Supercapacitor: ib yam tshiab ntawm electrochemical zog cia khoom, tsim los ntawm 1970s mus rau 1980s, muaj li ntawm electrodes, electrolytes, diaphragms, tam sim no collectors, thiab lwm yam., nrog ceev ceev zog cia ceev thiab loj zog cia.Lub capacitance ntawm ib tug supercapacitor nyob ntawm qhov chaw ntawm electrode thiab electrode deg cheeb tsam.Txo qhov sib nrug ntawm electrode ntawm lub supercapacitor thiab ua kom cov electrode deg cheeb tsam yuav ua rau kom lub capacitance ntawm lub supercapacitor.Nws lub zog cia yog raws li lub hauv paus ntsiab lus ntawm electrostatic cia.Cov pa roj carbon electrode yog electrochemically thiab structurally ruaj khov, thiab tuaj yeem rov them ntau pua txhiab zaus, yog li supercapacitors tuaj yeem siv tau ntev dua li cov roj teeb.
Txawm li cas los xij, supercapacitors tuaj yeem muaj teeb meem thaum lub sijhawm ua haujlwm, xws li kev laus.Kev laus ntawm supercapacitors hloov cov electrodes, electrolytes thiab lwm yam khoom siv supercapacitor los ntawm lub cev thiab tshuaj lom neeg, ua rau kev laus ntawm supercapacitors, ua rau kev ua haujlwm tsis zoo, thiab qhov degradation yog irreversible.
Kev laus ntawm supercapacitors:
1. Lub plhaub puas lawm
Thaum supercapacitors ua haujlwm nyob rau hauv qhov chaw ntub dej ntev ntev, uas tuaj yeem ua rau kev ua haujlwm tsis zoo thiab ua rau lub sijhawm ua haujlwm luv.Cov dej noo nyob rau hauv cov huab cua nkag mus rau hauv lub capacitor thiab accumulates, thiab lub siab sab hauv ntawm lub supercapacitor tsim.Hauv qhov xwm txheej hnyav, tus qauv ntawm lub supercapacitor casing raug rhuav tshem.
2. Electrode Deterioration
Lub ntsiab yog vim li cas rau kev ua tau zoo degradation ntawm supercapacitors yog deterioration ntawm ntxeem tau activated carbon electrodes.Ntawm qhov tod tes, qhov deterioration ntawm supercapacitor electrodes ua rau cov qauv ntawm cov pa roj carbon activated raug puas tsuaj vim qhov oxidation ntawm qhov chaw.Ntawm qhov tod tes, cov txheej txheem kev laus kuj ua rau muaj qhov tso tawm ntawm impurities ntawm electrode nto, uas ua rau feem ntau ntawm cov pores raug thaiv.
3. Electrolyte Decomposition
Lub irreversible decomposition ntawm cov electrolyte, uas heev shortens lub sij hawm ua hauj lwm ntawm supercapacitors, yog lwm yam ua rau aging.oxidation-txo ntawm cov electrolyte los tsim cov pa roj xws li CO2 lossis H2 ua rau muaj kev nce ntxiv hauv lub siab sab hauv ntawm lub supercapacitor, thiab cov impurities tsim los ntawm nws cov decomposition txo qhov kev ua tau zoo ntawm lub supercapacitor, nce impedance, thiab ua rau lub ntsej muag. cov activated carbon electrode kom deteriorate.
4. Kev tso tawm tus kheej
Cov xau tam sim no tsim los ntawm tus kheej tawm ntawm lub supercapacitor kuj tseem txo qis lub sijhawm ua haujlwm thiab kev ua haujlwm ntawm lub supercapacitor.Qhov tam sim no yog tsim los ntawm oxidized functional pawg, thiab cov pab pawg neeg ua haujlwm lawv tus kheej yog tsim los ntawm electrochemical cov tshuaj tiv thaiv ntawm electrode nto, uas tseem yuav ua kom cov laus ntawm supercapacitor.
Cov saum toj no yog ob peb yam tshwm sim ntawm kev laus ntawm supercapacitor.Yog tias qhov kev laus ntawm lub capacitor tshwm sim thaum siv, nws yuav tsum tau hloov lub capacitor hauv lub sijhawm.
Peb yog JYH HSU (JEC) Electronics Ltd (los yog Dongguan Zhixu Electronic Co., Ltd.), ib qho chaw tsim khoom siv hluav taws xob.Txais tos kom tuaj saib peb lub vev xaib official kom paub ntau ntxiv txog peb lub tuam txhab lossis sab laj rau peb rau kev koom tes ua lag luam.
Post lub sij hawm: Aug-19-2022