Daim Ntawv Roj Teeb yog dab tsi? Qhov zoo thiab kev siv ntawm daim ntawv roj teeb

Kev nce qib hauv roj teeb thev naus laus zis tau ua tau zoo heev, nrog kev tsim kho tshiab hauv graphite anodes, silicon anodes, thiab hlau-raws li anodes. Txhua qhov kev nce qib no tau lees tias muaj lub zog ntau dua, kev them nqi sai dua, nqi tsev qis dua, thiab ntau lub voj voog. Niaj hnub no, peb qhia cov roj teeb ntawv, uas ua rau muaj kev cia siab rau lub teeb yuag, kev ua haujlwm siab tshiab lub zog cia daws teeb meem.

Daim Ntawv Roj Teeb yog dab tsi?

Daim ntawv roj teeb yog ib hom roj teeb tshiab uas siv tshuab luam ntawv los luam cov ntaub ntawv electrode mus rau ib daim ntawv nyias nyias. Vim tias nws yog nyias li ntawv, nws feem ntau hu ua "daim ntawv roj teeb." Nws muab cov khoom siv roj teeb ib txwm muaj - cov khoom siv hluav taws xob, cov khoom siv hluav taws xob zoo thiab tsis zoo - nrog cov ntawv hloov tau yooj yim los tsim cov qauv roj teeb nyias nyias. Txawm hais tias nws yog hu ua daim ntawv roj teeb, nws tsis yog ua los ntawm cov ntawv nkaus xwb, tab sis daim ntawv tsim cov qauv tsim, muab nws yooj yim heev thiab malleability.

Lub hauv paus ntsiab lus ua haujlwm ntawm daim ntawv roj teeb zoo ib yam li cov roj teeb ib txwm muaj. Nws tsim hluav taws xob los ntawm cov tshuaj tiv thaiv ntawm qhov zoo thiab tsis zoo electrodes. Txawm li cas los xij, tsis zoo li cov roj teeb ib txwm muaj, cov roj teeb ntawv siv cov ntaub ntawv zoo ib puag ncig, muaj cov txheej txheem tsim khoom yooj yim dua, thiab tus nqi qis.

Cov qauv thiab kev ua haujlwm ntawm daim ntawv roj teeb

Cov roj teeb ntawv feem ntau muaj cov khoom hauv qab no:

Cov khoom siv hauv paus ntawm daim ntawv roj teeb yog ntawv, uas tshwj xeeb yog kho kom ua cov khoom siv hluav taws xob. Daim ntawv kho mob no ua tus qauv txhawb nqa rau lub roj teeb.

Zoo ib yam li cov roj teeb ib txwm muaj, cov roj teeb ntawv tseem xav tau cov electrodes zoo thiab tsis zoo los pab txhawb kev hloov ntawm cov hluav taws xob. Cov khoom siv electrode feem ntau suav nrog cov hlau oxides, cov khoom siv carbon, thiab lwm yam, uas yog siv ncaj qha rau ntawm daim ntawv.

Daim ntawv roj teeb kuj yuav tsum muaj cov electrolyte los ua ions. Cov electrolyte no feem ntau yog ua kua los yog gel daim ntawv thiab tuaj yeem nkag mus rau cov fibers ntawm daim ntawv kom ntseeg tau tias lub roj teeb ua haujlwm zoo. Thaum daim ntawv roj teeb txuas nrog lub voj voog, ions hauv electrolyte ntws los ntawm lub zog hluav taws xob, ua tiav cov txheej txheem them nqi thiab tawm, thiab muab lub zog rau cov khoom siv hluav taws xob.

Keeb kwm ntawm Daim Ntawv Roj Teeb

Xyoo 2009, Stanford University hauv California tau ua tiav "daim ntawv roj teeb," siv silicon nanowires los tsim lub roj teeb nrog kaum npaug ntawm kev ua haujlwm ntawm cov roj teeb lithium-ion ib txwm muaj. Thaum Lub Kaum Ob Hlis 2015, Swedish cov kws tshawb fawb tau tsim "daim ntawv" uas tuaj yeem siv los ua lub roj teeb, nrog kev ua haujlwm siab txaus los sib tw cov roj teeb supercapacitor zoo tshaj plaws ntawm kev ua lag luam.

