Khoom Description
Titanium electrodes rau electrolytic deposition ntawm cobalt
The electrolysis forms of cobalt and nickel are diverse, which is a major feature of nickel and cobalt metallurgy. The process of producing electrolysis can be roughly divided into two types. One is to use chemical precipitation method to purify and remove impurities >Ob theem
Cais nickel thiab cobalt los ntawm chlorine> Hluav taws kub calcining> Txo thiab smelting rau hauv crude cobalt anode> Tau electrolytic cobalt los ntawm electrolytic refining; lwm txoj kev yog tshem tawm impurities> cais npib tsib xee thiab cobalt> Npaj cobalt chloride tov> Ua insoluble anode electrodeposition Tau electrolytic cobalt.
| Anode substrate | Txheej | Txheej thickness | Electrolyte | Tam sim no ceev | pH | Kev pab lub neej |
| Titanium hauv Qib 1 lossis 2 | Ruthenium iridium oxide | 5-20 micron | Cov tshuaj chloride | 1000 A/m2 | >2 | 2-5 xyoo |
Cov txheej txheem electrodeposition ntawm cobalt hauv cov tshuaj chloride nruab nrab (piv txwv li, COC12 electrolyte) koom nrog ntau kauj ruam, koom nrog ntau yam txheej txheem ntawm lub cev thiab tshuaj lom neeg xws li kev tawg, kev hloov pauv, hloov khoom siv, thiab cov tshuaj tiv thaiv electrode. Nyob rau hauv cov txheej txheem no, muaj pes tsawg leeg thiab cov khoom ntawm electrolyte, tam sim no ceev, kub thiab electrode cov ntaub ntawv yuav tag nrho cov cuam tshuam rau cov txheej txheem electroplating.
Nyob rau hauv cov txheej txheem electroplating, ua ntej, cobalt ions yaj nyob rau hauv cov tshuaj chloride nruab nrab yog thauj mus rau electrode nto los ntawm diffusion thiab migration. Nyob rau saum npoo ntawm electrode, cobalt ions raug hloov mus rau hauv cov hlau cobalt los ntawm cov tshuaj tiv thaiv tawm, thiab cov electrons raug xa mus rau lub anode los ntawm ib qho hluav taws xob sab nraud. Cov txheej txheem no suav nrog ob kauj ruam tseem ceeb: kev hloov pauv thiab hloov khoom siv.
Thaum lub sij hawm cov tshuaj tiv thaiv electrode, cobalt ions poob electrons ntawm lub anode thiab raug txo rau hlau cobalt. Cov txheej txheem no suav nrog qhov nce, poob, thiab hloov ntawm electrons. Nyob rau tib lub sijhawm, chlorine ions kuj nce electrons ntawm lub anode thiab oxidized rau hauv cov roj chlorine. Cov txheej txheem no kuj yog ib qho kev them nqi xa mus. Tag nrho cov txheej txheem electroplating yuav tsum tau ua raws li qhov tsim nyog tam sim no ceev thiab kub kom ntseeg tau tias qhov tso nyiaj zoo thiab tso nyiaj ntawm cov hlau cobalt. Qhov ceev ceev tam sim no uas yog dhau high yuav ua rau muaj kev tso nyiaj ntau ntau, thaum lub sijhawm ntom nti uas qis dhau yuav cuam tshuam rau cov nqi thauj khoom thiab tawm los. Kub kuj tseem yuav cuam tshuam rau cov txheej txheem electroplating. Kev kub siab heev yuav ua rau electrolyte decomposition thiab electrode corrosion. Tsis tshua muaj kub yuav cuam tshuam rau electroplating efficiency thiab deposition zoo. Hauv kev ua haujlwm tiag tiag, nws yog ib qho tsim nyog los tswj cov muaj pes tsawg leeg thiab cov concentration ntawm cov tshuaj chloride nruab nrab, tam sim no ntom thiab Kub thiab lwm yam tsis zoo los xyuas kom meej qhov kev vam meej ntawm cov txheej txheem electroplating thiab tau txais cov khoom zoo hlau cobalt. Nyob rau tib lub sijhawm, kev saib xyuas yuav tsum tau them rau kev xaiv thiab kev saib xyuas cov khoom siv electrode kom ntseeg tau tias kev ruaj ntseg thiab kev pabcuam lub neej ntawm cov electrodes.
Cov khoom qhia
JMT tsim titanium electrodes rau electrolytic deposition ntawm cobalt uas tau muab tso rau ntawm npaj titanium phaj los pab txhawb lub electrowinning ntawm cobalt los ntawm cov tshuaj chloride los ntawm thermal tawg. Composites ntawm noble hlau oxides, xws li ruthenium thiab lwm yam platinum pab pawg neeg hlau, ua lub electrocatalytic txheej. Lub DSA titanium anode pom ob qho tib si kev ruaj ntseg corrosion thiab tseem ceeb hluav taws xob noj.
