Lub phaj bipolar, tseem hu ua cov phaj collector, yog ib qho tseem ceeb ntawm cov roj cell tam sim no. Nws lub luag haujlwm tseem ceeb yog muab cov pa roj ntws tawm, tiv thaiv hydrogen thiab oxygen hauv lub roj teeb roj chamber los ntawm kev sib tsoo, thiab tsim txoj hauv kev tam sim no ntawm Yin thiab Yang ncej hauv series. Cov khoom siv bipolero nrov tsuas yog hlau, graphite thiab cov hlau sib txuas, cov hlau loj muaj ntau yam kev siv nyiaj ntau, muaj zog , muaj zog corrosion kuj thiab lwm yam zoo heev yam ntxwv.
Tam sim no, cov kev tshawb fawb tau pom tias piv nrog cov hlau tsis muaj steel thiab txhuas, titanium yog qhov tsim nyog dua li cov khoom siv substrate ntawm cov roj cell bipolar daim hlau los ntawm cov khoom ntawm qhov hnyav, lub zog, kev tiv thaiv thiab corrosion kuj tom qab txheej.
Lub peev xwm anode ntawm PEM electrolyzer yog siab dhau lawm, thiab cov graphite phaj lossis stainless hlau phaj feem ntau siv hauv cov roj hlwb yog yooj yim rau corroded thiab degraded. Kev siv cov ntaub ntawv titanium tuaj yeem zam ion leaching los ntawm hlau corrosion, thiab tiv thaiv kom tsis txhob muaj peev xwm ua kom cov catalyst los ntawm kev cuam tshuam. Qhov no kuj yog vim li cas vim li cas lub phaj bipolar ntawm Tuam Tshoj PEM electrolyzer yog ib qho titanium-based bipolar phaj. Txawm li cas los xij, vim tias titanium yog corroded, nws yog ib qho yooj yim los tsim ib txheej passivation ntawm qhov chaw thiab ua rau muaj kev tiv thaiv, yog li nws feem ntau coated nrog cov hlau muaj txiaj ntsig ntawm titanium phaj (xws li platinum, iridium, kub, npib tsib xee, zirconium, thiab lwm yam. , tam sim no feem ntau platinum thiab kub) los tiv thaiv titanium phaj.
Cov txheej txheem stamping yog tsim nyog rau kev npaj cov txheej txheem, uas yog tsim rau cov lag luam loj theem ntawm PEM electrolyzer yav tom ntej. Cov txheej txheem no tuaj yeem txo qhov tuab ntawm cov substrate thiab txo cov nqi tsim khoom ntawm cov phaj bipolar.