Tshwj xeeb nco ntsoov qhov ua rau ntawm lithium ion roj teeb tawg

Awdur: Iflowpower - Mofani oa Seteishene sa Motlakase se nkehang

Lub hauv paus ntsiab lus ntawm lithium ion roj teeb Lub roj teeb lithium ion tseem ceeb los ntawm qhov zoo electrode, tsis zoo electrode, diaphragm, thiab electrolyte. Qhov zoo thiab qhov tsis zoo electrode txheej yog nruj nreem dov ua ke, thiab txheej txheej yog sib cais los ntawm txheej, thiab qhov zoo thiab qhov tsis zoo yog raus rau hauv cov electrolyte. Cov roj teeb cylindrical thiab cov roj teeb square tau siv los ua lithium ion roj teeb qauv roj teeb, uas yog tsim los ntawm ob qhov sib txawv lithium-insert compounds, yog qhov zoo thiab qhov tsis zoo.

Cov khoom siv ntawm node yog ib qho tseem ceeb rau kev hloov pauv hlau oxides, hlau oxides, hlau sulfides, thiab lwm yam. Cov khoom lag luam zoo electrode feem ntau siv hauv cov roj teeb lithium-ion yog cov khoom siv anode siv dav tshaj plaws rau kev hloov pauv hlau oxides tseem ceeb hauv cov khoom siv tsis yog xim hlau, cov hlau tsis yog hlau sib xyaw, hlau oxides, thiab lwm yam. Lithium hlau phosphate yog coated Cov khoom siv electrode electrode yog tsim los ntawm cov khoom siv hluav taws xob txiav txim siab qhov hluav taws xob thiab lub peev xwm electrolyte ntawm lub roj teeb uas yog ib feem tseem ceeb ntawm lithium ion roj teeb, thiab plays ib qho tseem ceeb ntawm kev siv tam sim no kis tau tus mob thaum lub sij hawm them roj teeb thiab tawm.

Txhawm rau tiv thaiv cov khoom siv hluav taws xob zoo thiab tsis zoo rau hauv cov electrolyte vim yog ib leeg, qhov zoo thiab tsis zoo electrolytic diaphragm raug cais. Lub roj teeb lithium ion thib ob yog lub roj teeb uas tsis zoo hauv lithium ion concentration. Kev them nyiaj LI yog muab los ntawm qhov zoo electrode, thiab qhov tsis zoo electrode yog embedded rau hauv qhov tsis zoo electrode, qhov zoo electrode yog nyob rau hauv ib tug lithium lub xeev, cov nyiaj them nqi ntawm cov electrons yog muab los ntawm lub sab nraud Circuit Court los xyuas kom meej qhov sib npaug ntawm tus nqi.

Cov paug tawm yog cuam tshuam nrog cov paug tawm, thiab Li raug tshem tawm los ntawm qhov tsis zoo electrode thiab yog embedded rau hauv cov khoom siv cathode los ntawm electrolyte. Nyob rau hauv ib txwm them thiab tso tawm cov xwm txheej, lithium ions tau kos thiab tshem tawm ntawm cov txheej txheem carbon thiab cov txheej txheem txheej, uas feem ntau tsuas yog ua rau kev hloov pauv ntawm qhov sib txawv ntawm cov khoom txheej yam tsis ua rau lawv cov qauv siv lead ua. Thaum lub sij hawm tus nqi thiab tso tawm, cov qauv tshuaj ntawm cov khoom siv electrode tsis zoo yog qhov hloov pauv.

Qhov sib npaug ntawm cov tshuaj tiv thaiv ion yog qhov tsis tuaj yeem ntxiv kev ntsuas kev ruaj ntseg hauv lub roj teeb, vim tias tam sim no nws tab tom nrhiav kom muaj peev xwm ua kom lub roj teeb muaj zog. Txij xyoo 1991, lub roj teeb lithium-ion tau ua lag luam rau tam sim no, lub zog muaj peev xwm ntawm lithium-ion roj teeb tau ntxiv plaub lossis tsib zaug lithium-ion roj teeb tawg mechanism. Yog li peb nkag siab nws ua haujlwm li cas, yog li peb tuaj yeem nkag siab tias yog dab tsi tshwm sim los ntawm lithium ions.

Roj teeb tawg. Them thiab tso tawm ntawm lithium ceg siv lead ua kev loj hlob roj teeb yog kev xa rov qab ntawm lithium ions. Thaum them nyiaj, lithium ions raug txo kom cov hlau lithium embedded hauv qhov tsis zoo electrode.

Feem ntau, lithium tuaj yeem muab tso rau hauv cov qauv interlayer, uas tuaj yeem loj hlob nyob rau hauv qhov chaw ntawm cov electrode vim qhov tsis paub meej ntawm kev loj hlob, thiab cov txheej txheem loj hlob muaj cov qauv stabbed tib yam li cov ceg, uas tuaj yeem ua rau lub diaphragm ntawm lub roj teeb puas, ua rau luv luv hauv lub roj teeb. Thiab roj teeb tawg. Yog tias muaj qhov tsis xws luag hauv lub roj teeb, cov hlau txuas txuas qhov zoo tsis zoo electrode los ntawm cov txheej txheem insulating ntawm lub roj teeb, hloov cov kev taw qhia ntawm cov khoom tam sim no, ua rau cov khoom siv sab hauv degrade, ua rau cov tshuaj tiv thaiv, tso cua sov ntau, ignit lub roj teeb pob roj teeb Charger peb lub roj teeb tam sim no muaj kev tiv thaiv uas pub rov qab cov roj teeb hluav taws xob los tiv thaiv overcharge, uas yuav ua rau overcharge, roj teeb tiv thaiv kab mob los yog cathode tiv thaiv kab mob. Txuas ntxiv mus muab tshem tawm thiab muab tso rau hauv cov khoom tsis zoo electrode.

Yog hais tias qhov siab tshaj plaws lithium embedded nyob rau hauv cov pa roj carbon tsis zoo electrode, ntau lithium yuav tso rau ntawm cov khoom tsis zoo electrode nyob rau hauv daim ntawv ntawm lithium hlau, zoo heev txo cov stability ntawm lub roj teeb. Txawm tias qhov tawg yog cuam tshuam nrog lub roj teeb lithium-ion, tsis yog tsuas yog lub roj teeb muaj peev xwm txhim kho, tab sis kev nyab xeeb kev ua haujlwm tsis tuaj yeem tsis quav ntsej. Tam sim no qee cov tuam txhab roj teeb muaj cov qauv kev nyab xeeb siab, txawm tias yuav ntes cov roj teeb.

Peb nkag siab tias thaum tus ntsia thawv nkag mus rau hauv lub roj teeb, nws yuav txuas ncaj qha mus rau qhov zoo tsis zoo, uas yuav ua rau muaj kev cuam tshuam hauv lub cev. Cov gel electrolyte thiab polymer electrolyte kuj tseem nyob rau hauv kev tshawb nrhiav ntxiv, tshwj xeeb tshaj yog kev txhim kho ntawm polymer electrolyte, tsis muaj kua organic electrolyte volatilization nyob rau hauv lub roj teeb, uas zoo heev txhim kho kev nyab xeeb ntawm lub roj teeb.