Catalyst Coatings ntawm MMO Anodes: Hom, Thickness, thiab Functionalities

MMO anodes pom dav siv nyob rau hauv ntau yam lag luam, vim lawv zoo heev corrosion kuj thiab stability. Txhawm rau txhim kho lawv cov haujlwm catalytic, feem ntau siv cov txheej txheem catalyst. Nyob rau hauv tsab xov xwm no, peb tshawb nrhiav cov hom catalyst coatings, qhov cuam tshuam ntawm txheej thickness, thiab cov functionalities ntawm oxygen evolution thiab chlorine evolution catalysts, nrog rau lawv cov kev siv nyob rau hauv txawv industries.

Hom Catalyst Coatings:
1. Ruthenium Oxide (RuO2): Ruthenium oxide yog ib qho ntawm feem ntau siv catalyst coatings rau titanium anodes vim nws high efficiency nyob rau hauv ntau yam electrochemical txheej txheem, nrog rau cov pa oxygen thiab chlorine evolution tshua. Nws nthuav tawm zoo heev stability thiab conductivity, ua rau nws haum rau xav tau daim ntawv thov.

2. Iridium Oxide (IrO2): Iridium oxide coatings muab cov khoom zoo sib xws rau ruthenium oxide tab sis nyiam nyob rau hauv cov ntawv thov uas muaj kev ruaj ntseg nyob rau hauv cov xwm txheej hnyav yog qhov tseem ceeb. Txawm hais tias iridium yog kim dua li ruthenium, nws qhov kev tiv thaiv corrosion zoo tshaj nws qhov kev siv hauv qee qhov kev lag luam.

3. Platinum Group Metals (PGMs): Dhau li ntawm ruthenium thiab iridium, lwm cov platinum pawg hlau xws li platinum thiab palladium qee zaus siv los ua cov txheej txheem catalyst ntawm titanium anodes. Cov hlau no muab cov kev ua haujlwm catalytic tshwj xeeb thiab tuaj yeem xaiv raws li qhov yuav tsum tau ua ntawm daim ntawv thov.

Kev cuam tshuam ntawm Txheej Thickness:
Lub thickness ntawm cov txheej txheej catalyst plays lub luag haujlwm tseem ceeb hauv kev txiav txim siab kev ua haujlwm ntawm titanium anodes. Thaum cov txheej txheej tuab tuaj yeem txhim kho cov kev ua haujlwm catalytic thaum pib, cov txheej tuab tuab tuaj yeem ua rau muaj zog tiv thaiv thiab kev ua haujlwm tsis zoo nyob rau lub sijhawm vim muaj kev txwv diffusion. Yog li ntawd, qhov zoo tshaj plaws txheej thickness yog tsim nyog los sib npaug catalytic kev ua si thiab electrode stability.

Kev ua haujlwm ntawm Oxygen thiab Chlorine Evolution Catalysts:
1. Oxygen Evolution Catalyst: Cov pa oxygen evolution cov tshuaj tiv thaiv (OER) tshwm sim thaum lub sij hawm electrolysis ntawm dej, nyob rau hauv oxygen yog tsim nyob rau hauv lub anode. Catalyst coatings pab cov txheej txheem no los ntawm kev txo cov overpotential xav tau rau oxygen evolution, yog li txhim kho lub zog efficiency. Oxygen evolution catalysts nrhiav kev siv hauv kev lag luam xws li kev kho dej, chlor-alkali ntau lawm, thiab electrolytic hlau rov qab.

2. Chlorine Evolution Catalyst: Hauv qee cov txheej txheem electrochemical, xws li chlorine-alkali electrolysis, chlorine gas yog tsim los ntawm anode los ntawm cov tshuaj chlorine evolution (CER). Catalyst coatings txhawb cov tshuaj tiv thaiv no los ntawm kev ua kom cov oxidation ntawm chloride ions, ua rau muaj cov tshuaj chlorine ntau ntxiv. Chlorine evolution catalysts yog qhov tseem ceeb rau kev lag luam koom nrog hauv kev tsim cov tshuaj chlorine-based, tshuaj tua kab mob, thiab tshuaj tua kab mob.

Xaus:
Catalyst coatings ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm MMO anodes hauv ntau daim ntawv thov electrochemical. Ruthenium oxide, iridium oxide, thiab platinum pawg hlau yog feem ntau siv txheej txheej, txhua qhov muab cov txiaj ntsig tshwj xeeb raws li daim ntawv thov. Optimal txheej thickness yog qhov tseem ceeb kom sib npaug catalytic kev ua si thiab electrode stability. Cov kev ua haujlwm ntawm cov pa oxygen thiab chlorine evolution catalysts ua kom cov txheej txheem ntau lawm hauv kev lag luam xws li kev kho dej mus rau kev tsim tshuaj.

Cov txheej txheem no qhia txog qhov tseem ceeb ntawm cov txheej txheem catalyst hauv kev ua kom zoo tshaj plaws thiab kev ntseeg siab ntawm MMO anodes thoob plaws ntau hom kev lag luam.