Kev Ua Tauv Ntawm Titanium Anodes Thiab Cov Teeb Meem Uas Xav Tau Sij Hawm

Titanium anode muaj hluav taws xob zoo heev thiab corrosion tsis kam, thiab nws lub neej kev pabcuam ntev dua li cov hlau lead anode. Nws tuaj yeem ua haujlwm ruaj khov rau ntau dua 4000 teev thiab muaj tus nqi qis. Nws yuav yog qhov muaj peev xwm tsis pom zoo rau kev txhim kho electro-galvanized thiab tin ntau lawm hauv tsev thiab txawv teb chaws. Titanium electrodes tam sim no siv hauv Nyij Pooj, Tebchaws Asmeskas, Lub Tebchaws Yelemees, thiab Tuam Tshoj, uas tsis tsuas yog txuag tau zoo tshaj plaws ntawm kev siv hluav taws xob, tab sis kuj tsim cov xwm txheej rau kev tsim cov tuab ntawm galvanized thiab tin steel daim hlau vim cov hluav taws xob ntau ntxiv tam sim no.

Kev faib tawm Titanium anode:

1. Nws yog qhov txawv raws li cov roj hloov zuj zuj los ntawm qhov anode hauv cov hluav taws xob hluav taws xob. Cov chlorine evolution anode yog hu ua chlorine evolution anode, xws li ruthenium-coated titanium electrode: cov pa oxygen anode yog hu ua oxygen oxygen anode, xws li iridium-coated titanium electrode thiab platinum titanium mesh. / pawg thawj coj saib. Chlorine evolution anode (ruthenium-coated titanium electrode): Cov electrolyte muaj cov ntsiab lus tseem ceeb ntawm chloride ions, feem ntau nyob ib puag ncig ntawm hydrochloric acid, electrolysis ntawm dej hiav txwv, thiab electrolysis ntawm ntsev dej. Sib cov khoom ntawm peb lub tuam txhab yog ruthenium iridium titanium anode, ruthenium iridium tin titanium anode.

2. Oxygen evolution anode (Iridium series coated titanium electrode): Qhov hluav taws xob feem ntau yog sulfuric acid ib puag ncig. Cov khoom sib xws ntawm peb lub tuam txhab yog iridium tantalum anode, iridium tantalum tin titanium anode, thiab siab iridium titanium anode.

3. Platinum-coated anode: Titanium yog cov khoom siv dawb. Qhov saum npoo yog txheej nrog platinum, lub thickness ntawm txheej yog feem ntau 0.5-5μm, thiab qhov loj ntawm platinum titanium mesh feem ntau 12.5 × 4.5mm lossis 6 × 3.5mm.

Lub neej ua haujlwm ntawm titanium anode muaj qee lub sijhawm thaum lub sijhawm ua haujlwm electrolysis. Thaum qhov hluav taws xob nce siab heev thiab qhov tseeb tsis dhau tam sim no dhau los, ruthenium-iridium-titanium anode poob nws txoj haujlwm. Qhov tshwm sim no hu ua anode passivation. Muaj ntau lub laj thawj rau titanium anode passivation.

a. Cov tshuaj pleev xim peels tawm

Cov titanium anode yog muaj li ntawm titanium substrate thiab ib lub ruthenium-iridium-titanium active txheej. Cov tshuaj tiv thaiv hluav taws xob tsuas yog cov ruthenium-iridium-titanium active txheej. Yog tias txheej thiab cov txheej nruab nrog tsis sib txuas khov kho, lawv yuav poob tawm ntawm cov phaj titanium phaj ua kom sib npaug. Cov titanium ruthenium iridium titanium anode poob nws qhov kev ua haujlwm. (Muab faib rau hauv tawg tev, plab-zoo li txheej txheej twm thiab tawg pleb)

b. RuO2 yaj

Txo kev tshwm sim ntawm cov pa tuaj yeem ua kom qeeb ntawm kev tsim cov oxide zaj duab xis. Thaum tag nrho cov pa hluav taws xob tam sim no nce ntxiv, qhov nce ntawm tus nqi ntawm chlorine tiam yog ntau dua li qhov nce ntawm qhov feem pua ​​ntawm cov pa oxygen, yog li qhov nce ntawm qhov ceev tam sim no yog qhov zoo rau txo qis ntawm cov pa oxygen hauv chlorine. Cov titanium substrate yog pre-oxidized los ua ib qho oxide zaj duab xis, uas tuaj yeem nce qhov khi khi ntawm cov txheej ua kom nquag plias ntawm ruthenium, iridium, titanium thiab titanium substrate, ua rau cov txheej ua kom ruaj khov, thiab tiv thaiv cov ruthenium los ntawm poob thiab yaj, tab sis nws tseem yuav ua rau ruthenium, iridium, titanium Nce hauv anode ohmic poob.

c. Oxide saturation

Cov txheej txheem nquag muaj li ntawm cov tsis-stoichiometric RuO2- thiab TiO2, uas yog cov pa oxygen-tsawg. Qhov tsis-stoichiometric oxide yog qhov chaw nquag ua haujlwm ntawm chlorine paug tawm. Qhov ntau cov oxides, ntau cov chaw zov me nyuam, thiab qhov kev ua zoo dua ntawm ruthenium, iridium, titanium anode. Lub conductivity ntawm ruthenium-iridium-titanium-coated anodes yog qhov kev ua tau zoo ntawm cov tsis sib xws n-hom sib xyaw ua kua tsim los ntawm isomorphous RuO2 thiab TiO2 tom qab kev kho cua sov. Muaj qee qhov chaw pa pa tawm. Thaum cov pa xa tawm ntawm cov pa oxygen tau sau, dhau ntawm Qhov yuav tshwm sim sai, ua rau passivation.

d. Muaj cov kab nrib pleev hauv cov xim no

Thaum lub sijhawm siv hluav taws xob, cov pa oxygen tshiab tau tsim nyob rau ruthenium-iridium-titanium anode, qee qhov kev tso tawm ntawm qhov kev sib tshuam ntawm cov txheej txheej nquag thiab electrolyte, thiab tom qab ntawd tawm ntawm anode nto los tsim oxygen mus rau hauv cov tshuaj; vim yog cov kab nrib pleev hauv cov txheej txheej nquag, lwm qhov ntawm cov pa yog adsorbed ntawm qhov anode Nyob rau saum npoo, los ntawm cov txheej txheem nquag dhau los ntawm diffusion lossis tsiv teb tsaws, nws mus txog qhov sib cuam tshuam ntawm cov txheej thiab titanium txheej, thiab tom qab ntawd cov pa oxygen yog cov tshuaj adsorbed. nyob rau saum npoo ntawm cov titanium substrate, sib sau ua yeeb yaj kiab tsis muaj yeeb yaj kiab oxide (TiO2) nrog rau cov titanium, ua rau muaj kev thim rov qab lossis cov xaim hluav taws xob nkag mus los ntawm cov kab nrib pleev rau txheej, cov titanium substrate yog maj mam oxidized, thiab lub interface nrog cov nquag txheej ntawm ruthenium, iridium, titanium yog corroded, ua rau lub active txheej ntawm ruthenium, iridium, titanium poob tawm, ua rau lub peev xwm ntawm ruthenium iridium titanium tau sawv. Qhov nce hauv lub peev xwm txuas ntxiv txhawb nqa qhov xaus ntawm txheej thiab oxidation ntawm titanium txheej.