Tshiab Lithium Battery Technology - daws cov teeb meem ntawm cov roj teeb lithium ib txwm muaj xws li tawg thiab tsis muaj zog ceev
Tsis ntev los no, ib pab neeg ua haujlwm ntawm University of Illinois hauv Tebchaws Meskas tau tshaj tawm tias lawv tau tsim cov roj teeb lithium tshiab. Hom roj teeb no yuav tsis ntes hluav taws lossis tawg, thiab tib lub sijhawm tuaj yeem txhim kho lub roj teeb lub neej ntawm cov khoom siv nrog lub roj teeb no. Qhov no yuav yog lub roj teeb tseem ceeb thev naus laus zis rau cov xov tooj ntse yav tom ntej. Nws tuaj yeem hais tau tias qhov no yuav tsis yog tsuas yog kev ua haujlwm loj hauv kev lag luam xov tooj ntawm tes, tab sis kuj yog ib qho tseem ceeb thev naus laus zis uas cuam tshuam rau tag nrho kev lag luam digital thiab txawm tias kev lag luam tsheb.
Qhov tseem ceeb tshaj plaws ntawm cov thev naus laus zis tshiab no yog tias nws tuaj yeem daws ob qhov teeb meem loj ntawm kev txhim kho kev nyab xeeb thiab kev ua siab ntev ntawm lub xov tooj ntawm tes roj teeb tib lub sijhawm. Hauv tib qhov loj me, piv nrog cov roj teeb lithium tam sim no, lub zog hluav taws xob yuav tsis txo qis. Raws li engineers, lub roj teeb lithium no yog ua raws li cov khoom siv hluav taws xob polymer-based thiab muaj cov yam ntxwv ntawm kev kho tus kheej thiab rov ua dua tshiab.
Tam sim no, cov roj teeb lithium siv cov kua electrolytes. Yog hais tias lub roj teeb puas loj heev los yog rhuab, nws yuav chemically react nrog cov electrodes. Ua rau lub roj teeb lithium ntes hluav taws lossis tawg. Tab sis hom tshiab lithium roj teeb no siv cov khoom sib txuas tshwj xeeb polymer, cov electrolyte tshiab yuav tsis decompose tab sis yuav nyuaj dua thaum rhuab. Qhov no txhais tau hais tias lub roj teeb lithium yuav tsis ntes hluav taws lossis tawg thaum cua sov.
Txawm li cas los xij, hom lithium roj teeb no yuav tsis ntes hluav taws thiab tawg thaum nws raug cua sov lossis puas los ntawm sab nraud. Tab sis Brian Jing, tus tub ntxhais kawm ntawv tshawb fawb thiab engineering kawm tiav hauv University of Illinois, tau hais tias txawm tias cov khoom siv polymer lossis ceramic electrolytes tau raug suav tias yog lwm txoj hauv kev, lawv nyiam yaj ntawm qhov kub siab uas tsim tawm hauv lub roj teeb. Nws tseem yog ib qho tsim nyog yuav tsum siv cov kab sib txuas sib txuas los tsim cov roj hmab zoo li lithium conductors los daws qhov teeb meem no. Nws muaj lub neej ua haujlwm ntev dua li cov khoom siv electrolyte nyuaj, tab sis nws tsis tuaj yeem kho nws tus kheej thiab nyuaj rau rov ua dua.
Hauv kev teb rau qhov teeb meem no, ib pab neeg ua haujlwm ntawm University of Illinois tau tsim ib txoj hauv kev los ua cov sib txuas sib txuas kom cov khoom siv polymers lossis ceramic electrolytes tuaj yeem sib pauv cov tshuaj tiv thaiv thiab pauv cov saw hlau polymer ntawm lawv. Qhov no tso cai rau cov polymer kom tawv thaum rhuab thiab tuaj yeem kho nws tus kheej, uas txo cov kev loj hlob ntawm dendritic lithium dendrites. Tsis tas li ntawd, tsis muaj zog acid lossis kub siab yuav tsum tau decompose cov polymer. Nws tsuas yog yuav tsum tau soluble hauv dej ntawm chav tsev kub. Yog li ntawd, hom tshiab lithium roj teeb no yuav tsis cuam tshuam rau ib puag ncig thiab yog ib puag ncig zoo heev.
Txawm li cas los xij, thev naus laus zis tseem tsis tau ua lag luam, tab sis pab pawg engineers ntawm University of Illinois tau hais tias nws yuav ua qhov zoo tshaj plaws los coj cov thev naus laus zis no mus rau kev lag luam. Txij thaum ntawd los, cov xov tooj ntawm tes nruab nrog hom tshiab lithium roj teeb yuav tsis ntes hluav taws thiab tawg, thiab yuav muaj roj teeb ntau dua.