Kev taw qhia txog tuam txhab
TSEEM CEEB RAU HIGH OUALITY titanium khoom
JM-TITANIUM yog ib qho ntawm cov ua lag luam ntawm titanium electrodes, coated titanium anodes thiab dej khib nyiab kho hauv Suav teb. Nws muaj pab pawg kws tshaj lij thiab cov neeg ua haujlwm txawj nrog ntau xyoo ntawm kev paub hauv titanium electrodes thiab electrochemistry teb. Nws tuaj yeem muab rau koj kho qhov zoo titanium electrodes thiab cov kev daws teeb meem zoo meej.
Electrode tshwm sim thaum lub sij hawm cobalt electrode deposition
Electrode tshwm sim thaum lub sij hawm cobalt electrode deposition
Cov tshuaj tiv thaiv cathodic
Lub cathode ntawm cobalt electrolysis yog titanium phaj raws li cathode, uas yog tsim los ntawm electrolysis nyob rau hauv lub noob phaj tank. Lub cobalt ion tawm cov tshuaj tiv thaiv feem ntau tshwm sim ntawm cathode, thiab hlau cobalt yog precipitated:
Cobalt yog cov hlau electronegative
muaj tus qauv tsis zoo electrode muaj peev xwm tshaj hydrogen. Txawm hais tias nws tseem tuaj yeem tso tawm hydrogen ions ntawm cobalt cathode, cov tshuaj tiv thaiv yog:
H + concentration hauv cov tshuaj yuav tsum tau tswj thaum lub sij hawm electrolysis. Cobalt electrolysis siv cov electrolyte acidity ze rau nruab nrab, thiab ntxiv boric acid raws li ib tug tsis rau stabilize pH nqi ntawm cov tshuaj thiab xyuas kom meej tias Co2+ yog precipitated ntawm lub cathode nyiam dua H +. Nyob rau hauv cov txheej txheem electrochemical, cobalt thiab npib tsib xee muaj peev xwm zoo sib xws thiab cov khoom zoo sib xws, thiab tus cwj pwm ntawm cov txheej txheem cathode yog qhov pib zoo ib yam. Cov impurities xws li tooj liab, npib tsib xee, arsenic, thiab lwm yam, uas muaj peev xwm zoo dua li cobalt, tuaj yeem ua ke nrog cobalt ntawm cathode. Thaum cov ntsiab lus ntawm hlau, manganese, zinc, thiab lwm yam, uas muaj peev xwm tsis zoo tshaj li cobalt, tsis siab, lawv yeej tsis cuam tshuam rau qhov zoo ntawm electrocobalt. Txawm li cas los xij, Cov qib siab kuj tseem yuav paug cov cathode. Cov hlau nyob rau hauv cov txheej txheem electroplating yog los ntawm leaching-purified kua. Cov electrolyte tau raug purified heev thiab impurities tshem tawm ua ntej. Diaphragm electrolysis tsis tas yuav siv rau hauv kev tsim khoom.
B anode cov tshuaj tiv thaiv
Cov txheej txheem electroplating siv cov anode insoluble. Cov khoom siv anode nws tus kheej tsis dhau los ntawm electrochemical dissolution cov tshuaj tiv thaiv. Cov tshuaj tiv thaiv electrode ntawm insoluble anode feem ntau yog cov tshuaj tiv thaiv tawm ntawm cov khoom tsis zoo xws li anions lossis anionic pawg hauv cov electrolyte.
Feem ntau siv anodes rau cobalt electrowinning yog high-purity graphite thiab titanium phaj anodes coated nrog ruthenium. Cov pa roj carbon nyob rau hauv graphite anode yog pulverized thiab tawg thaum lub sij hawm electroplating txheej txheem, ua rau cov cathode muaj carbon. Tam sim no, ruthenium-coated titanium phaj anodes feem ntau yog siv. Rau electroplating ntawm sulfate aqueous daws, lead-silver anodes kuj siv tau
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Chaw nres nkoj:
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Lub Sijhawm Lead:
2-15 hnub tom qab paub meej tias them nyiaj.
Ntim Cov Lus Qhia:
1. Sab hauv: Kraft ntawv, hnab yas, polyethylene foamed ntawv;
2. Sab nraud: ntim: ntoo thawv;
3. Los yog raws li tus neeg yuav tsum tau muaj.
Hu rau
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Nicole
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