I-fuel cell luhlobo lwesixhobo sokuvelisa umbane, esiguqula amandla eekhemikhali kwi-fuel abe ngamandla ombane nge-redox reaction ye-oxygen okanye ezinye ii-oxidants. I-fuel eqhelekileyo yi-hydrogen, enokuqondwa njenge-reverse reaction ye-electrolysis yamanzi kwi-hydrogen kunye ne-oxygen.
Ngokungafaniyo nerokhethi, i-hydrogen fuel cell ayivelisi amandla e-kinetic ngokusebenzisa i-hydrogen kunye ne-oxygen combustion, kodwa ikhupha amandla asimahla e-Gibbs kwi-hydrogen ngesixhobo se-catalytic. Umgaqo wayo osebenzayo kukuba i-hydrogen inyibilika ibe zii-electron kunye nee-ion ze-hydrogen (ii-protons) nge-catalyst (ngesiqhelo i-platinum) kwi-electrode entle yeseli ye-fuel. Ii-Protons zifikelela kwi-electrode engalunganga nge-proton exchange membrane kwaye zisabela ne-oxygen ukwenza amanzi kunye nobushushu. Ii-electron ezihambelanayo zihamba ukusuka kwi-electrode echanekileyo ukuya kwi-electrode engalunganga ngesekethe yangaphandle ukuze zivelise amandla ombane. Ayinawo umqobo wokusebenza kakuhle kobushushu omalunga nama-40% kwinjini ye-fuel, kwaye ukusebenza kakuhle kwe-hydrogen fuel cell kunokufikelela lula ngaphezu kwama-60%.
Kwiminyaka embalwa eyadlulayo, amandla e-hydrogen abesaziwa “njengohlobo lokugqibela” lwezithuthi ezintsha zamandla ngenxa yeenzuzo zawo zokungangcolisi, amandla avuselelekayo, i-hydrogenation ekhawulezayo, uluhlu olupheleleyo njalo njalo. Nangona kunjalo, ithiyori yobugcisa ye-hydrogen fuel cell igqibelele, kodwa inkqubela phambili kwezoshishino isemva kakhulu. Enye yezona ngxaki zinkulu zokukhuthaza kwayo kukulawula iindleko. Oku akubandakanyi kuphela iindleko zesithuthi ngokwaso, kodwa neendleko zokuvelisa i-hydrogen kunye nokugcina.
Uphuhliso lwezithuthi ze-hydrogen fuel cell luxhomekeke ekwakhiweni kweziseko ze-hydrogen fuel ezifana nokuveliswa kwe-hydrogen, ukugcinwa kwe-hydrogen, ukuthuthwa kwe-hydrogen kunye ne-hydrogenation. Ngokungafaniyo neetram ezicocekileyo, ezinokutshajwa kancinci ekhaya okanye kwinkampani, izithuthi ze-hydrogen zinokutshajwa kuphela kwisikhululo se-hydrogenation, ngoko ke imfuno yesikhululo sokutshaja ingxamisekile ngakumbi. Ngaphandle kwenethiwekhi epheleleyo ye-hydrogenation, uphuhliso lweshishini lezithuthi ze-hydrogen alunakwenzeka.
Ixesha lokuthumela: Epreli-02-2021