Dab Tsi Ua Siab Them Nqi Tawm Hauv Cov Ntiag Tuaj Luv NMC Cathode?

Cov neeg tshawb nrhiav uas yog coj los ntawm University of California San Diego pawg neeg tau luam tawm haujlwm hauv Journal Energy Qhov Kev Tshawb Fawb hais tias yog vim li cas thiaj ua rau kev ua haujlwm txo qhov "qhov hluav taws xob ploj" uas tam sim no ua rau cov chav kawm ntawv cathode hu ua Lithium-rich NMC (nickel magnesium cobalt) foamed oxides.

Cov dislocations yog ntxiv cov atomic layers uas tsis haum rau hauv lub txwv tsis pub muaj txheej txheem periodic crystal qauv, "said Andrej Singer, tus thawj coj ua tau ua txoj hauj lwm no ua ib tug neeg tshawb fawb postdoctoral ntawm UC San Diego." Discovering cov dislocations yog ib tug loj surprise: yog hais tias "Peb tau xav tias cov kev qhia ntxiv txog atomic ntog kom tshwm sim hauv kev sib txawv kiag li," said Singer, uas tam sim no nyob rau hauv cov kws qhia ntawv ntawm Cornell University.Thaum muab cov pov thawj pom nrog qhov kev tshawb xav, pawg neeg tshawb fawb tshawb pom tias lub nucleation ntawm no hom kev dislocation tshwm sim hauv qhov hluav taws xob piam sij.

Cov kev tshawb fawb tau piav nyob rau hauv Daim Ntawv Txog Zog Zog yuav ua rau cov khoom siv cathode tshiab rau cov roj teeb lub xeev. Muaj ntau cov neeg tshawb nrhiav, suav nrog Meng, xav txog lub xeev cov roj teeb kom ua ib qho ntawm feem kev cog lus pheej hmoo siab txog yav tom ntej. Lithium-rich NVC cathodes, piv txwv li, khiav hauj lwm ntawm high voltage thiab vim li ntawd nws thiaj li yuav paired nrog khoom xeev electrolytes, uas tseem khiav lag luam ntawm high voltage. Feem ntau ntawm cov paj laum hauv lub xeev cov roj teeb tau los ntawm qhov tseeb tias cov khoom hauv lub xeev electrolytes ntseeg tau tias yuav muaj kev ruaj ntseg dua cov kua roj electrolytes uas siv hauv Lithium-ion roj teeb roj teeb.

36v hluav taws xob caij tsheb kauj vab