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ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Draagbare kragstasie verskaffer

Qhov tseem ceeb tshaj plaws yog cov hauv qab no: 1. Cov nyhuv ntawm electrolyte ntawm roj teeb kub tsis tshua muaj kub 1.1 Conductivity conductivity yog ib qho tseem ceeb rau kev ntsuas cov electrolyte kev ua tau zoo, uas txiav txim siab lub sab hauv kuj thiab magnification yam ntxwv ntawm cov electrode, thiab ntau dua conductivity yog qhov tseem ceeb rau kev ua tau zoo ntawm qhov kub thiab txias ntawm lithium ion roj teeb.

Los ntawm cov organic solvent foundations, yam tseem ceeb cuam tshuam rau conductivity yog lub dielectric tas li thiab viscosity ntawm cov kuab tshuaj. Qhov loj dua qhov hnyav dielectric tas li, qhov tsis muaj zog ntawm electrostatic siv lithium ions thiab anionic, yooj yim rau dissoderate, tus naj npawb ntawm cov dawb ions nce. Lub viscosity ntawm cov kuab tshuaj cuam tshuam rau kev txav mus los ntawm cov ions dawb, qhov loj dua qhov viscosity, qhov me me ntawm kev txav mus los, me dua qhov conductivity;

1.2 Cov khoom electrolyte theem interface (SEI zaj duab xis) Cov electrolyte muaj pes tsawg leeg tsis tsuas yog txiav txim siab ion conductivity ntawm LR electrolyte, tab sis kuj cuam tshuam rau kev tsim ntawm SEI zaj duab xis. Qhov xwm ntawm SEI daim nyias nyias, xws li lub pore, electron thiab ionic conductivity, lub peev xwm irreversible, tsis tshua muaj kub kev ua tau zoo, lub voj voog kev ua tau zoo thiab kev nyab xeeb ntawm lub roj teeb.

Zoo heev SE1 daim nyias nyias yuav tsum muaj cov organic solvent insoluble, tso cai rau dawb nkag mus thiab tawm electrodes thiab hnyav molecules tsis dhau, yog li tiv thaiv hnyav molecules los ntawm circulating electrode puas, txhim kho electrode voj voog lub neej. Ntxiv qhov tsim nyog tus nqi ntawm zaj duab xis-tsim additive rau lithium ion roj teeb electrolyte, txo qhov SEI zaj duab xis kuj, txhim kho qhov kub thiab txias ntawm lub roj teeb. 2 Cov txiaj ntsig ntawm cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob tsis zoo yog qhov ua tau zoo dua los ntawm kev txo qhov me me ntawm cov khoom siv electrode.

3 Tus nqi hloov hluav taws xob cuam tshuam rau qhov ntsuas kub tsis zoo Cov txheej txheem them nqi thiab kev tso tawm ntawm lithium ion roj teeb suav nrog cov txheej txheem sib kis ntawm lithium ion nyob rau hauv cov theem ua kua, thiab suav nrog cov txheej txheem hloov pauv ntawm electrode / electrolyte interface, characterizing qhov tsis kam ntawm cov txheej txheem hu ua Charge transmission resistance, hu ua electrochemical resistance resistance. Cov tshuaj tiv thaiv electrochemical yog qhov loj dua, qhia tias cov tshuaj tiv thaiv electrochemical tsis yooj yim, lossis tib lub sijhawm tam sim no, cov tshuaj tiv thaiv electrochemical yog hnub ci, qhov ntau tshaj qhov muaj peev xwm loj dua, uas yog, kev txhawb zog loj dua. Cov yam ntxwv cuam tshuam rau qhov kub thiab txias ntawm cov roj teeb lithium ion yog qhov nyuaj dua, thiab tsis muaj qhov sib xws.

SEI zaj duab xis tsis kam, cuam tshuam tus nqi hloov pauv tsis kam, diffusion coefficient hauv lithium ion cia electrode, thiab lwm yam, tuaj yeem dhau los ua qhov tseem ceeb cuam tshuam rau kev ua haujlwm kub ntawm cov roj teeb potassium ion hauv ib qho system. Xwb, xws li cov qauv ntawm lub roj teeb, qhov loj me me ntawm cov khoom siv electrode, cov txheej txheem kev npaj, cov khoom siv electrolyte, cov khoom zoo thiab tsis zoo electrode, qhov chaw electrode deg, porosity, electrode ntom, thickness, porosity thiab porosity ntawm cov nplaum rau electrolyte ntub dej, thiab lwm yam.

, cov xwm txheej no yuav dhau los ua qhov tseem ceeb cuam tshuam rau qhov kev ua haujlwm kub ntawm lithium ion roj teeb.