Cov roj teeb lithium-ion yog ib qho yuav luag txhua qhov cuab yeej siv nrog qhov teeb meem loj: lawv qee zaum ntes hluav taws.
Cov yeeb yaj kiab ntawm cov neeg coob thiab cov neeg caij tsheb ntawm lub dav hlau JetBlue frantically nchuav dej rau hauv lawv lub hnab ev ntawv dhau los ua piv txwv tshiab ntawm kev txhawj xeeb txog cov roj teeb, uas tam sim no tuaj yeem pom nyob rau hauv yuav luag txhua yam khoom siv uas xav tau lub zog nqa tau.Ntau xyoo dhau los, tau muaj kev nce qib hauv cov xov xwm hais txog lithium-ion roj teeb hluav taws xob tshwm sim los ntawm lub tsheb kauj vab hluav taws xob, lub tsheb fais fab thiab lub laptops ntawm cov neeg caij tsheb.
Kev loj hlob ntawm kev txhawj xeeb rau pej xeem tau txhawb cov kws tshawb fawb thoob ntiaj teb los ua haujlwm txhawm rau txhim kho kev nyab xeeb thiab siv tau ntev ntawm lithium-ion roj teeb.
Cov roj teeb tshiab tau tawg nyob rau xyoo tas los no, nrog cov kws tshawb fawb tsim cov roj teeb uas muaj zog los ntawm kev hloov cov kua hluav taws xob hluav taws xob hauv cov roj teeb lithium-ion nrog cov khoom siv hluav taws xob ruaj khov dua xws li cov gels tsis muaj hluav taws xob, cov iav inorganic thiab cov khoom polymers.
Kev tshawb fawb luam tawm lub lim tiam dhau los hauv phau ntawv Journal Nature qhia txog kev nyab xeeb tshiab los tiv thaiv kev tsim cov lithium "dendrites," uas tsim thaum cov roj teeb lithium-ion overheat vim overcharging los yog ua puas lub dendritic qauv.Dendrites tuaj yeem ua cov roj teeb luv luv thiab ua rau muaj hluav taws kub.
Chongsheng Wang, tus xibfwb ntawm chemical thiab biomolecular engineering ntawm University of Maryland tau hais tias "Txhua txoj kev tshawb fawb ua rau peb muaj kev ntseeg siab ntau dua tias peb tuaj yeem daws qhov teeb meem kev nyab xeeb thiab ntau yam teeb meem ntawm lub tsheb hluav taws xob," said Chongsheng Wang, tus xibfwb ntawm chemical thiab biomolecular engineering ntawm University of Maryland thiab tus thawj coj ntawm txoj kev tshawb no.
Wang txoj kev loj hlob yog ib kauj ruam tseem ceeb rau kev txhim kho kev nyab xeeb ntawm lithium-ion roj teeb, hais tias Yuzhang Li, tus pab xibfwb ntawm kev tsim kho tshuaj lom neeg ntawm UCLA uas tsis koom nrog txoj kev tshawb no.
Lee tab tom ua haujlwm ntawm nws tus kheej kev tsim kho tshiab, tsim cov roj teeb lithium hlau txuas ntxiv uas tuaj yeem khaws 10 lub zog ntau dua li cov graphite electrode Cheebtsam hauv cov roj teeb lithium-ion ib txwm muaj.
Thaum nws los txog rau kev nyab xeeb ntawm lub tsheb hluav taws xob, Lee tau hais tias cov roj teeb lithium-ion tsis yog qhov txaus ntshai lossis ntau npaum li cov pej xeem xav, thiab kev nkag siab txog lithium-ion roj teeb kev nyab xeeb yog qhov tseem ceeb.
Nws tau hais tias "Txhua lub tsheb hluav taws xob thiab cov tsheb qub muaj kev pheej hmoo," nws hais."Tab sis kuv xav tias lub tsheb hluav taws xob muaj kev nyab xeeb dua vim tias koj tsis zaum ntawm nkas loos cov kua hluav taws xob."
