Txheej txheem cej luam ntawm Titanium Anode kev loj hlob
Electrode yog ib qho tseem ceeb hauv kev siv tshuab hluav taws xob. Nws qhov kev ua tau ncaj qha cuam tshuam rau theem ntawm electrolysis efficiency, tus nqi thiab qhov zoo ntawm cov khoom hluav taws xob, thiab cov khoom siv electrode txiav txim qhov kev ua tau zoo ntawm cov electrode. Yog li ntawd, hauv kev tsim cov txheej txheem ntawm kev lag luam electrochemical, Kev txhim kho ntawm cov khoom siv hluav taws xob tshiab nrog kev ua haujlwm zoo tau ib txwm muaj txiaj ntsig los ntawm cov kws tshawb fawb thiab cov kws ua haujlwm los ntawm thoob plaws lub ntiaj teb. Kev txhim kho ntawm cov khoom siv hluav taws xob tau mus los ntawm ntau theem ntawm graphite electrodes, hlau oxide electrodes, txhuas-based alloy electrodes, cov hlau electrodes uas muaj nuj nqi thiab cov titanium-raws cov electrodes. Xyoo 1896, EGAcheson ua tiav cov khoom tsim graphite los ntawm cov khoom siv hluav taws xob pleev thiab siv rau hauv kev tsim cov ntsev dej electrolysis. Txij thaum ntawd los, qhov kev lag luam hauv electrolysis tau nkag mus rau lub sijhawm ntawm graphite electrodes. Ntsev dej electrolysis xav tau cov khoom siv electrode kom muaj qhov ua tau zoo electrocatalytic rau nag lossis daus ntawm chlorine, muaj peev xwm ua tau zoo, thiab muaj peev xwm los tiv thaiv qhov nag lossis daus ntawm oxygen. Thaum cov dej ntsev kom pom tseeb yog qhov siab, cov graphite electrode tuaj yeem ua tau raws li cov kev xav tau saum toj no, tab sis cov graphite anode muaj qhov tsis zoo hauv qab no hauv kev tsim tawm mus ntev: kev ua haujlwm loj thiab kev siv hluav taws xob loj; nrog cov kev nce qib ntawm cov txheej txheem electrochemical cov txheej txheem, cov hluav taws xob poob thiab qhov hloov cov electrode hloov tau tshwm sim, uas ua rau cov khoom siv hluav taws xob tsis ruaj khov, thiab qhov chaw nquag ntawm cov tshuaj chlorine evolution cov nyom yog qhov nyuaj kom tswj tau ruaj khov.
Yuav kom kov yeej cov kev cuam tshuam saum toj no luv luv ntawm graphite electrodes, muaj qhov xav tau ceev dua los hloov cov hlau tsis nrawm ntawm cov khoom siv hluav taws xob nrog cov khoom siv hlau hlau. Hauv qhov xwm txheej no, tib neeg tau tsim cov hlau lead txhuas los ntawm cov hlau hluav taws xob los hloov cov graphite electrodes. Lead-based alloy electrodes muaj qhov zoo ntawm tus nqi qis, yooj yim sib sau, tsis siv neeg kho ntawm cov hlau oxide txawm tias lawv puas, thiab kev ua haujlwm ruaj khov hauv electrolyte. Txawm li cas los xij, nws muaj cov hauv qab no tuag ua tsis tiav hauv kev ua haujlwm ntev: (1) Lub tshuab hluav taws xob muaj qhov hnyav thiab tsis tshua muaj zog, thiab nws muaj kev cuam tshuam thaum lub sijhawm siv, ua rau lub voj voos luv luv thiab txo kev ua haujlwm tam sim no. (2) Lub tshuab hluav taws xob hluav taws xob tsis zoo txaus, thiab lub zog siv hluav taws xob kuj muaj ntau. Yog li, nws yog qhov ceev nrooj kom nrhiav tau cov tshiab electrode los hloov cov hlau-txhuas alloy electrode.
Hauv xyoo 1960, Dutchman Henri Bernard Npias, tom qab ntau xyoo kev ua haujlwm nyuaj, pom ib hom tshiab ntawm anode nrog lub neej ntev, kev ua haujlwm siab electrochemical catalytic, thiab tsis muaj cov pa phem thib ob - cov titanium substrate coated nrog ruthenium oxide-insoluble anode (raug xa mus rau raws li DSA), Thiab ua tiav kev lag luam kev lag luam hauv xyoo 1968. Cov tsos ntawm coated titanium anode kov yeej qhov tsis txaus ntawm graphite thiab cov hlau lead txhuas electrodes, daws cov teeb meem ntau ntsib hauv lub neej txhua hnub thiab kev tsim tawm, thiab zoo heev txhim kho cov tsos ntawm kev lag luam electrolytic. Cov. Nws yog lub npe hu ua chlor-alkali kev lag luam. Lub thev naus laus zis loj. Txij thaum ntawd los, kev txhim kho electrodes tau nkag mus rau hauv lub sijhawm ntawm titanium electrodes.