Hauv daim ntawv thov roj ntawm tes, Gas Diffusion Layer (GDL) ua haujlwm ntau yam haujlwm tseem ceeb thiab nquag koom ua ib feem ntawm Membrane Electrode Assembly (MEA).
Hauv PEM (Proton Exchange Membrane) electrolyzer, cov roj diffusion txheej (GDL) ua lub luag haujlwm tseem ceeb hauv kev pab txhawb kev txav ntawm cov pa roj reactant mus rau cov txheej txheem catalyst qhov twg cov tshuaj tiv thaiv electrochemical tshwm sim. GDL feem ntau yog tsim los ntawm cov khoom ntxeem tau, uas tso cai rau cov pa roj, xws li hydrogen thiab oxygen, kom ntws los ntawm nws thiab ncav cuag cov txheej txheem catalyst.
GDL ua haujlwm ntau yam tseem ceeb hauv PEM electrolyzer, suav nrog:
Gas faib: GDL pab kom sib npaug faib cov roj reactant thoob plaws ntawm cov txheej txheem catalyst, kom ntseeg tau tias cov tshuaj tiv thaiv electrochemical tuaj yeem tshwm sim sib npaug.
Kev tswj dej: Thaum lub sij hawm electrolysis, dej yog tsim nyob rau hauv lub cathode thiab yuav tsum tau muab tshem tawm kom tsis txhob muaj dej nyab ntawm catalyst txheej. GDL pab thauj cov dej tawm ntawm cov txheej txheem catalyst thiab tawm ntawm lub cell.
Hluav taws xob conductivity: GDL feem ntau yog ua los ntawm cov khoom siv hluav taws xob uas pab hloov hluav taws xob los ntawm cov txheej txheem catalyst mus rau cov khoom siv tam sim no, uas yog qhov tseem ceeb rau cov tshuaj electrochemical tshwm sim.
Zuag qhia tag nrho, cov roj diffusion txheej ua lub luag haujlwm tseem ceeb hauv kev pab txhawb kev ua haujlwm zoo ntawm PEM electrolyzer los ntawm kev ua kom muaj kev thauj cov roj reactant, tswj dej, thiab muab hluav taws xob conductivity.
