Tsis ntev los no, nws tau pom tias qhov kub thiab txias tau poob qis, thiab lub roj teeb puv tom qab them, tab sis nws tsis muaj zog tom qab siv. Hauv qhov no, cia peb tham txog kev sib raug zoo ntawm lub roj teeb thiab qhov kub thiab txias:
If lithium roj teeb yog siv nyob rau hauv qhov kub thiab txias ib puag ncig, uas yog, qis dua 4℃, lub sijhawm ua haujlwm ntawm lub roj teeb kuj tseem yuav raug txo, thiab qee lub roj teeb lithium tseem tsis tuaj yeem them rau qhov chaw kub kub. Tab sis tsis txhob txhawj ntau dhau. Qhov no tsuas yog qhov xwm txheej ib ntus xwb, txawv ntawm kev siv nyob rau hauv ib puag ncig kub. Thaum qhov kub thiab txias, cov molecules hauv lub roj teeb yuav sov, thiab lub roj teeb yuav rov qab tau nws lub zog dhau los tam sim ntawd. Qhov kub siab dua, qhov ceev ntawm qhov txav ntawm cov anion thiab cation nyob rau hauv thawj cell, qhov ceev ntawm electron nce thiab poob ntawm ob lub electrodes, thiab qhov ntau dua qhov tam sim no.
Qhov cuam tshuam ntawm qhov kub thiab txias ntawm Internal Resistance ntawm roj teeb nyob rau hauv cov ntaub ntawv ntawmTsheb LojEngineering
Thaum tso tawm ntawm qhov ntsuas kub ntawm 0℃~ 30℃, lub internal kuj ntawm lub roj teeb txo nrog qhov nce ntawm qhov kub thiab txias. Ntawm qhov tsis sib xws, thaum lub roj teeb kub poob qis, qhov kev tiv thaiv sab hauv ntawm lub roj teeb maj mam nce, thiab lub zog sab hauv ntawm lub roj teeb hloov linearly nrog qhov kub thiab txias yog li ntawd, kev ua haujlwm kub ntawm cov roj teeb tawm hauv qhov ntau ntawm 0.℃~ 30℃. Cov conductivity ntawm electrolyte yog zoo, thiab diffusion ceev ntawm hydrogen ion thiab sulfate ion nyob rau hauv electrolyte rau active tshuaj kuj yog siab. Qhov no tsis tsuas yog txhim kho qhov concentration polarization nyhuv, tab sis kuj txhim kho cov tshuaj tiv thaiv electrode ceev, ntxiv txhim kho qhov cuam tshuam ntawm electrode.nictshuaj polarization, yog li lub peev xwm tawm ntawm lub roj teeb nce.
Thaum lub ambient kub poob qis dua 0℃, qhov kev tiv thaiv sab hauv yuav nce li ntawm 15% rau txhua 10℃poob hauv qhov kub thiab txias. Vim hais tias cov viscosity ntawm sulfuric acid daws yuav loj dua, qhov tshwj xeeb kuj ntawm sulfuric acid tov yuav nce, uas yuav ua rau cov nyhuv ntawm electrode polarization. Lub peev xwm roj teeb yuav txo qis heev.
Influence ntawmTemperature rauCpoob thiabDkev them nyiaj
Rov ua dua lub voj voog ntawm kev tso tawm thiab qis-voltage tas li voltage them. Nyob rau theem pib, qhov kub ntawm lub roj teeb tsis siab vim yog cov cua kub conduction. Yog hais tias lub voj voog ntawm kev them nyiaj thiab kev tso tawm rov qab, qhov kub ntawm electrolyte yuav siab heev.
Yog hais tias them nyiaj ntawm qhov kub thiab txias, qhov diffusion tam sim no ceev yuav txo qis, thaum lub sij hawm pauv tam sim no ceev txo tsis ntau, yog li cov concentration polarization intensifies, uas yuav ua rau kom txo tau ntawm kev them nqi efficiency ntawm qhov tod tes, lub saturation ntawm lub xeem tso tawm sulfate. ntawm qhov kub thiab txias ua rau kom tsis muaj zog ntawm cov roj teeb them thiab tawm cov tshuaj tiv thaiv, yog li txo qhov kev them nqi ntxiv.
Yog tias lub roj teeb raug them ntawm qhov kub thiab txias tshaj 10℃, lub polarization yog txo qis, thiab qhov kev sib cais thiab solubility ntawm txhuas sulfate tuaj yeem txhim kho. Tsis tas li ntawd, cov pa oxygen diffusion nce ntawm qhov kub siab dua, uas yuav txhim kho lub roj teeb them thiab kev tso tawm kom zoo raws li kev cuam tshuam ntawm cov ntsiab lus zoo.
Post lub sij hawm: Sep-16-2022