Keeb kwm

Cov roj teeb lithium-ion tau dav siv los ua cov roj teeb rov qab txij li xyoo 1990 vim lawv lub peev xwm thim rov qab siab thiab lub voj voog ruaj khov. Nrog rau qhov nce ntxiv ntawm tus nqi ntawm lithium thiab qhov xav tau ntau ntxiv rau lithium thiab lwm yam khoom siv ntawm lithium-ion roj teeb, qhov tsis txaus ntawm cov khoom siv hluav taws xob ntau ntxiv rau cov roj teeb lithium yog yuam kom peb tshawb nrhiav cov tshuab hluav taws xob tshiab thiab pheej yig dua raws li cov khoom muaj ntau. . Cov roj teeb sodium-ion qis dua yog qhov kev xaiv zoo tshaj plaws. Sodium-ion roj teeb yuav luag pom tau ua ke nrog lithium-ion roj teeb, tab sis vim nws lub vojvoog ion loj thiab muaj peev xwm tsawg, tib neeg xav tau ntau dua los kawm lithium hluav taws xob, thiab kev tshawb fawb ntawm sodium-ion roj teeb yuav luag. Nrog rau kev loj hlob sai ntawm cov tsheb hluav taws xob thiab kev lag luam cia lub zog nyob rau hauv xyoo tas los no, cov roj teeb sodium-ion, uas tau thov tib lub sijhawm lithium-ion roj teeb, tau rov qab nyiam cov neeg.'s mloog.

Lithium, sodium thiab poov tshuaj yog tag nrho cov alkali hlau nyob rau hauv lub sij hawm ntawm lub ntsiab lus. Lawv muaj cov khoom zoo sib xws ntawm lub cev thiab tshuaj lom neeg thiab tuaj yeem siv los ua cov khoom siv roj teeb thib ob hauv kev xav. Sodium cov peev txheej yog nplua nuj heev, dav dav hauv lub ntiaj teb crust thiab yooj yim rau extract. Raws li kev hloov pauv ntawm lithium, sodium tau them ntau dua thiab ntau dua hauv cov roj teeb. Lub roj teebtsim tawmssib ntaus sib tuatxhawm rau tsim cov txheej txheem thev naus laus zis ntawm sodium-ion roj teeb.Kev taw qhia kev xav txog kev nrawm rau kev txhim kho lub zog tshiab cia, Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab thev naus laus zis hauv Kev Tshawb Fawb Lub Zog thaum lub sijhawm 14th Tsib Xyoo Npaj, thiabKev Npaj Ua Haujlwm rau Kev Txhim Kho Lub Zog Txuag Tshiab Thaum Lub Sijhawm Tsib Xyoo 14thTshaj tawm los ntawm National Development thiab Reform Commission thiab National Energy Administration tau hais los tsim ib lub cim tshiab ntawm kev ua haujlwm siab ntawm lub zog khaws cov thev naus laus zis xws li roj teeb sodium-ion. Ministry of Industry thiab Information Technology (MIIT) kuj tau txhawb nqa cov roj teeb tshiab, xws li cov roj teeb sodium-ion, ua ballast rau kev txhim kho lub zog tshiab. Cov qauv kev lag luam rau cov roj teeb sodium-ion kuj tseem ua haujlwm. Nws cia siab tias vim tias kev lag luam nce peev, thev naus laus zis ua kom paub tab thiab cov saw hlau ua lag luam tau maj mam txhim kho, cov roj teeb sodium-ion nrog cov nqi siab yuav tsum tau tuav ib feem ntawm lithium-ion roj teeb kev lag luam.

