Thaum qhov kub thiab txias qis, cov yam ntxwv ntawm lub zog ntawm lithium hlau phosphate roj teeb yuav txo qis, thiab thaum mob hnyav, nws yuav cuam tshuam rau kev siv ib txwm. Yog li ntawd, kev tiv thaiv kev tiv thaiv yuav tsum tau ua. Cov roj teeb lithium hlau phosphate tsis tuaj yeem siv thaum kub qis dua 10 degrees Celsius. Txawm hais tias nws yog ternary lithium roj teeb lossis lithium hlau phosphate roj teeb, qhov kub thiab txias qis dua 10 degrees Celsius yuav muaj qee yam cuam tshuam rau kev ua haujlwm ntawm lub roj teeb.
Ntawm qhov kub thiab txias, qhov kev tiv thaiv sab hauv thiab lub peev xwm ntawm lithium hlau phosphate roj teeb yuav txo qis, thiab txawm tias ua rau tsis muaj kev puas tsuaj rau lub roj teeb cov qauv. Piv nrog ternary lithium roj teeb, lithium hlau phosphate roj teeb ua haujlwm tsis zoo thaum lub caij ntuj no. Thaum lub ambient kub yog rho tawm 10 degree, lub peev xwm ntawm lithium hlau phosphate roj teeb yuav lwj los ntawm 40-50%; Thaum qhov kub nce mus txog 20 degree, lub roj teeb yuav poob nws lub peev xwm tawm ncaj qha. Yog li ntawd, qhov kev txwv qis ntawm kev ua haujlwm kub ntawm lithium hlau phosphate roj teeb yog nyob ib puag ncig rho tawm 20 degree (txog rho tawm 30 degree rau ternary lithium roj teeb).
Yog vim li cas yog vim li cas lithium hlau phosphate roj teeb muaj xws li tsis zoo paug kev ua tau zoo nyob rau hauv qis kub ib puag ncig nyob rau hauv lub caij ntuj no yog tseem yog vim li cas rau cov yam ntxwv ntawm nws raw cov ntaub ntawv. Cov khoom siv hluav taws xob zoo ntawm lub roj teeb, lithium hlau phosphate, muaj cov khoom siv tsis zoo thiab ua rau polarization, ua rau lub roj teeb muaj peev xwm degradation.
Lub viscosity ntawm cov electrolyte nyob rau hauv lithium hlau phosphate roj teeb kuj nce nyob rau hauv tsis tshua muaj kub ib puag ncig, ua rau kom ib tug nce nyob rau hauv lub migration impedance ntawm lithium ions, ib tug qeeb diffusion tus nqi ntawm lithium ions, thiab ib tug txo nyob rau hauv cov roj teeb kev ua si. Nyob rau tib lub sijhawm, cov binder ntawm lithium hlau phosphate roj teeb kuj raug cuam tshuam los ntawm qhov kub thiab txias, ua rau txo qis hauv roj teeb kev ua haujlwm.
Tsis tas li ntawd, nyob rau hauv ib puag ncig uas tsis muaj qhov kub thiab txias, SEI zaj duab xis ntawm qhov tsis zoo electrode ntawm lithium hlau phosphate roj teeb kuj yuav thicker, thiab nws impedance yuav nce raws li, ua rau txo qis ntawm lithium ion conduction ntawm SEI films. Yog li ntawd, kev ua kom muaj zog hnyav ntawm lithium hlau phosphate roj teeb nyob rau lub caij ntuj no yog cov yam ntxwv ntawm lawv cov khoom. Tam sim no, cov automakers loj tsuas tuaj yeem txo qhov muaj peev xwm degradation los ntawm kev txhim kho cov roj teeb kub tswj thiab muab cov cua kub cua sov ua haujlwm.
