Lithium hlau phosphate thiab ternary lithium roj teeb, uas zoo dua?

Tam sim no siv nyob rau hauv lithium- ion roj teeb cathode cov ntaub ntawv feem ntau yog lithium manganate, lithium hlau phosphate, lithium cobaltate, ternary cov ntaub ntawv thiab lwm yam ntaub ntawv, tam sim no siv lub hwj chim roj teeb cathode feem ntau yog siv lithium hlau phosphate thiab ternary ob cov ntaub ntawv. Tom qab ntawd lithium hlau phosphate thiab ternary lithium roj teeb uas zoo dua? Kab lus no yuav qhia txog qhov zoo thiab qhov tsis zoo ntawm lithium hlau phosphate thiab ternary lithium roj teeb sib piv.

Lithium hlau phosphate roj teeb (LFP / LiFePo4)Lithium hlau phosphate roj teeb yog lithium{0}}ion roj teeb uas siv lithium hlau phosphate ua cov khoom siv cathode. Nws nta tsis muaj cov ntsiab lus tseem ceeb xws li cobalt, cov khoom siv qis qis thiab cov peev txheej ntau ntawm phosphorus thiab hlau tam sim no hauv ntiaj teb, yog li yuav tsis muaj teeb meem khoom siv. Nws qhov kev khiav hauj lwm voltage yog nruab nrab (3.2V), muaj peev xwm siab rau ib chav tsev qhov hnyav (170 mAh / g), lub zog tso tawm siab, them ceev ceev thiab lub neej voj voog ntev, thiab kev ruaj ntseg siab hauv qhov kub thiab txias ib puag ncig.

Qhov zoo
Piv nrog rau cov roj teeb lithium cobalt thiab lithium manganate ntau dua nyob rau hauv kev ua lag luam niaj hnub no, lithium hlau phosphate roj teeb muaj tsawg kawg yog tsib qhov zoo hauv qab no: kev nyab xeeb dua, kev pab lub neej ntev dua, tsis muaj cov hlau hnyav thiab cov hlau tsis tshua muaj (tus nqi qis ntawm cov khoom siv raw. ), kev them nyiaj yug ceev ceev, kev khiav hauj lwm kub ntau yam.
Qhov tsis zoo
Lithium Iron phosphate muaj qee qhov kev ua tau zoo, xws li muaj zog tsawg kawg thiab kev sib zog ua kom ntom ntom ntom ntawm lithium {{} ion roj teeb; tus nqi siab ntawm kev npaj cov khoom siv thiab cov nqi tsim khoom siv roj teeb, tsis muaj roj teeb tawm los thiab tsis zoo sib xws; cov khoom tsis sib xws; thiab teeb meem kev txawj ntse.

Ternary lithium roj teeb

Ternary lithium roj teeb feem ntau yog hais txog ternary polymer lithium roj teeb: cathode khoom siv lithium nickel cobalt manganate (Li (NiCoMn) O2) ternary cathode khoom ntawm lithium roj teeb. Raws li Ouyang Minggao ntawm Tsinghua University, cov khoom "ternary" raug xa mus rau hauv daim ntawv ntsuam xyuas no yog hais txog lub sij hawm ib txwm muaj "ternary fais fab roj teeb" uas cov electrode zoo yog ternary thiab cov electrode tsis zoo yog graphite. Nyob rau hauv qhov tseeb kev tshawb fawb thiab kev loj hlob daim ntawv thov, muaj ib tug zoo electrode yog ternary, qhov tsis zoo electrode yog lithium titanate, feem ntau hu ua "lithium titanate", nws cov kev ua tau zoo dua, lub neej ntev, tsis muaj feem xyuam rau lo lus "ternary khoom."

Qhov zoo
Ternary lithium roj teeb muaj lub zog ceev thiab kev ua haujlwm zoo dua li cov lithium cobaltate li qub. Tam sim no, nrog kev txhim kho tas mus li ntawm cov qauv thiab cov qauv kev ua kom zoo, lub nominal voltage ntawm lub roj teeb tau mus txog 3.7V thiab tau mus txog lossis dhau qib ntawm lithium cobalt -acid roj teeb raws li lub peev xwm.
Qhov tsis zoo
Ternary cov khoom siv lithium roj teeb feem ntau suav nrog lithium nickel cobalt aluminium acid thiab lithium nickel cobalt manganese acid, thiab lwm yam. Cov qauv kub ntawm cov nickel cobalt aluminium tsis ruaj khov, ua rau muaj kev nyab xeeb kub tsis zoo, thiab pH tus nqi siab dhau los ua rau cov monomer o. , uas yuav ua rau muaj kev phom sij, thiab cov nqi tam sim no siab heev.

Kev paub