Qhov sib txawv tseem ceeb ntawm cov polarizable thiab tsis polarizable electrode yog cov polarizable electrodes muaj cov nqi sib cais ntawm thaj tsam electrode-electrolyte whereas tsis-polarizable electrodes tsis muaj nqi sib cais ntawm thaj tsam electrode-electrolyte.
Polarization ntawm electrodes hauv electrochemistry hais txog kev txo qis ntawm kev ua haujlwm ntawm lub roj teeb. Nws yog ib lub sij hawm sib sau ua ke uas yog siv rau qee yam kev mob tshwm sim ntawm cov txheej txheem electrochemical los ntawm kev sib cais cov teeb meem tshwm sim ntawm qhov cuam tshuam ntawm electrode thiab electrolyte. Cov kev mob tshwm sim no tuaj yeem cuam tshuam cov tshuaj tiv thaiv hauv lub roj teeb nrog rau cov tshuaj kinetics ntawm corrosion thiab hlau deposition. Cov kev phiv loj muaj xws li ua kom polarization thiab concentration polarization. Kev ua kom polarization yog hais txog kev sib xyaw ntawm cov pa roj ntawm qhov sib cuam tshuam ntawm electrode thiab electrolyte thaum concentration polarization yog hais txog qhov tsis sib xws ntawm cov reagents hauv electrolyte, ua rau cov concentration gradient nyob rau hauv ciam khaubncaws sab nraud povtseg.
Dab tsi yog Polarizable Electrode?
A polarizable electrode yog ib qho hluav taws xob nyob rau hauv cov hluav taws xob hluav taws xob uas yog tus cwj pwm los ntawm kev sib cais ntawm cov electrode-electrolyte ciam teb. Peb tuaj yeem pom tias hom polarizable electrode no yog hluav taws xob sib npaug rau lub capacitor. Ib qho zoo tagnrho polarizable electrode yog ib qho khoom siv hypothetical uas yog qhov tsis muaj DC tam sim no ntawm ob sab ntawm cov hluav taws xob ob txheej. Hauv lwm lo lus, tsis muaj qhov tam sim no muaj nyob nruab nrab ntawm cov electrode nto thiab cov electrolyte. Yog li ntawd, ib qho kev hloov pauv tam sim no uas ntws los ntawm qhov system no yog suav tias yog tsis yog-faradic tam sim no.
Daim duab 01: Roj teeb: Cov Hluav Taws Xob Hluav Taws Xob Me me nrog cov hluav taws xob
Tus cwj pwm ntawm hom electrode no yog vim cov tshuaj tiv thaiv electrode ua qeeb qeeb, muaj xoom pauv tam sim no ceev, ua rau nws coj tus cwj pwm los ntawm kev siv hluav taws xob. Lub tswv yim tshuaj ntawm qhov polarizable electrode yog tsim los ntawm tus kws tshawb fawb F. O. Koenig hauv xyoo 1934. Lub platinum electrode yog ib qho piv txwv classic ntawm polarizable electrode.
Dab tsi yog qhov tsis muaj polarizable electrode?
Ib qho tsis muaj polarizable electrode yog ib qho hluav taws xob hauv cov hluav taws xob hluav taws xob uas tuaj yeem ua tus yam ntxwv tsis muaj kev sib cais ntawm tus ciam teb electrode-electrolyte. Qhov ntawd txhais tau hais tias cov hluav taws xob hluav taws xob muaj cov hluav taws xob muaj cov hluav taws xob tam sim no uas tuaj yeem dhau mus yam tsis muaj polarization. Ib qho zoo tagnrho uas tsis yog-polarizable electrode yog ib qho hypothetical electrode uas muaj cov khoom no tsis muaj kev sib cais. Lub peev xwm ntawm cov hluav taws xob tsis muaj polarizable tsis hloov pauv los ntawm nws qhov muaj peev xwm sib npaug thaum siv cov khoom siv tam sim no. Peb tuaj yeem soj ntsuam qhov laj thawj rau tus cwj pwm no raws li cov tshuaj tiv thaiv hluav taws xob ceev infinitely uas muaj qhov sib pauv tsis kawg tam sim no. Hom electrodes no tuaj yeem coj tus cwj pwm zoo li hluav taws xob tua. Nyiaj / nyiaj chloride electrode yog ib qho piv txwv classic ntawm cov electrode uas tsis yog polarizable.
Qhov txawv ntawm Polarizable thiab Tsis Polarizable Electrode yog dab tsi?
Polarizable thiab non-polarizable electrodes yog ob hom electrodes loj uas peb tuaj yeem pom hauv electrochemical hlwb. Qhov sib txawv tseem ceeb ntawm cov polarizable thiab tsis polarizable electrode yog cov polarizable electrodes muaj kev sib cais ntawm cov electrode-electrolyte ciam thaum tsis muaj polarizable electrodes tsis muaj nqi sib cais ntawm tus ciam teb electrode-electrolyte.
Hauv qab infographic tabulates qhov sib txawv ntawm polarizable thiab tsis polarizable electrode nyob rau hauv kom meej ntxiv.
Summary – Polarizable vs Non Polarizable Electrode
Polarizable thiab non-polarizable electrodes yog ob hom electrodes loj uas peb tuaj yeem pom hauv cov tshuaj electrochemical. Qhov sib txawv tseem ceeb ntawm cov polarizable thiab tsis polarizable electrode yog cov polarizable electrodes muaj cov nqi sib cais ntawm cov electrode-electrolyte ciam teb whereas tsis-polarizable electrodes tsis muaj nqi sib cais ntawm no electrode-electrolyte ciam teb.
