem tsim cov roj teeb
Qhov no yog qhov TOB NEW ENERGY qhov kev txawj ntse dhau los ua qhov tseem ceeb. Tsis yog-cov ntaub ntawv lithiation feem ntau yog kev sib tw tsim khoom.
(1) Kev tswj cov txheej txheem txheej txheej: Kev tswj cov txheej txheej tuab, qhov sib xws, thiab ziab yog qhov tseem ceeb los xyuas kom muaj cov qauv electrode zoo ib yam. Ourcustomized electrode manufacturing khoom yog tsim los ua kom tiav qib siab ntawm precision, tshem tawm ib tug thawj qhov chaw ntawm lithiation variation.
(2) Txhim kho cov txheej txheem sib dhos roj teeb kom zoo: xyuas kom nruj thiab tsis sib xws ntawm cov nplooj ntawv electrode thiab tswj kev sib dhos ib puag ncig yog cov kauj ruam tseem ceeb. Ib tug zoo-calibrated pilot kab los yog tag nrho cov kab ntau lawm integrates cov yam tseem ceeb los tsim kom zoo dua, zoo sib xws hlwb.
5. Siv Cov Kev Tswj Cov Roj Teeb Tseem Ceeb (BMS)
(1) Intelligent charging algorithms: Tsim kom muaj kev them nyiaj ntse algorithms uas dynamically kho tsis raws li qhov tiag -cov ntaub ntawv lub sij hawm tuaj yeem tiv thaiv cov overcharging los yog undercharging, yog li txhim kho lithiation uniformity.
(2) Roj teeb lub xeev saib xyuas thiab ntsuas qhov ntsuas: Siv BMS los saib xyuas thiab sib npaug ntawm ib tus neeg lub hlwb kom ntseeg tau tias tag nrho cov hnub nyoog ntim sib npaug, txo qhov ntev -cov teebmeem ntawm qhov sib txawv ntawm qhov pib lithiation.
Xaus
Ua kom muaj kev sib luag lithiation yog qhov tseem ceeb rau kev qhib lub peev xwm ntawm tag nrhosilicon{0}}raws li anodes. Nws yuav tsum muaj kev sib koom ua ke ntawm kev sib koom ua ke ntawm cov khoom siv science, electrochemistry, thiab, qhov tseem ceeb tshaj plaws, cov txheej txheem tsim khoom raug thiab scalable. NtawmTOB NEW ENERGY, peb muab covkawg-rau- xaus cov kev daws teeb meem roj teeb-los ntawm cov ntaub ntawv siab heev thiab kev txawj ntse mus rau cov khoom siv kho mob thiabturnkey ntau lawm kab-los pab koj kov yeej cov kev cov nyom no thiab tsim kom zoo dua, txhim khu kev qha roj teeb.
Tiv tauj pebhnub no los tham txog yuav ua li cas peb tuaj yeem pab txhawb koj lub roj teeb txhim kho thiab tsim cov hom phiaj.
