1. Qhov "Txoj Cai Sib Txawv" ntawm ob hom roj teeb
Txawm hais tias ob qho tib si - lub xeev roj teeb thiab sodium - ion roj teeb nyob rau hauv lub tsom teeb raws li tom ntej no - tiam roj teeb technologies, lawv cov laj thawj tseem ceeb rau kev xav tau CNTs yog txawv kiag li.
Lub hom phiaj ntawm cov khoom siv- lub xeev cov roj teeb yog "kev nyab xeeb thiab lub zog siab dua" - hloov cov kua electrolytes nrog cov khoom- xeev electrolytes los daws qhov teeb meem thermal runaway. Txawm li cas los xij, kev lag luam tawm - tawm yog cov khoom tsis zoo- cov khoom sib txuas sib txuas thiab kev thauj mus los tsis zoo, uas yog qhov cuam tshuam loj tshaj plaws rau kev lag luam ntawm cov khoom siv hluav taws xob- lub xeev.
Lub hom phiaj ntawm sodium - ion roj teeb yog "pheej yig dua thiab ruaj khov" - sodium cov peev txheej muaj ntau, thiab tus nqi qis dua li ntawm lithium. Kev lag luam tawm - tawm yog tias ionic vojvoog ntawm sodium yog 34% loj dua li ntawm lithium, ua rau intercalation thiab deintercalation nyuaj dua. Tsis tas li ntawd, cov khoom siv hluav taws xob hauv nruab nrab ntawm cov khoom siv tsis muaj zog, uas ua rau muaj zog tsis tshua muaj zog.
Qhov sib txawv "genes" ntawm ob hom roj teeb no txiav txim siab lub luag haujlwm sib txawv ntawm CNTs ua si hauv txhua qhov.
2. Khoom- Lub Xeev Cov Roj Teeb: SWCNTs Yog "Key Enabling Material"
2.1 Peb Lub Cev Loj Loj ntawm Cov Khoom Siv - Lub Xeev Cov Roj Teeb
Tsiv cov khoom muaj zog- lub xeev cov roj teeb los ntawm chav kuaj mus rau ntau lawm ntsib peb qhov teeb meem tseem ceeb:
| Lub raj mis | Kev tshwm sim tshwj xeeb |
|---|---|
| Siab interfacial impedance | Kev sib cuag tsis txaus ntawm cov khoom electrolyte thiab electrode; ion kev thauj mus los cuam tshuam |
| Tsawg ion / electron thauj efficiency | Tsis muaj kua electrolyte ntub dej; tsis tiav conductive network |
| Mechanical stability tsis zoo | Kev hloov pauv thaum them nqi / tso tawm ua rau kev cuam tshuam ntawm kev sib tshuam |
2.2 Tus nqi tshwj xeeb ntawm SWCNTs
Kev tshawb fawb los ntawm Shandong Tanfeng qhia tias SWCNTs tuaj yeem hais txog peb lub fwjchim luj kawg nkaus:
Ua ntej, tsim ib qho peb -sib nqus conductive network.SWCNTs muaj ib qho -dimensional nanostructure thiab ballistic electron thauj cov yam ntxwv, nrog hluav taws xob conductivity 1000 npaug ntawm tooj liab. Tsuas yog ib qho ntxiv me me xwb, lawv tuaj yeem tsim peb - qhov sib txuas txuas txuas txuas ntxiv hauv cov hluav taws xob, txhim kho cov hluav taws xob hluav taws xob ntawm cov khoom siv hluav taws xob- lub xeev cov roj teeb thiab txo cov kev tiv thaiv sab hauv.
Thib ob, txhim kho kev sib cuag ntawm lub ntsej muag.Qhov kev hloov pauv siab ntawm SWCNTs tso cai rau lawv kom ua raws li micro- nplai qhov sib txawv ntawm cov electrode thiab electrolyte, txo qis kev sib cuag thiab txo qhov cuam tshuam ntawm interfacial impedance.
Thib peb, buffering volume expansion.Silicon-raws li anodes muaj kev nthuav dav txog li 300% thaum lub sij hawm them nqi / tso tawm, uas tuaj yeem yooj yim ua rau particle pulverization thiab kev sib tsoo. SWCNTs tuaj yeem tsim ib qho kev txhawb nqa yooj yim ntawm cov khoom siv silicon, ua haujlwm zoo li "nano-springs" kom nqus tau kev ntxhov siab, tswj cov electrode kev ncaj ncees, thiab txhim kho roj teeb lub neej.
