Tooj Electrowinning Titanium Anode

Nyob rau hauv tooj liab electrowinning da dej, lub hauv paus ntsiab lus rau xaiv anodes nyob rau hauv sulfate-raws li kev daws teeb meem muaj xws li electrochemical stability, tsis kam mus tshuaj corrosion nyob rau hauv lub acidic ib puag ncig, tsis muaj overpotential rau oxygen evolution, mechanical stability, thiab ib puag ncig kev nyab xeeb. Kev lig kev cai, cov hlau lead-raws li electrodes tau siv hauv tooj liab electrowinning vim lawv cov nqi ua haujlwm. Lawv feem ntau muaj cov hmoov lead (Pb), antimony (Sb), calcium (Ca), thiab lwm yam khoom me me. Txawm li cas los xij, cov hlau lead-raws li electrodes muaj qee qhov tsis zoo xws li tsis muaj corrosion kuj, tsis muaj kev ruaj ntseg, thiab muaj peev xwm ua rau ib puag ncig.

Piv nrog rau cov hlau lead-raws li electrodes, tooj liab electrowinning titanium anode nthuav tawm ntau dua corrosion kuj thiab electrochemical kev ua si. Cov anodes no feem ntau muaj sib xyaw hlau oxide txheej ntawm titanium substrates. Cov oxides siv rau txheej muaj xws li tantalum oxide (Ta₂O₅), iridium oxide (IrO₂), ruthenium dioxide (RuO₂), thiab tin oxide (SnO₂). Ntawm lawv, IrO₂-Tas₂O₅coated titanium electrodes tau raug tshaj tawm tias ua tau zoo heev rau oxygen evolution nyob rau hauv acidic daws vim lawv siab electrocatalytic kev ua si thiab stability.

Ehisen tsim IrO₂-Tas₂O₅coated titanium electrodes siv cov txheej txheem thermal decomposition. Iridium thiab tantalum chloride precursors yog thawj yaj nyob rau hauv ib tug aqueous tov thiab ces txhuam-coated nyob rau hauv ntau txheej ntawm titanium substrates.