Platinum{0}}Coated Titanium Anodes: Kev xaiv substrate, Txheej Thickness thiab Kev Pabcuam Lub Neej
Mar 13, 2024
Yuav ua li cas Platinum -Plated Titanium Anode ua haujlwm
Lub platinum titanium anode yog cov khoom siv hluav taws xob sib xyaw: titanium substrate nqa cov khoom siv hluav taws xob thiab hluav taws xob, thiab cov txheej platinum nyias muab cov txheej txheem electrochemical. Kev sib xyaw ua ke tshwm sim vim tsis muaj hlau ua haujlwm ib leeg. Platinum muaj qhov ua tau zoo catalytic thiab corrosion kuj tab sis raug nqi ntau dhau los siv los ua cov phaj khoom. Titanium yog pheej yig, lub teeb thiab mechanically muaj zog, tab sis raws li ib tug anode nws passivates instantly thiab tsis ua.
Cov txheej txheem thim rov qab tus cwj pwm ntawd. Platinum lub siab oxygen evolution muaj peev xwm thiab tsis tshua muaj hydrogen evolution muaj peev xwm ua rau nws yog cov khoom siv cathode zoo heev rau hydrogen evolution, thiab nws cov pa oxygen ntau dhau yog qhov muaj txiaj ntsig zoo sib xws ntawm sab anode ntawm qis -voltage cells qhov twg cov pa oxygen tsis xav tau. Hauv kev xyaum, cov electrode raug xaiv rau sab twg ntawm lub xovtooj ntawm cov txheej txheem xav tau, thiab kev tsim kho tib yam ua haujlwm rau ob lub luag haujlwm.
Lub titanium substrate tseem ceeb tshaj li feem ntau buyers xav. Cov neeg siv khoom lag luam txiav txim siab coated titanium anodes hauv plaub tsev neeg txheej dav: ruthenium-iridium sib xyaw hlau oxide, iridium-tantalum oxide, ruthenium-iridium-platinum blends, thiab ntshiab platinum plating. Lub platinum titanium anode muaj cov nyiaj ci ci-dawb zoo nkauj nrog cov xim hlau nplaum, txawv ntawm qhov tsaus ntuj matte tiav ntawm oxide-coated hom.
Substrate Requirements: Qib 1 thiab Qib 2 Titanium
Lub substrate yog unalloyed titanium, feem ntau Qib 1 los yog Qib 2 rau ASTM B265 rau phaj thiab ntawv los yog ASTM B338 rau raj thiab mesh Tshuag, nrog rau sib npaug TA1 thiab TA2 designations nyob rau hauv GB / T 3620.1. Qib 1 yog qhov nyiam tshaj plaws rau cov txheej txheem uas xav tau tshaj plaws vim tias nws cov hlau qis thiab cov pa oxygen txo qhov kev pheej hmoo ntawm kev tsim intermetallic ntawm cov txheej txheej txheej thiab cov tshuaj tiv thaiv hauv zos hauv platinum txheej.
| Yam ntxwv | Pom zoo xyaum | Yog vim li cas |
|---|---|---|
| Qib substrate | Qib 1 lossis Qib 2 txog ASTM B265 | Tsawg residuals muab lub platinum ruaj khov interface |
| Kev npaj nto | Grit blasting ua raws li acid etching | Tsim cov thauj tog rau nkoj profile rau txheej adhesion |
| Platinum thickness | Feem ntau 1.5 txog 5 microns | Sib npaug txheej txheej lub neej tiv thaiv tus nqi platinum |
| Substrate daim ntawv | Phaj, mesh, nthuav daim ntawv, raj, pas nrig | Matched rau cell geometry thiab kev faib tam sim no |
| Tam sim no ceev | Khaws kom tsawg li qhov txheej txheem tso cai | Txheej lub neej poob thaum tam sim no qhov ntom ntom ntom ntom |
Vim li cas Coating Life Falls, thiab Yuav Ua Li Cas Thiaj Ua Tau
Anode lub neej tsis yog tus lej tas; Nws yog ib txoj haujlwm ntawm yuav ua li cas cov electrode ua haujlwm. Kev sib raug zoo tseem ceeb yog qhov sib txawv ntawm qhov sib txawv ntawm qhov ceev tam sim no thiab kev pabcuam lub neej. Ua ob npaug ntawm qhov ceev tam sim no ntau dua li ib nrab ntawm cov txheej txheem muaj txiaj ntsig, vim tias platinum tawg tus nqi nce nrog cov peev txheej thov ntawm cov txheej txheej thiab cov passivation ntawm cov titanium uas raug nthuav tawm nrawm dua ib zaug pinhole cov ntaub ntawv.