2.3 Muaj Validation: Twb tau thov los ntawm Shandong Tanfeng
Cov tuam txhab loj hauv tsev tshawb fawb thiab tsim cov khoom siv-xeev/semi-khoom- lub xeev cov roj teeb yog cov neeg siv khoom ntawm Shandong Tanfeng. Lub tuam txhab tuav ib feem ntawm CNT cov khoom nyob rau hauv cov khoom ntawm - lub xeev cov roj teeb thiab cov khoom muaj feem xyuam rau ntau yam khoom txawv teb chaws - lub xeev roj teeb manufacturers.
Cov ntsiab lus tseem ceeb:Rau cov khoom- lub xeev cov roj teeb, SWCNTs yog "yuav tsum-muaj," tsis yog "zoo-rau-muaj."
3. Sodium-Ion roj teeb: CNTs yog "Kev Ua Haujlwm Zoo"
3.1 Qhov Kev Sib Tw Conductivity ntawm Sodium-Ion roj teeb
Cov ntaub ntawv siv nyob rau hauv sodium- ion roj teeb muaj qhov tsis muaj hluav taws xob ua hluav taws xob thiab tsis muaj zog ceev. Yog li ntawd, lawv xav tau cov khoom siv hluav taws xob zoo dua los hloov kho kom haum, txo qhov chaw ua haujlwm, ua kom lub zog muaj zog ntom ntom, thiab tsim kom muaj kev sib txuas zoo.
Kev tshawb fawb kev kawm kuj tau lees paub qhov tseem ceeb ntawm daim ntawv thov nqi ntawm CNTs hauv sodium -ion roj teeb. Cov ntaub ntawv carbon, nrog rau lawv cov hluav taws xob hluav taws xob siab, kev sib txawv ntawm cov qauv, thiab tus nqi qis, tau kawm dav siv los ua anodes hauv sodium - ion roj teeb. CNTs, nrog rau lawv cov cheeb tsam tshwj xeeb thiab kev ua tau zoo ntawm electrochemical, tau nyiam cov xim tseem ceeb hauv sodium -ion roj teeb.
3.2 Cov ntsiab lus tseem ceeb ntawm Sodium-Ion roj teeb rau CNTs
Tsis zoo li cov khoom siv- lub xeev cov roj teeb, cov kev xav tau ntawm sodium- ion roj teeb rau CNTs yog qhov tseem ceeb hauv cov hauv qab no:
| Yuav tsum Dimension | Cov ntsiab lus tshwj xeeb |
|---|---|
| Conductive network tsim | Compensates rau inherently tsis muaj zog hluav taws xob conductivity ntawm cov ntaub ntawv |
| Rate muaj peev xwm txhim kho | Txhim kho sodium ion intercalation / deintercalation kinetics |
| Kev them nyiaj ceev ceev | Ua kom muaj peev xwm ntau dua hauv qhov chaw tsawg |
Cov tuam txhab loj tam sim no tshawb fawb txog sodium- ion roj teeb yog cov neeg siv khoom ntawm lub tuam txhab, thiab qee cov neeg siv khoom twb tau siv lub tuam txhab SWCNT cov khoom hauv lawv cov roj teeb sodium R&D.
Qhov no txhais tau hais tias txawm tias rau "qis- nqi" sodium- ion roj teeb txoj kev, siab - cov kev daws teeb meem kawg kuj xav tau siab -kev ua tau zoo SWCNTs los txhawb lawv.
4. Kev sib piv siv: Kev thov siv rau CNTs thoob plaws cov txheej txheem sib txawv
Ob daim ntawv thov scenarios ntawm silicon -carbon anodes thiab siab -nickel ternary cathodes muaj kev ua tau zoo dua thiab yog li xav tau ntau dua ntawm CNTs.
Lub logic tom qab qhov kev ntsuas no yog qhov tseeb:
Khoom - lub xeev roj teebkoom nrog cov teeb meem nyuaj xws li cov khoom siv- cov khoom sib cuam tshuam thiab qhov ntim nthuav dav, ua rau muaj qhov xav tau siab tshaj plaws rau CNTs (tshwj xeeb yog SWCNTs).
Sodium{0}}Ion roj teeb, txawm hais tias yuav tsum tau CNTs los txhim kho conductivity, muaj tag nrho cov kev ua tau zoo uas yuav tsum tau nruj dua li cov silicon -carbon anodes thiab siab -nickel ternary cathodes, thiab yog li ntawd yuav tsum tau tsawg dua.
