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Graphene lithium-ion roj teeb

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Graphene lithium-ion roj teeb

2024-04-29 15:47:33 dr hab

Cov roj teeb lithium-ion muaj qhov zoo ntawm lub peev xwm loj, lub neej voj voog ntev, thiab tsis nco qab. Lawv tau dhau los ua cov roj teeb uas nyiam tshaj plaws rau cov khoom siv hluav taws xob thoob ntiaj teb thiab cov roj teeb tseem ceeb rau cov tsheb tshiab lub zog.High zog ceev thiab them ceev ceev yog qhov tsis muaj kev hloov pauv hauv kev tsim cov khoom siv roj teeb lithium. Ntxiv cov khoom siv hluav taws xob rau cov khoom siv hluav taws xob zoo yog txoj hauv kev zoo los txhim kho kev ua haujlwm ntawm lithium roj teeb.


Nws tuaj yeem ua kom cov khoom siv hluav taws xob zoo ntawm qhov zoo thiab tsis zoo electrodes, ua kom lub roj teeb ntim lub zog ceev, thiab txo qhov tsis kam. , nce lub deintercalation thiab ntxig ceev ntawm lithium ions, txhim kho lub roj teeb tus nqi thiab tso tawm kev ua tau zoo, thiab txhim kho cov kev them nqi ceev ceev ntawm cov tsheb fais fab.Cov roj teeb hu ua graphene tsis yog ua los ntawm cov khoom siv graphene thoob plaws hauv lub roj teeb, tab sis siv graphene. cov khoom siv hauv cov electrodes ntawm lub roj teeb.

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Nyob rau hauv txoj kev xav, graphene electrodes tej zaum yuav muaj ob zaug lub peev xwm ntawm graphite.Ntxiv, yog graphene thiab carbon dub yog tov thiab ntxiv raws li conductive additives rau lithium roj teeb, lub internal kuj ntawm lub roj teeb yuav txo tau zoo, thiab lub roj teeb tus nqi thiab. tso tawm kev ua tau zoo thiab lub voj voog lub neej tuaj yeem txhim kho.

Tsis tas li ntawd, kev khoov ntawm lub roj teeb tsis cuam tshuam rau kev them nqi thiab kev ua haujlwm tawm, yog li cov electrodes yog ua los ntawm graphite. Tom qab cov ntaub ntawv graphene, lub roj teeb muaj lub siab them nqi thiab tawm tus nqi, uas yog vim li cas graphene roj teeb tau them ceev ceev.


Thaum siv cov roj teeb lithium, graphene muaj ob lub luag haujlwm tseem ceeb: ib qho yog cov khoom siv hluav taws xob, thiab lwm yam yog cov khoom siv hluav taws xob lithium-embedded.Cov ntaub ntawv saum toj no yog sib tw nrog cov khoom siv hluav taws xob cov roj carbon / graphite.Tam sim no, muaj peb hom ntawv tseem ceeb. ntawm kev ntxiv graphene rau lithium roj teeb: conductive additives, electrode composite cov ntaub ntawv, thiab ncaj qha raws li tsis zoo electrode cov ntaub ntawv. Tam sim no, kev tshawb fawb thiab kev txhim kho thev naus laus zis ntawm graphene conductive agents yog qhov paub tab.