Cov hluav taws xob graphite tau pom tias muaj ntau lub cib fim siv tau hauv kev siv hluav taws xob tshiab, xws li cov roj teeb sodium-ion thiab cov roj teeb solid-state. Lawv cov khoom siv lub cev thiab tshuaj ruaj khov thiab cov qauv txheej txheem muab kev txhawb nqa tseem ceeb rau kev txhim kho kev ua haujlwm ntawm lub roj teeb. Lub caij no, lawv tuaj yeem txhim kho kev nyab xeeb hauv cov roj teeb solid-state thiab nthuav dav qhov chaw siv los ntawm kev txhim kho thev naus laus zis hauv cov roj teeb sodium-ion.
I. Cov Roj Teeb Khoom Siv Kho Vaj Tse: Qhov zoo ntawm kev ruaj khov thiab kev nyab xeeb ntawm graphite ua cov khoom siv anode
Cov qauv txheej txheem tiv thaiv kev tsim cov lithium dendrites
Cov qauv siv lead ua los ntawm graphite uas muaj ntau txheej txheej tuaj yeem coj tau zoo rau kev sib xyaw thiab kev tshem tawm cov lithium ions, zam kev pheej hmoo luv luv los ntawm cov dendrites nkag mus rau hauv lub separator, thiab txhim kho kev ua haujlwm nyab xeeb ntawm cov roj teeb solid-state. Cov yam ntxwv no ua rau graphite yog ib qho ntawm cov kev daws teeb meem zoo tshaj plaws rau cov khoom siv anode hauv cov roj teeb solid-state.
Kev ruaj khov tshuaj lom neeg hloov kho rau qhov chaw ib puag ncig hnyav
Cov roj teeb khov kho siv cov electrolytes khov kho es tsis siv cov electrolytes kua, muab qhov kub thiab txias dav dua thiab muaj zog dua. Graphite tuaj yeem tswj tau qhov ruaj khov ntawm cov qauv hauv qhov kub thiab txias thiab siab, ua kom lub roj teeb muaj lub neej ntev thiab ua tau raws li cov kev cai ntawm cov txheej txheem khaws cia hluav taws xob.
Muaj peev xwm rau kev siv thev naus laus zis dua tshiab
Los ntawm kev txhim kho cov txheej txheem npaj (xws li nanorization thiab txheej txheej saum npoo), lub zog ceev thiab kev them-tawm efficiency ntawm graphite anodes tuaj yeem txhim kho ntxiv. Piv txwv li, silicon-carbon anodes sib xyaw nrog cov ntaub ntawv silicon tau ua tiav ntau lawm, nrog lub peev xwm tshwj xeeb 3 txog 5 zaug siab dua li ntawm graphite ib txwm muaj, yog li ua ib qho kev taw qhia tseem ceeb rau cov kev daws teeb meem siab-zog hauv cov roj teeb khov-xeev.
II. Cov Roj Teeb Sodium-ion: Kev Txhim Kho Tshiab thiab Cov Txiaj Ntsig Zoo ntawm Graphite Anodes
Kev tsim kho tshiab hauv cov txheej txheem sib xyaw sodium ion
Lub tswv yim ib txwm hais tias qhov sib nrug ntawm cov graphite (kwv yees li 0.335 nm) tsis tuaj yeem haum rau sodium ions (nrog lub cheeb ntawm 0.36 nm), tab sis cov kev tshawb fawb tsis ntev los no tau ua tiav kev sib xyaw ua ke ntawm sodium ions los ntawm kev nthuav dav qhov sib nrug ntawm cov graphite los ntawm kev sib tsoo pob lossis los ntawm kev siv cov tshuaj sodium-oxide los tsim cov tshuaj tiv thaiv. Qhov kev tshawb pom no tau qhib txoj hauv kev tshiab rau kev siv graphite hauv cov roj teeb sodium-ion.
Cov txiaj ntsig ntawm tus nqi thiab cov peev txheej
Lub ntiaj teb muaj ntau cov graphite reserves thiab faib dav dav. Tuam Tshoj suav txog ntau dua 60% ntawm lub peev xwm tsim khoom thoob ntiaj teb, thiab tus nqi ntawm cov khoom siv raw qis dua li cov peev txheej lithium. Yog tias cov roj teeb sodium-ion siv cov graphite anodes, nws tuaj yeem txo cov nqi roj teeb thiab ua kom lawv cov txheej txheem lag luam sai dua hauv cov teb xws li kev khaws cia lub zog thiab cov tsheb fais fab qis.
Daim ntawv thov synergistic nrog cov ntaub ntawv carbon tawv
Cov pa roj carbon tawv tau dhau los ua cov khoom siv anode tseem ceeb rau cov roj teeb sodium-ion vim nws cov qauv tsis sib xws thiab qhov sib nrug loj ntawm cov txheej txheem, tab sis nws muaj teeb meem ntawm kev ua haujlwm qis thiab tus nqi siab. Kev sib xyaw ua ke ntawm graphite thiab cov pa roj carbon tawv tuaj yeem sib npaug kev ua tau zoo thiab tus nqi. Piv txwv li, cov thev naus laus zis asphalt-coated hard carbon muab kev xaiv anode zoo dua rau cov roj teeb sodium-ion los ntawm kev txhim kho kev ua hluav taws xob, txo qhov tsis kam sab hauv, thiab txhim kho kev ruaj khov ntawm lub voj voog.
