Muaj qhov sib txawv tseem ceeb ntawm cov kev cai ntsuas rau cov roj av coke graphitized thoob plaws ntau qhov chaw siv. Hauv thaj chaw ntawm cov khoom siv roj teeb lithium-ion anode, qhov tseem ceeb yog muab tso rau ntawm kev ua haujlwm electrochemical, kev faib tawm qhov loj me ntawm cov khoom me me, thaj chaw tshwj xeeb, thiab kev tswj hwm kev huv. Hauv kev sib piv, thaj chaw ntawm cov pas nrig electrode (xws li graphite electrodes) muab qhov tseem ceeb dua rau kev coj ua hluav taws xob, lub zog kho tshuab, kev ruaj khov thermal, thiab kev tswj cov tshauv. Kev tshuaj xyuas ntxaws ntxaws tau muab rau hauv qab no:
I. Cov Khoom Siv Anode Lithium-ion Battery
- Kev Ua Haujlwm Electrochemical ua Tus Qhia Tseem Ceeb
Lub Peev Xwm Tshwj Xeeb ntawm Kev Them Nqi/Kev Tso Tawm Thaum Pib: Nws yuav tsum ncav cuag ≥350.0 mAh/g (National Standard GB/T 24533-2019) kom ntseeg tau tias lub zog ntawm lub roj teeb ceev. Kev Ua Haujlwm Coulombic Thaum Pib: Qhov yuav tsum tau ua ntawm ≥92.6% qhia txog qhov sib piv ntawm lub peev xwm rov qab tau ntawm cov khoom siv thaum lub voj voog thawj zaug. Cov Qauv Siv Crystal: Qhov sib nrug ntawm (002) ntawm lub dav hlau (d002) yog tswj los ntawm kev sim X-ray diffraction (XRD) kom ua kom zoo dua qib graphitization, txo cov teeb meem lattice, thiab txhim kho kev txav mus los ntawm hluav taws xob. 2. Kev Faib Tawm Qhov Loj ntawm Cov Khoom Me Me thiab Thaj Chaw Tshwj Xeeb
Kev Faib Tawm Qhov Loj ntawm Cov Khoom Me Me: Qhov nruab nrab ntawm cov khoom me me (D50) thiab qhov dav ntawm kev faib tawm yuav tsum tau tswj kom zoo dua cov txheej txheem npaj cov roj teeb slurry thiab volumetric zog ceev. Cov khoom me me uas sau cov qhov khoob ntawm cov khoom loj tuaj yeem txhim kho qhov ceev ntawm kev sib xyaw. Thaj Chaw Tshwj Xeeb: Yuav tsum muaj kev sib npaug ntawm kev ua haujlwm ntawm cov tshuaj tiv thaiv thiab kev poob peev xwm pib. Thaj chaw tshwj xeeb ntau dhau ua rau kev siv cov khoom sib txuas thiab kev tiv thaiv sab hauv, thaum thaj chaw tshwj xeeb tsis txaus txwv tsis pub lithium-ion deintercalation efficiency. 3. Kev Huv Si thiab Kev Tswj Xyuas Kev Ua Phem
Cov Pa roj carbon uas ruaj khov: Qhov yuav tsum tau ua ntawm ≥99.5% yog qhov tsim nyog los txo qhov cuam tshuam ntawm cov khoom tsis ua haujlwm rau kev ua haujlwm electrochemical. Cov dej noo thiab pH Tus nqi: Yuav tsum tau tswj hwm nruj kom tsis txhob muaj cov dej noo nqus lossis cov tshuaj tiv thaiv nrog cov electrolyte, uas tuaj yeem cuam tshuam rau kev ruaj khov ntawm cov txheej txheem npaj slurry.
II. Lub zog hluav taws xob (piv txwv li, Graphite Electrode)
- Kev coj ua thiab lub zog kho tshuab
Kev Tiv Thaiv: Nws yuav tsum qis li μΩ·m theem kom txo qhov poob zog thaum siv electrode. Lub Zog Flexural: Yuav tsum muaj lub zog flexural siab kom tiv taus kev ntxhov siab thaum siv thiab tiv thaiv kev tawg. Elastic Modulus: Kev sib npaug ntawm kev nruj thiab kev tawv yog qhov tsim nyog kom tsis txhob tawg vim yog thermal shock lossis kev co tshuab. 2. Kev Ruaj Ntseg Thermal thiab Kev Tiv Thaiv Oxidation
Thermal Expansion Coefficient: Nws yuav tsum qis kom txo qhov kev hloov pauv ntawm qhov kub thiab txias thiab tiv thaiv kev sib cuag tsis zoo ntawm lub electrode thiab lub cub tawg. Cov ntsiab lus tshauv: Nws yuav tsum yog ≤0.5% kom txo qhov cuam tshuam ntawm cov khoom tsis huv rau kev tiv thaiv electrode oxidation. Cov ntsiab lus hlau hauv tshauv tuaj yeem ua kom electrode oxidation sai dua thiab ua rau lub neej ua haujlwm luv dua. 3. Kev Hloov Kho Txoj Kev Tsim Khoom
Kev Ceev Ntau: Kev ceev ntau yog qhov tsim nyog los txhim kho qhov sib zog ntawm lub electrode thiab txhim kho kev coj ua thiab kev tiv thaiv oxidation. Cov Txheej Txheem Impregnation thiab Graphitization: Ntau qhov impregnations thiab kev kub siab graphitization (≥2800 ° C) yog qhov yuav tsum tau ua kom txhim kho kev txiav txim siab ntawm cov siv lead ua thiab txo qhov tsis kam.
III. Qhov Ntsuas Ua Ntej Uas Tsav Los Ntawm Cov Xwm Txheej Siv Lithium-ion Battery Anode Cov Khoom Siv: Lawv yuav tsum ua tau raws li qhov xav tau rau lub zog ceev thiab lub neej ntev, yog li ntawd cov kev cai nruj rau kev ua haujlwm electrochemical, kev faib tawm qhov loj me ntawm cov khoom me me, thiab kev huv. Electrode Rods: Lawv yuav tsum ua haujlwm ruaj khov hauv qab qhov kub siab thiab qhov ceev tam sim no siab, yog li qhov tseem ceeb dua rau kev coj ua hluav taws xob, lub zog kho tshuab, thiab kev ruaj khov thermal.
Lub sijhawm tshaj tawm: Lub Kaum Hli-15-2025