Them lithium roj teeb anode cov khoom nthuav dav yog qhov nyuaj rau kev kov yeej txoj kev tshiab ntawm Tebchaws Meskas thiab Tuam Tshoj R <000000> D pab pawg

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Raws li kev tshaj tawm xov xwm txawv teb chaws, txij li silicon muaj lub zog loj, nws tau dhau los ua cov khoom siv roj teeb lithium-ion anode zoo nkauj heev. Txawm li cas los xij, nyob rau lub sijhawm them nyiaj, qhov nthuav dav tuaj yeem ncav cuag 300% thaum silicon hauv lub xov tooj ntawm tes cuam tshuam nrog lithium. Thiab dhau sijhawm, nws yuav txo qhov kev ua tau zoo, luv luv ntawm lub roj teeb, thiab thaum kawg ua rau cov roj teeb seem.

Txhawm rau txhim kho qhov tsis zoo saum toj no thiab feem ntau tuav lub zog ceev ntawm lub roj teeb, lub anode ntawm lithium-ion roj teeb yog tam sim no ua haujlwm siv silicon monoxide (SiOx, X≈1). Daim ntawv thov ntawm silicon-based oxide anode yog siab heev, thiab lub voj voog kev ua tau zoo kuj tseem txhim kho. Txawm li cas los xij, cov khoom siv tseem tsis tiv thaiv kev hloov pauv, thiab cov conductivity tsis muaj zog.

Muaj ntau txoj haujlwm tshawb fawb tau ua tiav los daws cov teeb meem saum toj no. Niaj hnub no, pab pawg tshawb fawb hauv kuv lub tebchaws thiab Tebchaws Meskas tau tshaj tawm cov txiaj ntsig kev tshawb fawb thiab pom ob txoj hauv kev txhim kho tshiab. Cov txiaj ntsig kev tshawb fawb ntawm US pab pawg: Non-adhesive silica oxide / carbon complex Kentucky University (UNIVERSITYE) pab pawg tshawb fawb Tom qab sib tov silicon-based oxide particles thiab kraftlignin, synthesizing ib qho kev ua tau zoo uas tsis yog-bonded Silicon-based oxide / carbon complex (Binder-freesiox / c) rau kev ua electrodes ntawm lithium ion.

Tom qab kev kho cua sov, lub lignin tsim ib lub cev conductive (ConductiveMatrix), uas tuaj yeem ua raws li cov khoom siv silicon-based oxide ntau kom ntseeg tau tias cov khoom siv hluav taws xob, kev sib txuas, thiab hloov mus rau lithiation / deodentation cov tshuaj tiv thaiv thaum lub sij hawm lithiation / Delithiation. Hloov ntim. Cov khoom siv no tsis tas yuav siv cov khoom siv sib xyaw ua ke lossis cov khoom siv hluav taws xob.

Kev ua tau zoo ntawm cov electrode ua los ntawm cov khoom sib xyaw yog qhov zoo heev. Piv nrog rau qhov me me silicon-raws li oxide electrode (160%) ntawm lub ntim hloov pauv, cov khoom siv hluav taws xob electrochemical zoo heev, ferbonmatrix loj, thiab tuaj yeem hloov mus rau qhov hloov pauv. Cov txiaj ntsig ntawm peb pab pawg tshawb fawb: Micro SiOx / C Cabens (Core-Shell) Composite kuv lub teb chaws pab neeg tshawb fawb tau tsim cov kev daws teeb meem zoo los npaj micro SiOx / C core plhaub complex.

Cov pab pawg tshawb fawb sib xyaw citricacid thiab pob zeb milling silicon-based oxide ua rau nws cov pa roj carbon, ua raws li cov ntaub ntawv SiOx / C-core plhaub complex - SiOx micro core thiab citrate carbon CONFORMALCARBONSHELL. Cov pa roj carbon plhaub tau zoo heev rau cov hluav taws xob conductivity ntawm silicon-based oxides, thiab lub ntim hloov pauv hloov mus rau lithiuming / deod lithium cov tshuaj tiv thaiv. Cov electrodes ua los ntawm SiOx / C complex yog 1296.

3mAh / g, thiab COMBICEFFICIENCY yog siab li 99.8%, thiab lub peev xwm tuav tau yog 65.1% (843.

5mAh / g) tom qab them nqi thiab tawm yog 200 zaug. Raws li kev tshawb fawb pab neeg, qhov tso tawm efficiency ntawm lub complex yog heev zoo heev. Cov txheej txheem tuaj yeem ua tiav ntau lawm, tus nqi tsim nyog, tuaj yeem tsim cov khoom siv anode ua tau zoo los ntawm SiOx / C complex composites.