Lee hais ntxiv tias nws yog ib qho tseem ceeb uas yuav tsum tau ua kev tiv thaiv kev tiv thaiv overcharge los yog tom qab hluav taws xob tsheb sib tsoo.
Cov kws tshawb fawb kawm txog lithium-ion roj teeb hluav taws xob ntawm lub koom haum tshawb fawb hluav taws xob tsis muaj txiaj ntsig tau pom tias hluav taws kub hauv tsheb hluav taws xob sib piv rau kev siv hluav taws xob hauv cov tsheb siv roj av, tab sis hluav taws kub hauv tsheb hluav taws xob yuav kav ntev dua, xav tau dej ntau dua los tua thiab muaj ntau dua. yuav ignite.dua.ob peb teev tom qab cov nplaim hluav taws ploj vim yog lub zog seem hauv lub roj teeb.
Victoria Hutchison, tus thawj coj loj ntawm lub hauv paus txoj haujlwm tshawb fawb, hais tias lub tsheb hluav taws xob ua rau muaj kev pheej hmoo tshwj xeeb rau cov neeg tua hluav taws, thawj cov neeg teb thiab cov neeg tsav tsheb vim lawv cov roj teeb lithium-ion.Tab sis qhov ntawd tsis tas txhais tau tias tib neeg yuav tsum ntshai lawv, nws hais ntxiv.
Hutcheson tau hais tias "Peb tseem tab tom sim nkag siab tias lub tsheb hluav taws xob hluav taws xob yog dab tsi thiab qhov zoo tshaj plaws los tawm tsam lawv," Hutcheson tau hais.“Nws yog kev kawm nkhaus.Peb tau muaj lub tsheb sib xyaw ua ke rau lub sijhawm ntev tam sim no, nws tsis paub ntau dua, tab sis peb tsuas yog yuav tsum kawm yuav ua li cas daws cov xwm txheej no kom raug. "
Kev txhawj xeeb txog hluav taws xob tsheb hluav taws xob kuj tseem tuaj yeem thawb tus nqi pov hwm, hais tias Martti Simojoki, tus kws tshaj lij tiv thaiv kev poob ntawm International Union of Marine Insurance.Nws hais tias kev pov hwm tsheb hluav taws xob raws li cov khoom thauj tam sim no yog ib qho ntawm cov kab kev lag luam zoo tshaj plaws rau cov neeg tuav pov hwm, uas tuaj yeem ua rau tus nqi ntawm kev tuav pov hwm rau cov neeg tab tom nrhiav thauj hluav taws xob tsheb vim qhov pom tias muaj kev pheej hmoo ntawm hluav taws.
Tab sis kev tshawb fawb los ntawm International Union of Marine Insurance, ib pab pawg neeg tsis muaj txiaj ntsig sawv cev rau cov tuam txhab pov hwm, pom tias cov tsheb hluav taws xob tsis muaj kev phom sij lossis pheej hmoo ntau dua li cov tsheb qub.Qhov tseeb, nws tseem tsis tau lees paub tias qhov hluav taws kub loj tshaj tawm ntawm ntug dej hiav txwv Dutch lub caij ntuj sov no yog tshwm sim los ntawm lub tsheb hluav taws xob, txawm hais tias cov xov xwm hais txog lwm yam, Simojoki tau hais.
"Kuv xav tias tib neeg tsis kam txais kev pheej hmoo," nws hais.“Yog tias qhov kev pheej hmoo siab, tus nqi yuav siab dua.Thaum kawg ntawm hnub, cov neeg siv khoom kawg them rau nws. "
Kho (Lub Kaum Ib Hlis 7, 2023, 9:07 teev sawv ntxov ET): Ib qho dhau los ntawm tsab xov xwm no sau tsis raug lub npe ntawm tus thawj coj ntawm txoj kev kawm.Nws yog Wang Chunsheng, tsis yog Chunsheng.