Substrate zoo yog qhov thib ob. Yog hais tias lub titanium tsis txaus los yog yog hais tias qhov kev npaj ntawm nto tawm residual oxide los yog paug, lub platinum txheej poob adhesion thiab lub hauv paus hlau corrodes nyob rau hauv lub txheej. Thaum muaj qhov tsis xws luag qhib, cov titanium tshwm sim tam sim ntawd thiab tag nrho cov electrode tuaj yeem ua tsis tiav ntawm qhov taw tes es tsis txhob maj hla ntawm qhov chaw.
Electrolyte chemistry yog qhov thib peb thiab tsawg kawg zam txim. Titanium raug tawm tsam los ntawm fluoride, thiab fluoride ions yuav ua kom puas lub coated anode los ntawm hauv qab platinum txheej txawm nyob rau hauv tsawg concentration. Cyanide thiab sulfide hom yuav tsum tsis suav nrog. Qhov twg cov txheej txheem tsis tuaj yeem zam cov ions no, cov anode yog cov tshuab hluav taws xob tsis raug thiab cov txheej txheem ntawm niobium lossis tantalum yuav tsum tau txiav txim siab hloov, vim tias ob qho tib si tiv thaiv cov tshuaj fluoride zoo dua li titanium.
Kev qhuab qhia kev ua haujlwm suav nrog lwm tus. Polarity thim rov qab yog qee zaum siv los txhob txwm tshaj tawm cov txheej txheej passivated thaum kho dua tshiab, uas yog vim li cas nws yuav tsum tsis txhob siv rau qhov kev pabcuam anode. Tawm ntawm ib qho hluav taws xob rau hauv electrolyte uas tsis muaj tam sim no ntws kuj degrades cov txheej, yog li cov hlwb yuav tsum de- zog thiab drained ua ke es tsis txhob sawv ntsug ntub dej.
Kev tuav, Cia thiab Hauv -Kev Tiv Thaiv Kev Pabcuam
Lub platinum txheej yog nyias, thiab khawb uas tshem tawm nws tsim ib qho kev ua tsis tiav. Coated anodes yuav tsum tau siv cov hnab looj tes huv si, khaws cia kom cov chaw tsis tuaj yeem sib tsoo, thiab tsis txhob ntxuav nrog cov xov xwm abrasive lossis cov cuab yeej hlau. Cov txheej txheej me me dua li ib millimeter yuav, hauv cov tshuaj chloride electrolyte, corrode sab nraud thiab passivate sai txaus kom nce cell voltage nyob rau hauv ib hnub.
Cia tej yam kev mob tseem ceeb thiab. Electrodes yuav tsum tau qhuav thiab tiv thaiv los ntawm cov kua qaub, thiab ib qho anode tshem tawm ntawm lub cell yuav tsum tau rinsed nrog dej demineralised thiab qhuav ua ntej muab tso rau hauv cia. Qhov seem electrolyte sab laug rau ntawm qhov chaw yuav mloog zoo thaum nws qhuav thiab tawm tsam cov ntug txheej.
Qhov twg daim ntawv thov muaj cov dej electrolysis, ionised dej tsim los yog sterilizing dej ntau lawm, cov tswv yim specification feem ntau yog sau nyob ib ncig ntawm substrate qib, substrate daim ntawv, platinum thickness, txheej txheej thiab ib tug tam sim no ceev txwv es tsis yog txheej chemistry ib leeg. Cov neeg yuav khoom yuav tsum hais kom platinum txheej tau teev tseg los ntawm huab hwm coj ib cheeb tsam lossis los ntawm tuab, txij li cov txheej txheem tsuas yog tam sim no qhia lawv tsis muaj dab tsi txog lub neej xav tau.
