GDE ndi chidule cha electrode yofalitsa mpweya, zomwe zikutanthauza electrode yofalitsa mpweya. Pakupanga, chothandizira chimakutidwa ndi gawo lofalitsa mpweya ngati thupi lothandizira, kenako GDE imakanizidwa ndi kutentha mbali zonse ziwiri za nembanemba ya proton m'njira yoti ikanikize kutentha kuti ipange nembanemba ya electrode.
Njirayi ndi yosavuta komanso yokhwima, koma ili ndi zovuta ziwiri. Choyamba, gawo lokonzekera la catalytic ndi lolimba, lomwe limafuna Pt yambiri, ndipo kuchuluka kwa magwiritsidwe ntchito a catalyst ndi kochepa. Chachiwiri, kukhudzana pakati pa gawo lothandizira ndi nembanemba ya proton sikuli pafupi kwambiri, zomwe zimapangitsa kuti mawonekedwe azitha kukana kwambiri, ndipo magwiridwe antchito onse a electrode ya nembanemba si okwera. Chifukwa chake, electrode ya nembanemba ya GDE yachotsedwa kwenikweni.
Mfundo yogwirira ntchito:
Gawo lotchedwa gas distribution layer lili pakati pa electrode. Ndi mphamvu yochepa kwambiri, ma electrolyte amachotsedwa mu dongosololi. Kukana kochepa kwa kayendedwe ka mpweya kumatsimikizira kuti mpweya ukhoza kuyenda momasuka mkati mwa electrode. Pakupanikizika pang'ono kwa mpweya, ma electrolyte omwe ali mu dongosolo la pore amakhala omangika ku gawo logwira ntchito. Gawo la pamwamba palokha lili ndi mabowo ang'onoang'ono kotero kuti mpweya sungadutse kudzera mu ma electrode kulowa mu electrolyte, ngakhale pakakhala mphamvu yayikulu. Electrode iyi imapangidwa ndi kufalikira ndi kupopera kapena kukanikiza kotentha pambuyo pake. Kuti apange ma electrode okhala ndi zigawo zambiri, zinthu zopyapyala zimafalikira mu nkhungu ndikusalala. Kenako, zinthu zina zimagwiritsidwa ntchito m'magawo angapo ndipo kupanikizika kumayikidwa.
Nthawi yotumizira: Feb-27-2023