Dab tsi yog Titanium Electrode?

Titanium electrode yog ib hom electrode uas siv hlau titanium ua lub substrate thiab thaum kawg tsim oxide txheej nrog electrocatalytic kev ua si ntawm titanium substrate los ntawm sintering thiab oxidation. Vim nws lub cev qhov ntev ruaj khov thaum siv, nws tseem hu ua Dimensionally Stable Anode (DSA luv luv).

Raws li cov tshuaj muaj pes tsawg leeg thiab cov khoom siv hluav taws xob tseem ceeb ntawm cov txheej txheem, titanium electrodes tuaj yeem faib ua peb pawg hauv qab no:

▲ Ruthenium Coated Titanium Electrode

Hom electrode no muaj cov tshuaj chlorine evolution tsawg tshaj qhov muaj peev xwm thiab siab oxygen evolution overpotential thiab feem ntau yog siv nyob rau hauv ntau yam tshuaj chlorine tsom xam, xws li kev lag luam Chlor-alkali, tiv thaiv cathodic, thiab lwm yam. Hom electrode txheej no suav nrog cov thawj ruthenium-titanium txheej ( Ru-Ti) and Ru-Ir-Ti, Ru-Co-Ti, Ru-Co-Sn-Ti, Ru-Sn-Ti, Ru-Si-Ti, Ru-Ti-Zr, Ru-Ti-La, Ru -Ti-Ce, thiab lwm yam txheej.

▲Tsis yog-ruthenium-coated titanium electrode

Ruthenium yog cov hlau muaj txiaj ntsig nrog tus nqi siab thiab txwv tsis pub nyob hauv qhov xwm txheej. Yuav kom txo tau tus nqi ntawm Ru los yog txawm hloov tag nrho Ru, ib tug non-ruthenium-raws li coated titanium electrode tau tsim. Hom electrode no feem ntau muaj cov pa oxygen evolution overpotential. Muaj kev vam meej electrodes muaj xws li tin-antimony-coated titanium electrodes, Co3O4 spinel-coated titanium electrodes, thiab palladium oxide-coated titanium electrodes.

▲Iridium Coated Titanium Electrode

Hauv qee cov txheej txheem electrolytic, xws li electrolytic extraction ntawm non-ferrous hlau, electroplating kev lag luam, thiab electrochemical txo los tsim cov organic teeb meem, thiab lwm yam, tus tsim cov tshuaj tiv thaiv ntawm lub anode yog ib tug oxygen evolution cov tshuaj tiv thaiv, yog li nws cia siab tias yuav tsim ib qho khoom siv anode. nrog qis oxygen evolution overpotential, iridium txheej Nws yog tawm tsam qhov keeb kwm yav dhau uas txheej txheej titanium electrodes tau tsim. Cov txheej txheej electrode xws li Ir-Co, Ir-Ta, Ir-Sn, Ir-Ta-Co, Ir-Ru-Pd-Ti, thiab lwm yam txheej. Ntawm lawv, Ir-Ta-coated titanium electrode yog qhov zoo tshaj plaws oxygen evolution electrode.

■ Thermal decomposition

Txoj kev thermal decomposition feem ntau dissolves hlau ntsev tebchaw nyob rau hauv cov organic solvents los yog aqueous daws, coats cov tshuaj nyob rau hauv titanium substrate, volatilizes cov kuab tshuaj los ntawm cua sov, thiab ces sinters ntawm kub kub kom decompose thiab oxidize cov ntsev kom tau ib tug oxide txheej. Txheej txheej muaj xws li tshuaj tsuag, dov lossis txhuam. Txau thiab dov txheej muaj qib siab ntawm kev siv tshuab, tsim nyog rau kev lag luam loj, thiab muaj chaw ua haujlwm zoo. Cov txheej txheej kuj zoo ib yam, tab sis cov pov tseg ntawm cov kua txheej yog qhov loj. Txhuam txheej yog feem ntau haum rau cov khoom me me. Txoj kev no yuav tsum muaj cov cuab yeej siv yooj yim thiab tsis tshua muaj cov txheej txheem ua kua, tab sis kev siv zog ua haujlwm siab, qhov chaw ua haujlwm tsis zoo, thiab cov txheej tau txais feem ntau tsis zoo txaus. Siv cov txheej txheem thermal decomposition, oxide electrodes nrog ntau cov khoom thiab kev ua haujlwm zoo tuaj yeem npaj tau yooj yim los ntawm kev tswj cov txheej txheem txheej txheej [2,3].