Daim ntawv thov qhov twg Platinum Titanium Anodes yog tus qauv
Hydrogen tiam hlwb siv platinum-coated titanium ua cathode, qhov twg cov hydrogen tsawg tshaj qhov ua rau ntawm tes tsis muaj zog. Dej ionisers thiab electrolysed dej generators rau sterilization siv tib yam kev tsim kho, feem ntau raws li mesh los yog perforated phaj muab ib tug loj ua hauj lwm cheeb tsam nyob rau hauv ib tug compact cell. Electrolysed dej thiab hypochlorite tiam tau txais txiaj ntsig los ntawm platinum nto vim nws zam lub zog oxidising ntawm lub anode yam tsis muaj qhov poob sai sai pom nrog cov hlau oxide txheej.
Tshaj li ntawd, platinum titanium anodes tshwm nyob rau hauv cathodic tiv thaiv steel qauv hauv dej hiav txwv, hauv electroplating thiab hlau xov xov siv cov hlau electrolytes zoo, thiab hauv electrochemical oxidation hlwb rau kev kho effluent qhov twg cov organic load yuav tsum raug rhuav tshem ntawm qhov ceev tam sim no. Txhua daim ntawv thov tsav qhov sib txawv ntawm platinum loading thiab kev khiav hauj lwm ceev tam sim no, thiab qhov nyiaj tshuav yuav tsum tau pom zoo nrog tus neeg muag khoom anode ua ntej lub xov tooj ntawm tes tsim, tsis yog tom qab ua haujlwm thawj zaug.
Cov lus nug nquag
Q:Dab tsi titanium qib yog siv los ua lub substrate rau platinum coated anode?
A: Qib 1 lossis Qib 2 tsis muaj titanium rau ASTM B265, lossis TA1 thiab TA2 hauv GB / T 3620.1. Qib 1 yog qhov zoo dua rau cov txheej txheem tseem ceeb vim tias nws cov ntsiab lus qis qis ua rau muaj kev ruaj khov dua nrog cov platinum txheej.
Q:Cov txheej platinum tuab npaum li cas ntawm titanium anode?
A: Feem ntau cov tshuab electrodes siv nruab nrab ntawm 1.5 thiab 5 microns ntawm platinum. Lub caij thauj khoom raug xaiv kom haum rau lub neej kev pab cuam thiab qhov tso cai tam sim no, thiab nws yuav tsum tau hais los ntawm tuab lossis los ntawm platinum huab hwm coj hauv ib cheeb tsam.
Q:Dab tsi ions yuav tsum tau zam hauv electrolyte?
A: fluoride, cyanide thiab sulfide. Fluoride yog qhov kev puas tsuaj tshaj plaws vim tias nws tawm tsam cov titanium substrate hauv qab txheej thiab tsis tuaj yeem txo qis los ntawm kev nce platinum thickness.
Q:Lub platinum titanium anode puas tuaj yeem siv los ua cathode?
A: Yog. Platinum ua ke nrog qis hydrogen evolution overpotential nrog siab oxygen evolution overpotential, uas ua rau nws ua tau zoo cathode khoom rau hydrogen tiam. Tib electrode feem ntau xaiv rau lub luag haujlwm ntawd.
Q:Dab tsi shortens anode lub neej feem ntau nyob rau hauv ib txwm ua haujlwm?
A: Ntau dhau tam sim no ceev. Txheej lub neej yog inversely proportional rau tam sim no ceev, yog li kev khiav hauj lwm ib tug electrode saum toj no nws rated ceev yog txoj kev ceev tshaj plaws rau haus cov platinum txheej.
Q:Puas yog polarity thim rov qab puas tau txais kev pabcuam?
A: Tsis yog. Kev thim rov qab yog siv thaum kho dua tshiab kom tshem tawm cov txheej txheej passivated thiab yuav tsum tsis txhob siv rau cov anode hauv kev ua haujlwm ib txwm muaj, vim tias nws ua rau cov txheej txheem platinum sai sai.
