Nyob rau hauv cov qauv siv lead ua ntawm Lifepo4, cov pa atom yog nruj nreem kaw rau hauv rau tog.PO43-tetraonal thiab FEO6 octopus tsim cov pob txha spatial ntawm cov siv lead ua.LI thiab Fe tuav qhov sib txawv ntawm tus ntses ntses, thiab P tuav qhov sib txawv tetraonal.Lub FE occupies lub kaum sab xis txoj hauj lwm ntawm tus ntses ntses, thiab lub li occupies ib feem ntawm lub octopus.Lub FEO6 octopus txuas rau ib leeg ntawm BC nto ntawm cov siv lead ua, thiab Li6 octopus qauv ntawm B-axis kev taw qhia txuas rau hauv cov qauv saw.1 Feo6 octopus thiab 2 LiO6 octopus thiab 1 PO43-tetraonal co-edge.
Vim yog qhov tsis sib xws ntawm FEO6 co-edge octopus network, lub tshuab hluav taws xob tsis tuaj yeem tsim tau;Nyob rau tib lub sijhawm, PO43-tetraon tsuas yog txwv rau qhov ntim hloov pauv ntawm lub lattice, uas cuam tshuam rau lub cev qhuav dej thiab hluav taws xob diffusion ntawm LI +, uas ua rau cov hluav taws xob conductivity thiab ion diffusion ntawm LIFEPO4 cov khoom zoo thiab cov diffusion ntawm ion.Kev ua tau zoo yog tsawg heev.
Lub theoretical tshaj li Lifepo4 roj teeb yog siab dua (kwv yees 170mAh / g), thiab lub tso tawm platform yog 3.4V.LI + Retinate lub zog ntawm qhov zoo thiab qhov tsis zoo ntawm bipolar los siv cov kev them nyiaj thiab tawm, thiab cov tshuaj tiv thaiv oxidation tshwm sim thaum them nyiaj.Li + txav tawm ntawm tus ncej zoo, kos rau hauv cov ncej tsis zoo los ntawm electrolyte, thiab cov hlau hloov ntawm Fe2 + mus rau Fe3 +, thiab cov tshuaj tiv thaiv oxidation tshwm sim.
Sab laug ntawm lithium hlau phosphate roj teeb yog qhov zoo electrode tsim los ntawm lifpo4 cov khoom ntawm cov qauv txiv ntseej, uas txuas nrog lub zoo electrode ntawm lub roj teeb nrog aluminium ntawv ci.Ntawm sab xis yog qhov tsis zoo electrode ntawm lub roj teeb uas muaj cov pa roj carbon (graphite), uas txuas nrog rau qhov tsis zoo electrode ntawm tooj liab ntawv ci nrog lub roj teeb.Nyob rau hauv nruab nrab yog lub diaphragm ntawm lub polymer, uas cais cov zoo electrode los ntawm qhov tsis zoo electrode.Cov lithium ions tuaj yeem yog electrons los ntawm diaphragm thiab tsis tuaj yeem hla lub diaphragm.Lub roj teeb yog them nrog electrolytes, thiab lub roj teeb yog kaw los ntawm lub plhaub hlau.
Kev them nyiaj thiab tawm cov lus teb ntawm lithium hlau phosphate roj teeb yog nyob nruab nrab ntawm Lifepo4 thiab FEPO4.Thaum lub sijhawm them nyiaj, LIFEPO4 maj mam sib cais los ntawm lithium ion los ua FEPO4.Thaum lub sij hawm tso tawm, lub lithium ion embedded FEPO4 los ua LIFEPO4.
Thaum lub roj teeb them, lithium ions tau tsiv los ntawm cov hlau phosphate crystals mus rau saum npoo ntawm cov siv lead ua.Nyob rau hauv lub zog ntawm hluav taws xob teb, nkag mus rau hauv electrolyte, ces dhau los ntawm lub diaphragm, thiab ces tsiv mus nyob rau saum npoo ntawm graphite siv lead ua los ntawm electrolyte, thiab ces embedded rau hauv graphite lattice.
Nyob rau tib lub sijhawm, cov khoom siv hluav taws xob ua hluav taws xob aluminium foil collector electrode ntws mus rau qhov zoo electrode, thiab cov khoom siv tooj liab ntws los ntawm lub pob ntseg, roj teeb zoo kem, sab nraud Circuit Court, tsis zoo electrode kem, thiab pob ntseg tsis zoo rau lub roj teeb tsis zoo electrode, thiab ces ntws mus rau lub litteria tsis zoo electrode, Ua tus nqi tsis zoo electrode kom sib npaug.Lithium ions tau hloov mus ua hlau phosphate tom qab lithium hlau phosphate dehydrated.
Thaum lub roj teeb tawm, lithium ions raug tshem tawm los ntawm graphite siv lead ua, nkag mus rau hauv electrolyte, ces dhau los ntawm lub diaphragm, tsiv mus rau saum npoo ntawm lithium hlau phosphate los ntawm electrolyte, thiab tom qab ntawd rov muab tso rau hauv lub latch ntawm lithium. hlau phosphate.
Nyob rau tib lub sijhawm, cov khoom siv tooj liab tau ntws mus rau qhov tsis zoo ntawm cov khoom siv hluav taws xob ntawm cov hluav taws xob meridian, los ntawm cov ntawv ci txhuas ntawm cov ntawv txhuas ntawm lub pob ntseg ntawm lub pob ntseg, cov kab tsis zoo ntawm cov roj teeb, cov kab hluav taws xob sab nraud, cov ncej zoo, thiab qhov zoo polar pob ntseg rau lub roj teeb.Lithium zoo ncej ua rau cov nqi zoo mus txog qhov sib npaug.Lithium ions yog embedded tom qab hlau phosphate crystals, thiab hlau phosphate hloov mus rau lithium hlau phosphate.
Post lub sij hawm: Aug-07-2023