Los ntawm txoj kev ncaj nraim tam sim no, cov dej molecules tau sib cais los tsim cov pa oxygen thiab hydrogen, uas tau muab cais tawm ntawm cov anode thiab cathode ntawm electrolytic cell, feem. Cov txheej txheem no hu ua dej electrolysis. Dej electrolysis hydrogen tiam feem ntau yog muab cais ua alkaline dej electrolysis (AE), proton exchange membrane (PEM) dej electrolysis, thiab kub kub khoom oxide dej electrolysis nyob ntawm ntau yam ntaub ntawv ntawm electrolyzer diaphragm (SOEC).
Alkaline dej electrolysis hydrogen ntau lawm
Asbestos ua rau feem ntau ntawm cov diaphragm ntawm alkaline dej electrolysis hydrogen tiam electrolyzer, uas cais cov pa roj. Cov hlau alloys, xws li Ni-Mo alloy, thiab lwm yam, uas ua rau cov dej tawg los tsim hydrogen thiab oxygen, ua rau feem ntau ntawm cathode thiab anode. Muaj alkaline dej electrolyzers feem ntau siv KOH kua raws li lawv cov electrolyte; lawv cov zauv feem ntau ntawm 20 feem pua rau 30 feem pua ; lawv cov kev khiav hauj lwm kub yog 7 0 degree rau 80 degree ; lawv cov kev ua haujlwm tam sim no yog nyob ib ncig ntawm 0.25 A / cm2; thiab lawv cov roj siab ntawm 0.1 MPa rau 3.0 MPa. Kev ua tau zoo yog li ntawm 62 feem pua rau 82 feem pua .Lub tshuab tsim cov hydrogen los ntawm alkaline dej electrolysis yog tsim tau zoo thiab muaj cov nqi pib qis thiab kev ua haujlwm, tab sis nws muaj qhov tsis zoo xws li lye poob, corrosion, thiab kev siv zog siab. Alkaline dej electrolysis hydrogen tiam yog lub hom phiaj ntawm ob qho tib si hauv tsev thiab thoob ntiaj teb kev tshawb fawb txog kev tsim cov khoom siv dej electrolyzer.
PEM dej electrolysis hydrogen ntau lawm
Cov khoom tseem ceeb ntawm PEM dej electrolyzer yog proton txauv membrane, cathode thiab anode catalytic txheej, cathode thiab anode gas diffusion txheej, cathode thiab anode kawg daim hlau, thiab lwm yam los ntawm sab hauv mus rau sab nraud. Ntawm lawv, cov txheej txheem diffusion, txheej txheej catalytic thiab proton pauv daim nyias nyias tsim cov membrane electrode, uas yog qhov chaw tseem ceeb rau cov khoom xa mus thiab cov tshuaj tiv thaiv electrochemical ntawm tag nrho cov dej electrolyzer. Kev ua haujlwm thiab kev ua neej nyob ntawm PEM dej electrolyzer yog cuam tshuam ncaj qha los ntawm cov khoom thiab cov qauv ntawm cov membrane electrode.
Qhov txawv
Piv nrog rau alkaline dej electrolysis hydrogen ntau lawm, PEM dej electrolysis hydrogen ntau lawm muaj ntau dua ua hauj lwm tam sim no ceev, zoo dua tag nrho cov efficiency, thiab ntau dua hydrogen gas feem, siab dua roj ntau lawm, ceev ceev dynamic teb, thiab yuav hloov mus rau qhov hloov pauv ntawm lub zog tauj dua tshiab zog. , nws yog suav hais tias yog ib qho kev cog lus dej electrolysis hydrogen ntau lawm technology. Tam sim no, PEM dej electrolysis hydrogen ntau lawm thev naus laus zis tau nthuav tawm thiab maj mam nce hauv thaj chaw xws li cov khoom siv hydrogen nyob rau ntawm chaw nres tsheb hydrogen refueling, electrolysis dej rau hydrogen los ntawm cov khoom siv hluav taws xob txuas ntxiv xws li cua zog, thiab lub zog cia.
