A study on electrode fabrication and operation variables affecting the performance of anion exchange membrane water electrolysis

Green hydrogen from anion exchange membrane water electrolysis: a review of recent developments in critical materials and operating conditions

“…Despite this potential advantage many studies of AEM systems still utilize Ti materials even if working in alkaline media. [113][114][115]…”

“…Several different materials can be used as the substrate. For the anode side Ti paper, 113,[117][118][119] platinized Ti plates, 120 stainless steel felt, 91 Ni foam 54,55,108,109,115,121,122 or even carbon cloth 123 or carbon paper 22,111,112,124 are reported as substrate materials. Ni is the standard material for alkaline water electrolysis while Ti is generally used for PEM water electrolysis.…”

“…57 Indeed, carbon is used as fuel at the anode for molten NaOH carbon air batteries. 57 On the cathode side carbon can be readily used, 54,55,111,113,119,120,123,124,126 as well as Ni 95,101,102,108,115,121,127,128 and Ti. 117,118 The electrode preparation method is predominantly based on spraying a catalyst ink over the activated support surface.…”

“…Box plot showing the 25 th and 75 th percentile, median, average, error bars (showing 10 th and 90 th percentile) values and outlying points was chosen to present the data gathered. Obviously, higher performance of AEM water electrolysers are generally achieved, when PGM catalysts 113,117,118,135 and elevated temperatures 109,113,122 are used. Of course, there can be some exceptions e.g.…”

“…104,109,128 With anion exchange polymer membranes, concentrations can range from 3 to 10 mass%. [99][100][101]113,123,126,144 Generally, electrolysis performance improves with increasing concentration of the hydroxide solution. 121,139,145,146 This improvement is explained by the decrease in the polarization resistance of the both electrodes and cell resistance at the same time.…”