■Txoj kev Sol-gel

Txoj kev sol-gel yog ib txoj kev tawm tshiab rau kev npaj cov txheej txheem raws li lub hauv paus ntsiab lus ntawm colloid chemistry. Nws tuaj yeem npaj cov txheej txheej electrode nrog cov nplej ultrafine, uas ua rau muaj qhov tshwj xeeb ntawm qhov chaw ntawm electrode nto [4,5]. Cov txheej txheem dav dav ntawm kev npaj titanium electrodes los ntawm txoj kev no yog kom tawg cov hlau-organic compounds (xws li hlau alkoxides) los yog inorganic compounds nyob rau hauv cov kuab tshuaj, tsim active monomers los ntawm hydrolysis, thiab polymerize active monomers los tsim sols, thiab coated lub sols ntawm lub titanium substrate, sol zaj duab xis yog qhuav kom tau ib tug gel zaj duab xis, thiab ces sintered ntawm ib tug tej yam kub kom tau ib tug txheej. Piv nrog rau cov txheej txheem thermal decomposition, cov txheej txheem electrode npaj los ntawm txoj kev no yog ib yam, cov nplej zoo dua, thiab yuav luag tsis muaj qhov tawg, uas tau nyiam ntau xyoo dhau los.

■Electrodeposition

Txoj kev electrodeposition yog siv los npaj coated titanium electrodes. Feem ntau, cov electrode insoluble yog siv los ua anode, thiab pretreated hlau titanium yog siv los ua cathode. Nws yog electrolyzed nyob rau hauv ib qho kev daws uas muaj cov hlau ions, thiab cov hlau ions tau tso rau ntawm cov hlau titanium cathode. Tom qab ziab, ces kub kub Lub coated titanium electrode yog tau los ntawm sintering. Cov coatings tau los ntawm txoj kev no feem ntau yog sib xws thiab ntom. Qhov tsis zoo ntawm txoj kev no yog cov txheej txheem nyuaj, thiab nws tsis yooj yim los ua ib qho chaw loj-tsawg electrode.

■Sputtering txoj kev

Cov zaj duab xis npaj los ntawm txoj kev sputtering yog ntom thiab muaj zog sib txuas nrog lub substrate. Txawm li cas los xij, txoj kev no yuav tsum tau siv cov cuab yeej tshwj xeeb, cov txheej txheem kev npaj yog qhov nyuaj, thiab cov cawv niam yog nkim ntau dua, yog li nws tsis haum rau kev tsim khoom loj.

1. Xaiv TA1 hom titanium puag cov khoom siv, thiab xyuas kom meej tias lub phaj phaj yog du thiab du, tsis muaj khawb tob thiab tsis tiav.

2. Ua cov txheej txheem kev ua haujlwm ntawm cov titanium substrate xaiv, thiab ua raws li cov kev qhia tshwj xeeb thiab qhov ntau thiab tsawg los ntawm cov neeg siv khoom.

3. Perform annealing and leveling treatment on the titanium substrate at a temperature >500 degree. (Yuav kom tshem tawm kev ntxhov siab thiab xyuas kom meej.)

4. Thaum lub sij hawm annealing thiab leveling kev kho mob, ib tug tuab titanium oxide txheej yuav raug tsim nyob rau saum npoo ntawm titanium substrate, thiab nws yuav polished mechanically los yog manually ua rau saum npoo muaj ib tug metallic luster ntawm titanium.

5. Siv 10 feem pua ​​​​ntawm cov oxalic acid rau pickle thiab corrode titanium substrate, thiab nqa tawm ob peb teev nyob rau hauv ib tug me ntsis boiling lub xeev, thiaj li hais tias lub nto oxide txheej yog etched rau hauv lub titanium hydride nto.

6. Ua qhov tsim nyog tsim nyog thiab ntau qhov kev teeb tsa ntawm cov hlau muaj txiaj ntsig zoo raws li qhov chaw anode siv los ntawm cov neeg siv khoom.

7. Txheeb xyuas tias cov khoom siv titanium pickling yog tsim nyog, uas yog, txheej txheej saum npoo yog grey qauv pockmarked qauv, thiab tom qab ntawd nqa tawm txheej txheej, sintering raws li qhov tsim nyog kub, txias txias tom qab sintering tawm ntawm lub cub tawg, thiab siv cov txheej thib ob thaum nws txias rau chav sov Squeeze, thiab lwm yam, kom txog rau thaum ntau tshaj 17 mus rau 20 lub sij hawm siv cov kev daws teeb meem.

8. Tom qab lub sintering ntawm cov saum toj no-hais cov txheej txheem ua tiav, lub neej kev sim xeem yog nqa tawm nrog rau lub cub tawg xeem daim, thiab qhov kev xeem yog tsim nyog thiab ntim rau tus me nyuam.

1. Electrolytic zus tau tej cov sodium hypochlorite nyob rau hauv Chlor-alkali kev lag luam thiab chlorate kev lag luam

2. Electrolyzed dej ua haujlwm

3. Kev tsim cov electrodes rau sodium hypochlorite generators thiab chlorine dioxide generators.

4. Cathodic tiv thaiv

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