Cov nanomaterials siv hauv daim ntawv roj teeb yog tshwj xeeb. Cov ntaub ntawv no muaj qhov loj me me thiab cov qauv ib-seem, uas yuav pab tau tus cwj mem ua los ntawm nanomaterials lo kom nruj rau daim ntawv. Qhov no ua rau lub roj teeb thiab supercapacitor muaj zog heev, nrog rau lub neej ntev txog li 40,000 tus nqi thiab tawm mus.

Zoo li cov roj teeb ib txwm muaj, cov roj teeb tshiab no kuj suav nrog cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov khoom sib cais. Tshwj xeeb, daim ntawv roj teeb yog tsim los ntawm cov ntawv cellulose uas muaj cov khoom siv hluav taws xob thiab cov electrolyte. Cov ntawv cellulose ua haujlwm ua tus cais. Cov electrodes yog carbon nanotubes sib xyaw rau hauv cellulose thiab lithium hlau siv rau nyias zaj duab xis ua los ntawm cellulose. Cov electrolyte yog cov tshuaj lithium hexafluorophosphate. Cov kws tshawb fawb los ntawm Rensselaer Polytechnic lub koom haum tsim cov ntawv tshiab no los ntawm kev sib xyaw peb cov khoom no rau hauv ib daim ntawv nyias nyias.

Cov kev tshawb fawb tau pom tias nyob rau hauv 2V voltage, daim ntawv tshiab no tuaj yeem tsim 10 milliamps tam sim no ib gram. Ntxiv rau nws txoj kev tsim khoom tshiab, daim ntawv tshiab no muaj ntau yam khoom tseem ceeb, xws li nws yooj yim. Txij li thaum nws cov ntsiab lus tseem ceeb yog cellulose, nws khaws qee cov yam ntxwv ntawm daim ntawv, nrog rau kev ua tau zoo. Cov txiaj ntsig kev sim qhia tau hais tias lub roj teeb no tuaj yeem tiv taus qhov kub thiab txias ntawm -70 ° C txog 150 ° C thiab ua haujlwm li qub.

Qhov zoo thiab kev siv ntawm daim ntawv roj teeb

Cov nanomaterials siv nyob rau hauv daim ntawv roj teeb yog qhov zoo tshaj plaws vim lawv txoj kab uas hla me me thiab ib-seem qauv, uas pab cov number case ua los ntawm nanomaterials bond nruj nreem rau daim ntawv. Qhov no ua rau lub roj teeb muaj zog heev thiab supercapacitor, nrog rau cov ntawv capacitors uas muaj peev xwm kav ntev txog 40,000 tus nqi thiab tawm mus.

Tsis zoo li cov roj teeb ib txwm muaj, cov roj teeb ntawv zam cov teeb meem ntawm cov hlau, lithium, thiab alkaline compound to. Lawv yog cov phooj ywg ib puag ncig thiab tuaj yeem ua tiav raws li cov khoom siv hauv tsev. Cov neeg tsim khoom thov tias cov roj teeb no kuj pheej yig heev. Lawv tuaj yeem siv los ua cov khoom siv hluav taws xob rau cov ntawv ntse, daim npav suab paj nruag, ntawv xov xwm hluav taws xob, thiab RFID (Xov tooj cua Zais ID) cim npe. Nrog rau txoj kev loj hlob sai ntawm RFID thev naus laus zis, lub peev xwm ua lag luam rau cov ntawv roj teeb yuav tsum ncav cuag ntau lab daus las yav tom ntej.

Daim ntawv thov teb ntawm daim ntawv roj teeb yog dav heev. Cov roj teeb no tuaj yeem siv rau hauv daim npav ntse, daim npav suab paj nruag, cim npe hluav taws xob, ntawv xov xwm hluav taws xob, RFID khoom, xov tooj ntawm tes, laptops, thiab lwm yam khoom siv. Lawv lub peev xwm muaj nuj nqis tseem ceeb heev.