Kev soj ntsuam cov tshuab tsis ua haujlwm - Kev ruaj ntseg ntawm kev sib tshuam ntawm Lub Siab -Purity Titanium Substrate Thiab MMO Txheej

Kev soj ntsuam cov tshuab tsis ua haujlwm - Interfacial ruaj khov ntawm High-Purity Titanium Substrate thiab MMO Txheej

Abstract:Tsab ntawv xov xwm no tsom mus rau cov ntaub ntawv tshawb fawb keeb kwm yav dhau los ntev -kev cog lus lub neej ntawm titanium anode mesh ribbons, muab kev soj ntsuam qhov tob ntawm qhov tsis ua haujlwm ntawm "titanium substrate - Mixed Metal Oxide (MMO) txheej" kev sib xyaw ua ke nyob rau hauv -lub sij hawm electrochemical stress. Nws sib cav hais tias qhov tseeb lifespan bottleneck tsis yog qhov sib xws ntawm cov txheej txheem nws tus kheej, tab sis qhov tsis ua haujlwm ntawm lub ntsej muag thiab hauv cheeb tsam degradation pib los ntawm micro- tsis xws luag.

1. Kev cog lus Passive ntawm High -Purity Titanium substrate thiab nws txwv
Cathodic tiv thaiv titanium anode mesh ribbons siv kev lag luam ntshiab titanium (xws li, TA1) ua cov substrate. Nws lub ntsiab kom zoo dua yog nyob rau hauv tsim ntawm ib tug ntom titanium dioxide (TiO₂) passive zaj duab xis ntawm nws nto. Cov yeeb yaj kiab no nthuav tawm tus nqi qis heev nyob rau hauv lub qhov rais tsim anode, tsim lub hauv paus theoretical rau "zero-siv" skeleton. Txawm li cas los xij, lub xeev passive no muaj peev xwm nruj heev - nyob ntawm. Hauv cov xov xwm hnyav tshwj xeeb uas muaj cov fluoride ions lossis cov ntsiab lus siab ntawm kev txo cov kua qaub, cov zaj duab xis passive no tuaj yeem ua txhaum hauv zos. Ib qho kev pheej hmoo ntau dua yog tias thaum cov txheej txheej muaj micro- tawg lossis qhov pores, electrolyte nkag tuaj yeem ua rau tsim cov tuab, siab dua-impedance insulating TiO₂ txheej ntawm txheej txheej / substrate interface piv rau cov zaj duab xis ntau dhau, uas ua rau muaj kev cuam tshuam hauv zos thiab tam sim no thaiv.

2. MMO Coating's "Active Site Attenuation" vs. "Bulk Consumption"
Cov ntaub ntawv siv tsawg kawg nkaus ntawm MMO txheej (xws li, IrO₂-Ta₂O₅), feem ntau raug suav hais tias yog 1-10 mg/A·xyoo, feem ntau siv los ua kom pom lawv lub neej ntev. Txawm li cas los xij, qhov tsis ua haujlwm tiag tiag feem ntau tshwm sim raws li kev ua haujlwm qis qis dua li lub cev qaug zog ntawm txheej. Cov txheej txheem degradation feem ntau suav nrog:

Selective Deactivation ntawm Active Sites:Nyob rau hauv ib puag ncig tswj los ntawm cov pa oxygen evolution cov tshuaj tiv thaiv (xws li av, dej tshiab), active Cheebtsam nyob rau hauv lub txheej tej zaum yuav undergo theem transformation los yog ua ke nrog tej yam tshuaj tiv thaiv intermediates, ua rau ib tug qeeb qeeb ntawm electrocatalytic kev ua si.

Kev hloov pauv hauv Txheej Txheej Microstructure:Ntev -lub sij hawm electrochemical polarization tuaj yeem ua rau lub hauv paus micro-kawg network hauv cov txheej txheem nthuav dav, lossis ua kom muaj crystallization ntawm cov theem amorphous ib nrab, yog li hloov nws qhov tseeb ntawm thaj chaw thiab cov khoom xa mus.

Contaminant Masking Effect:Nyob rau hauv complex dej chemistry, cov tebchaw ntawm calcium, magnesium, silicon, thiab lwm yam, tej zaum yuav deposit thiab scale ntawm txheej txheej, lub cev thaiv lub reactive interface.

3. Interfacial Failure: Hom kev puas tsuaj tshaj plaws
Hom tsis ua haujlwm tseem ceeb tshaj plaws tshwm sim ntawm qhov sib cuam tshuam ntawm titanium substrate thiab MMO txheej. Yog tias electrolyte mus txog titanium substrate hauv zos vim yog txheej txheej inhomogeneity, pinholes, lossis mechanical puas, siab -impedance passive txheej txheej ntawm qhov chaw. Cov zis tam sim no los ntawm cheeb tsam no raug yuam kom tso tseg, overloading nyob ib puag ncig thaj chaw thiab tsim kom muaj lub voj voog tsis zoo uas ua kom nrawm tag nrho. Hom kev ua tsis tiav no yog nyob hauv cheeb tsam thiab muaj peev xwm tam sim ntawd, ua rau nws nyuaj rau kwv yees siv cov qauv siv nruab nrab.

Xaus:Yog li ntawd, kev ntsuas lub neej ntawm titanium anode mesh ribbons tsis tuaj yeem cia siab rau qhov nruab nrab noj cov ntaub ntawv los ntawm cov xwm txheej zoo tagnrho. The material's manufacturing process (ensuring a dense, defect-free coating), precise matching with the application environment (avoiding conditions that destabilize the passive film), and avoidance of operational overloads (preventing local overheating and stress) are the peb yam tseem ceeb hauv kev ua kom lawv ua tiav lawv lub neej kev pab cuam.