Sodium-ion roj teeb piv rau lithium-ion roj teeb

• Cov pa roj carbon tsis zoo electrode ntawm sodium-ion roj teeb muaj tus nqi qis thiab qhov chaw hloov pauv loj dua li ntawm graphite.
• Aluminium ntawv ci tuaj yeem siv los ua cov khoom siv tam sim no rau qhov zoo thiab tsis zoo electrode ntawm sodium-ion roj teeb. Cov roj teeb lithium-ion muaj peev xwm tsis zoo thiab yuav tsum siv cov ntawv ci tooj liab uas tsis corroded. Sodium-ion roj teeb, ntawm qhov tod tes, muaj lub peev xwm tsis zoo, yog li lawv tsis alloy nrog sodium. Aluminium ntawv ci yog qhov hnyav thiab tus nqi qis dua tooj liab ntawv ci.
• Hauv cov electrolyte, solubility ntawm Na⁺ yog li 30% qis dua li ntawm Li⁺. Lub dissolution tus nqi yog siab, thiab tus nqi hloov mus rau hauv lub electrode - electrolyte interface yog me me, uas muab zoo electrode dynamics. Yog li ntawd, tus nqi tawm ntawm sodium-ion nqi yog siab ntawm qhov kub thiab txias, thiab qhov kub thiab txias ua haujlwm tau zoo heev, thiab nws tuaj yeem them sai sai.
• Sodium-ion roj teeb muaj kev xaiv dav dua ntawm cov khoom siv hluav taws xob zoo. Yuav luag tag nrho cov kev hloov pauv hlau hauv thawj kab ntawm lub rooj sib tham tuaj yeem siv rau hauv cov roj teeb sodium-ion. Qhov no yog vim qhov loj qhov sib txawv ntawm Na⁺ (lub vojvoog 0.102nm) thiab kev hloov pauv hlau ions (lub vojvoog 0.05-0.07nm), uas yog qhov tsim nyog rau lawv kev sib cais.
• Lub zog sab hauv ntawm lub roj teeb sodium-ion yog siab dua li ntawm lithium-ion roj teeb. Nyob rau hauv cov ntaub ntawv ntawm luv luv Circuit Court, lub instantaneous cua sov yog tsawg, kub nce qeeb qeeb thiab lub thermal runaway kub yog siab tshaj li ntawm lithium roj teeb, yog li ntawd lub sodium-ion roj teeb muaj kev ruaj ntseg dua.
• Lub vojvoog loj ntawm sodium-ion tuaj yeem ua rau cov khoom tawg thaum nws raug tshem tawm ntawm cov khoom siv electrode, yog li cuam tshuam rau tag nrho cov kev ua tau zoo ntawm lub roj teeb thiab kev ncaj ncees ntawm cov electrode.
• Sodium muaj ntau dua tus qauv electrode muaj peev xwm (0.33V siab dua lithium), ua rau lub zog qis dua thiab ua rau nws nyuaj rau kev sib tw nrog lithium-ion roj teeb hauv lub zog hluav taws xob.

Kev tshawb nrhiav qhov tseeb

Nyob rau hauv xyoo tas los no, kev tshawb fawb ntawm cov roj teeb sodium-ion suav nrog cov khoom siv cobalt-dawb cathode rau cov roj teeb sodium-ion, cov nqi qis polyanionic sulfate rau cov electrode ntawm sodium-ion roj teeb, nano-pb tebchaw siv nyob rau hauv qhov zoo electrode ntawm sodium. -ion ​​roj teeb, kev tshawb fawb yooj yim ntawm cov ntaub ntawv organic anode rau cov roj teeb sodium-ion rau cov kev lag luam muaj peev xwm, tin-based hlau oxides thiab sulfides siv los ua cov khoom siv anode rau sodium-ion roj teeb, Nanoengineering ntawm cov khoom siv carbon siab hauv sodium-ion roj teeb, thiab daim ntawv thov ntawm advanced in situ characterization nyob rau hauv txoj kev tshawb no ntawm sodium-ion roj teeb. Feem ntau, nws tseem yog qhov kev tshawb fawb hotspot kom tau txais cov khoom siv hluav taws xob zoo thiab tsis zoo los ntawm cov khoom ntawm kev hloov kho kom zoo, txhim kho txoj kev npaj thiab tshawb nrhiav sodium cia mechanism los txhim kho tag nrho cov kev sib tw ntawm sodium-ion roj teeb.