Roj teeb kev laus yog tsim nyog rau kev them nyiaj sai lossis tsis yog "cov roj teeb tua hluav taws"

Author: Iflowpower – Portable Fais Fab Chaw Muag Khoom

Raws li cov lus ceeb toom, kev tshawb fawb tsis ntev los no ntawm micro-me me ntawm Lithium-ion roj teeb electrodes hauv NASTRACE, lub roj teeb tau them sai sai thiab tom qab ntawd siv lub zog siv hluav taws xob ceev ceev, kev puas tsuaj ntawm cov roj teeb yuav tsis zoo li cov kws tshawb fawb thiab cov txiaj ntsig ntawm kev them nqi qeeb thiab kev siv hluav taws xob kuj yuav exaggerated. Cov txiaj ntsig ntawm txoj kev tshawb fawb no tau sib tw "super charging" roj teeb dua li kev them nyiaj qeeb rau electrodes raws li xav tau, los ntawm Stanford University thiab US Department of Energy SLAC National Accelerator Lab Stanford University Materials and Energy Science (SIMES) Hais. Lawv kuj sawv cev rau cov kws tshawb fawb los yog yuav hloov lub roj teeb electrode lossis hloov txoj kev them nyiaj los txhim kho lub roj teeb lub neej.

"Cov ntsiab lus ntawm cov txheej txheem tshuaj lom neeg uas tshwm sim thaum lub electrodes thaum lub sij hawm them thiab tso tawm tsuas yog ib qho ntawm ntau yam ntawm lub roj teeb lub neej, tab sis qhov tseem ceeb no tsis tau nkag siab tag nrho ua ntej txoj kev tshawb fawb no," Kev tshawb fawb qib siab tus kws sau ntawv, Stanford University Material Science thiab tus pab xibfwb ntawm Tsev Kawm Ntawv ntawm Engineering, SiMes tau hais qhov no. "Peb tau pom qhov kev xav tshiab kawm txog kev laus roj teeb. "Cov txiaj ntsig kev tshawb fawb no tuaj yeem siv ncaj qha rau ntau lub lag luam niaj hnub lithium-ion roj teeb, oxides thiab graphite electrodes.

Txoj kev tshawb no tau luam tawm rau lub Cuaj Hlis 14th "Natural Materials". Pab neeg tshawb fawb tseem suav nrog cov kws tshawb fawb los ntawm Asmeskas MIT, Tebchaws Meskas Sandia National Laboratory, South Kauslim Samsung Top Technology thiab American Lawrence Berkeley National Laboratory. Ib qho laj thawj tseem ceeb rau kev soj ntsuam qhov poob ntawm ion roj teeb hauv lub roj teeb yog nthuav dav thiab ntsws thaum cov ions nqus thiab tso tawm hauv cov electrolyte thaum them thiab tawm.

Hauv txoj kev tshawb no, cov kws tshawb fawb tau kawm txog qhov zoo electrodes uas muaj billion lithium hlau phosphate nanoparticles. Yog tias feem ntau lossis tag nrho cov ions nquag koom nrog hauv kev them nyiaj thiab tawm, lawv yuav sib npaug nqus thiab tso tawm ions. Txawm li cas los xij, yog tias tsuas yog ib feem me me ntawm cov khoom nqus tag nrho cov ions, lawv feem ntau yuav tawg thiab puas, txo lub neej ntawm lub roj teeb.

Cov yam ntxwv thiab kev coj cwj pwm ntawm nanoparticles tsis sib haum nrog ib leeg. Txhawm rau txhawm rau tshawb xyuas qhov tseeb ntxiv, cov kws tshawb fawb tau tsim cov roj teeb me me, uas siv cov dej sib txawv los them lawv, thiab ceev nrooj cais lawv thiab yaug lub rooj sib txoos kom tsis txhob muaj cov txheej txheem them nqi / tso tawm. Cov kws tshawb fawb tom qab txiav cov electrodes nyias nyias thiab xa mus rau Berkeley National Laboratory nrog cov kab X hnyav ntawm cov khoom siv hluav taws xob siab tshaj plaws synchronization accelerator.

Kev tshuaj xyuas sai sai "Peb tuaj yeem kawm ntau txhiab tus electrode nanoparticles thiab tua cov duab sib txawv thaum lub sij hawm them nyiaj thiab tso tawm," said tus thawj kws sau ntawv, Stanford University, Li Yiyang (Yangli) tau hais qhov no. "Qhov kev tshawb fawb no yog thawj qhov kev tshawb fawb ntxaws thiab nthuav dav ntawm kev them nqi thiab kev tso tawm raws li kev them nqi sib txawv thiab kev tso tawm. "Los ntawm kev txheeb xyuas cov ntaub ntawv los ntawm kev siv MIT kev tshawb fawb thiab kev tsim kho, cov kws tshawb fawb tau pom tsuas yog ib feem me me ntawm cov nanoparticles nqus thiab tso tawm ions thaum them nyiaj, txawm tias cov txheej txheem no tshwm sim sai heev.

Txawm li cas los xij, thaum lub roj teeb raug tso tawm, cov khoom nthuav tawm tshwm sim: raws li tus nqi tso tawm muaj ntau tshaj li qhov txwv, ntau thiab ntau cov khoom pib synchronize lub ion, hloov mus rau hauv ib qho kev sib koom ua ke, kev puas tsuaj tsawg dua. Qhov no qhia tau hais tias cov kws tshawb fawb tuaj yeem cuam tshuam cov khoom siv hluav taws xob los yog cov txheej txheem no kom ntseeg tau tias lub roj teeb lub neej ntev dua, lossis kev them nqi sai dua thiab tso tawm. Raws li Li, cov kauj ruam tom ntej yog khiav lub roj teeb electrode rau ntau pua lossis ntau txhiab lub voj voog kom simulate lub ntiaj teb tiag.

Cov kws tshawb fawb vam tias yuav thaij duab ntawm lub roj teeb thaum lub sijhawm them thiab tawm, tsis cuam tshuam cov txheej txheem no thiab cais cov roj teeb. Qhov no yuav tsum muaj tseeb dua, thiab cov txheej txheem no tuaj yeem ua tau nyob rau hauv lub synchronous accelerator, xws li ALS lossis SLAC Stanford synchronous accelerator hluav taws xob qhov chaw. Li kuj tau hais tias pab pawg tshawb fawb tau ua haujlwm ze nrog zej zog kev lag luam, tshawb xyuas seb cov kev tshawb pom no yuav siv li cas rau kev thauj mus los thiab cov khoom siv hluav taws xob.

Txoj kev tshawb no tau txais lub Ntiaj Teb Innovation Development Project ntawm South Kauslim Samsung Top Technology, Stanford Engineering College thiab Prestocate Energy Academy, Samsung-Mit Energy Application Material Design Project thiab Fund Support for US Department of Energy. .