Them 70% kev tawg tshiab hauv ob peb feeb

Cov roj teeb lithium yog cov khoom siv hluav taws xob paub zoo uas tam sim no siv hauv cov xov tooj ntawm tes, khoos phis tawj thiab lub tsheb hluav taws xob. Tab sis lithium roj teeb kuj paub txog lawv lub neej ntev thiab lub neej luv. Tsis ntev los no, ib pab neeg los ntawm Singapore’s Nanyang Technological University (Nanyang Technological University) tau tsim ib hom tshiab ceev ceev. Lub roj teeb no tuaj yeem them tag nrho nrog 70% ntawm lub zog hauv ob feeb thiab tuaj yeem siv tau 20 xyoo, uas yog 10 npaug ntev dua lub roj teeb thaum lub sijhawm.

Cov roj teeb lithium feem ntau yog tsim los ntawm cov ntaub ntawv zoo electrode (xws li lithium cobalt oxygen), electrolyte thiab cov ntaub ntawv tsis zoo electrode (xws li graphite). Thaum lub sij hawm them tus txheej txheem, lithium ions precipitate los ntawm lithium cobalt-oxygen lattice ntawm lub anode thiab yog embedded nyob rau hauv lub flake graphite los ntawm cov electrolyte. Thaum lub sij hawm tso tawm, lithium ions khiav tawm ntawm lub flake graphite lattice thiab muab tso rau hauv lithium cobalt oxygen los ntawm electrolyte. Cov roj teeb lithium kuj tseem hu ua pob zeb lub rooj zaum roj teeb vim tias lawv hloov mus los ntawm qhov zoo thiab tsis zoo electrodes thaum them thiab tawm. Nyob rau hauv xyoo tas los no, cov kws tshawb fawb tau tsim cov roj teeb lithium tshiab, tshwj xeeb tshaj yog cov roj teeb uas muaj peev xwm loj lithium-sulfur, lithium-oxygen roj teeb thiab nano-silicon roj teeb, tab sis vim lawv muaj kev ntxhov siab, tus nqi siab, thiab kev pabcuam luv luv, muaj ntau yam teebmeem. tsis tau nce qib.

Cov roj teeb lithium qub tsis tuaj yeem them sai sai, feem ntau yog vim muaj kev nyab xeeb ntawm graphite electrodes. Thaum lub roj teeb ua haujlwm, cov khoom siv electrolyte membrane yog tsim rau ntawm qhov chaw ntawm lub electrode, uas yuav thaiv cov footsteps ntawm lithium ions thiab ua rau lawv ceev. Qhov tshwj xeeb ntawm hom tshiab lithium roj teeb no yog tias nws siv ultra-ntev titanium dioxide nanotube gel ua cov cathode es tsis txhob siv cov khoom siv graphite. Cov khoom siv tshiab no tsis tsim cov khoom siv electrolyte, thiab lithium ions tuaj yeem tso tau sai, yog li ua tiav kev them nyiaj sai. Vim yog cov qauv tshwj xeeb ntawm ib-dimensional titanium dioxide nanogel, lub roj teeb tshiab tau ua tiav ntawm kev ua haujlwm ntawm lub neej, uas tuaj yeem rov ua dua kaum tawm txhiab zaus. Ntawm tus nqi ntawm ib hnub, nws tuaj yeem siv rau ntau tshaj 20 xyoo. Tsis tas li ntawd, titanium dioxide (feem ntau hu ua titanium dioxide) siv nyob rau hauv txoj kev tshawb no muaj tus nqi qis, ua haujlwm yooj yim, rov ua haujlwm zoo, muaj kev ntseeg siab, thiab tuaj yeem txuas seamlessly nrog cov thev naus laus zis uas twb muaj lawm, thiab nws cov ntawv thov kev lag luam muaj dav heev.

Cov roj teeb lithium tau tawm hauv xyoo 1970s. Xyoo 1991, Sony tau tshaj tawm thawj cov roj teeb lithium ua lag luam, uas tau hloov pauv cov khoom siv hluav taws xob. Txawm hais tias cov roj teeb lithium tau siv dav, lawv cov roj teeb lub neej thiab kev pabcuam lub neej tsis tau ua tiav cov txiaj ntsig zoo, uas tseem txwv txoj kev loj hlob sai ntawm cov tsheb hluav taws xob thiab lwm yam kev lag luam. Qhov kev hloov tshiab no tuaj yeem muaj qhov cuam tshuam dav hauv ntau qhov chaw. Hauv cov khoom siv txawb, cov roj teeb tshiab tuaj yeem tiv thaiv kev tiv thaiv ntawm qee yam khoom siv hluav taws xob. Kev lag luam tsheb hluav taws xob kuj tseem yuav tau txais txiaj ntsig zoo, tsis yog vim tias lub sijhawm them nqi tuaj yeem txo qis los ntawm ob peb teev mus rau ob peb feeb, tab sis kuj vim tias cov neeg siv yuav tsis tas yuav hloov cov roj teeb kim (kwv yees li $ 10,000) los txhawb cov txiaj ntsig ntxiv. hluav taws xob tsheb.

Txawm li cas los xij, nyob rau lub sijhawm no, kev txhim kho ntawm cov roj teeb lithium tab tom ntsib teeb meem: yog tias koj xav kom muaj peev xwm, koj yuav tsum txi them ceev thiab lub voj voog lub neej, uas yog qhov nyuaj rau kev tswj kom muaj peev xwm. Nyob rau hauv lub neej yav tom ntej, los hloov cov roj teeb, ntawm ib sab, nws yog ib qho tsim nyog yuav tsum tau ua tiav cov kev tshawb fawb txog kev nyab xeeb xws li cov khoom siv hluav taws xob thiab semi-solid electrolytes, ntawm qhov tod tes, nws yog ib qho tsim nyog yuav tsum tau ceev cov kev tshawb fawb thiab kev loj hlob ntawm lub peev xwm loj. Cov ntaub ntawv cathode kom ua tiav qhov kev sib tw hauv lub zog ceev ntawm lithium roj teeb. Hauv cov ntsiab lus, qhov zoo thiab tsis zoo electrodes thiab cov ntaub ntawv electrolyte ntawm lub roj teeb yuav tsum ua haujlwm ua ke kom muaj kev vam meej ntau dua ntawm daim ntawv thiab lub peev xwm.