Iii. Cov Tsav Tsheb Lag Luam thiab Kev Tsim Kho Kev Lag Luam
Qhov kev thov rau lub zog tshiab tau pom kev loj hlob sai heev
Kev muag khoom thoob ntiaj teb ntawm cov tsheb fais fab tshiab tau nce ntxiv tas li, thiab qhov kev thov rau cov roj teeb uas siv tau ntev thiab pheej yig hauv cov tshuab khaws cia hluav taws xob tau nce siab, ua rau kev nthuav dav ntawm kev ua lag luam rau cov khoom siv roj teeb lithium-ion anode. Kev tsim tawm thoob ntiaj teb ntawm cov khoom siv anode yuav ncav cuag 2.625 lab tons hauv xyoo 2025, ntawm cov uas graphite suav txog ntau dua 98%, dhau los ua cov khoom siv tseem ceeb hauv kev lag luam hluav taws xob tshiab.
Cov peev txheej thev naus laus zis ntawm lub tuam txhab thiab kev nthuav dav ntawm lub peev xwm
Shanshan Co., Ltd. tab tom txhawb kom muaj kev tsim cov khoom siv silicon ntau heev. Cov anodes carbon tawv siv dav hauv cov roj teeb lithium, cov roj teeb sodium-ion thiab cov roj teeb semi-solid. Lub peev xwm tsim khoom yog 1,000 tons thiab lub peev xwm tsim kho yog 40,000 tons.
Yicheng Zog Tshiab: Kev vam khom rau pawg neeg qhov zoo hauv cov peev txheej hydrogen, carbon thiab silicon, nws tau tsim ib lub kaw lus kev lag luam ntawm "cov ntaub ntawv carbon siab + qhov chaw-grid-load-storage kev koom ua ke". Nws lub tuam txhab me me, Kaifeng Carbon, muaj feem lag luam hauv tsev ntau dua 30% rau nws cov khoom lag luam tseem ceeb, UHPΦ 600-700mm graphite electrodes, tuav ruaj khov txoj haujlwm saum toj kawg nkaus hauv kev lag luam.
Catl thiab BTR: Ua ke tsim cov ntaub ntawv graphite anode uas muaj cov khoom siv siab kom txhim kho lub zog ntawm lub roj teeb thiab lub neej voj voog, thiab ua kom lawv txoj haujlwm ua tus thawj coj hauv kev siv tshuab.
Cov cai thiab cov qauv coj kev txhim kho kev lag luam
Tuam Tshoj tau tshaj tawm cov ntaub ntawv txoj cai xws li "Cov Cai Tswjfwm rau Kev Lag Luam Graphite" thiab "Txoj Kev Npaj Txhim Kho rau Kev Lag Luam Tsheb Zog Tshiab", txhawb kev hloov pauv ntawm kev lag luam mus rau qib siab, ntse thiab ntsuab. Cov lag luam txhim kho lawv lub zog sib tham txog kev siv tshuab thiab kev sib tw ua lag luam los ntawm kev koom ua ke tag nrho (xws li kev tsim cov peev xwm tsim khoom ntawm koob coke) thiab kev koom tes hauv kev tsim cov qauv thoob ntiaj teb (xws li ISO graphite electrode kuaj cov qauv).
Iv. Cov Qauv thiab Cov Teeb Meem Yav Tom Ntej
Kev koom ua ke ntawm thev naus laus zis thiab kev tsim kho tshiab
Kev tshawb fawb thiab kev tsim cov ntaub ntawv graphene thiab electrode, nrog rau kev ua kom zoo dua ntawm qhov sib txuas ntawm cov electrolytes khov thiab graphite anodes, yuav dhau los ua qhov tseem ceeb rau kev tawg los ntawm qhov tsis muaj zog ntawm lub zog. Piv txwv li, cov roj teeb graphene tuaj yeem txhim kho qhov kev tsav tsheb thiab ua tau raws li qhov xav tau ntawm cov tsheb fais fab siab.
Kev tiv thaiv ib puag ncig thiab kev txhim kho kom ruaj khov
Tus nqi rov qab los ntawm cov hmoov av graphite yuav tsum tau tsa mus rau 99.9%, thiab cov thev naus laus zis tsim hluav taws xob pov tseg los ntawm calcination tuaj yeem rov qab tau 35% ntawm kev siv hluav taws xob. Cov lag luam yuav tsum tsim kom muaj lub kaw lus kaw ntawm "kev tsim khoom - rov ua dua tshiab - rov tsim dua tshiab" los daws cov qauv kev tiv thaiv ib puag ncig thoob ntiaj teb xws li EU carbon tariff.
Kev nthuav dav ntawm cov lag luam tshiab
Los ntawm "Belt and Road Initiative", cov tuam txhab graphite Suav tau xa lawv cov thev naus laus zis mus rau sab hnub tuaj Asia, Africa thiab lwm thaj chaw, thiab tsim cov chaw tsim khoom hauv zos kom tsis txhob muaj kev cuam tshuam kev lag luam. Piv txwv li, lub hauv paus tsim khoom rau cov ntaub ntawv graphite anode tab tom tsim hauv Malaysia kom tau raws li qhov xav tau hauv zos rau cov tsheb fais fab tshiab.
Lub sijhawm tshaj tawm: Lub Yim Hli-22-2025