Los ntawm txoj kev xav txog kev siv tshuab thev naus laus zis thiab raws li cov yam ntxwv tseem ceeb ntawm cov khoom siv, cov kev siv thev naus laus zis nrog cov kev xav tau ua haujlwm siab, xws li cov khoom siv hluav taws xob- lub xeev, yuav muaj kev xav tau ntau dua rau cov khoom SWCNT.
5. Phau Ntawv Qhia Kev Xaiv: Ib lub rooj kom nkag siab txog koj txoj kev xaiv
| Hom roj teeb | Core Challenge | Lub luag haujlwm ntawm CNTs | Hom kev pom zoo | Kev siv Trend |
|---|---|---|---|---|
| Khoom -State | High interfacial impedance, khoom tsis zoo -kev sib cuag | Tsim cov network conductive, tsis ntim ntim nthuav dav, txhim kho interface | Feem ntau SWCNTs | Kev thov siab, tsis tu ncua loj hlob |
| Semi-Solid-State | Interfacial stability | Ib yam li cov khoom muaj zog- xeev, nrog rau qhov yuav tsum tau qis dua | SWCNT + MWCNT hybrid | Kev thov siab heev |
| Sodium-Ion | Tsis muaj zog conductivity, tsawg zog ceev | Txhim kho conductive network efficiency | Feem ntau SWCNTs (rau siab-kawg) | Nruab nrab, loj hlob nrog industrialization |
| Cov pa roj lithium-Ion | Conductive additive hloov | Hloov cov pa roj carbon dub, txhim kho tus nqi peev xwm | Feem ntau yog MWCNTs | Kev loj hlob tsis tu ncua |
Summary nyob rau hauv ib kab lus:
Khoom - lub xeev roj teeb:SWCNTs yog qhov tseem ceeb, nrog rau kev siv siab thiab kev thov muaj zog.
Sodium{0}}Ion roj teeb:CNTs (tshwj xeeb tshaj yog SWCNTs) yog xav tau los txhim kho kev ua tau zoo, tab sis qhov yuav tsum tau muaj tsawg dua.
6. Qhov zoo ntawm Shandong Tanfeng
Raws li tus kws tshaj lij CNT cov chaw tsim khoom, peb qhov kev npaj tag nrho hauv cov khoom siv - lub xeev roj teeb thiab sodium - ion roj teeb teb muaj cov txiaj ntsig hauv qab no:
Ua ntej, tag nrho cov khoom kab kev pab them nqi.Peb muab ob qho tib si SWCNT thiab MWCNT cov khoom lag luam, ua tau raws li cov kev xav tau ntawm cov txheej txheem thev naus laus zis xws li cov khoom siv hluav taws xob- lub xeev cov roj teeb, cov roj teeb semi-khoom- xeev, thiab sodium- ion roj teeb.
Thib ob, ua kev lag luam validation.Peb cov khoom SWCNT tau raug coj mus kuaj rau ntau lub tuam txhab ua lag luam hauv cov khoom lag luam - lub xeev roj teeb thiab sodium - ion roj teeb tuam txhab. Qee qhov twb tau ua tiav me me - cov khoom xa tuaj, thiab peb cov neeg siv khoom siv tau zoo tau ua tus thawj coj.
Thib peb, kev ruaj ntseg muaj peev xwm.Nrog rau kev nthuav dav ntxiv ntawm peb lub peev xwm SWCNT ntau lawm, peb tuaj yeem muab cov neeg siv khoom ruaj khov, batch- nplai cov khoom lag luam, muab cov ntaub ntawv pov thawj rau kev lag luam ntawm cov khoom siv hluav taws xob- xeev cov roj teeb thiab sodium- ion roj teeb.
Plaub, daim ntawv thov kev txhawb nqa.Hais txog cov kev xav tau tshwj xeeb ntawm cov khoom siv hluav taws xob- lub xeev cov roj teeb thiab sodium- ion roj teeb, peb muab kev txhawb nqa dav dav - los ntawm cov txheej txheem dispersion thiab formulation optimization rau cell test-pab cov neeg siv khoom sai ua kom tiav cov khoom siv.
Tam sim no, peb cov khoom CNT tau siv dav hauv tsheb tshiab, lub zog cia, khoom siv hluav taws xob, thiab lwm yam. Raws li kev lag luam ntawm cov khoom siv hluav taws xob- lub xeev cov roj teeb thiab sodium- ion roj teeb nrawm, peb tos ntsoov yuav koom tes nrog ntau tus neeg siv khoom txhawm rau ua kom muaj kev xa tawm ntawm - tiam roj teeb technologies.