A Step Forward: Hydrogen Production on Cobalt Molybdenum Sulfide Electrocatalyst in Anion Exchange Membrane Water Electrolyzer

Carlos Inocêncio , Frederic Fouda-Onana (1) , Julie Rousseau , Nadia Guignard , Teko Napporn , Cláudia Morais , Boniface Kokoh

1 DEHT - Département de l'électricité et de l'hydrogène dans les transports

Cobalt molybdenum sulfide (Co0.5Mo0.5Sx) was evaluated, as an alternative cathode catalyst for hydrogen large scale production in an anion exchange membrane water electrolyzer (AEMWE). Performance testing in a Co0.5Mo0.5Sx//Ir single cell fed with 0.1 mol/L KOH exhibited the best activity reported to date for transition metal sulfide cathodes in alkaline media. The aforementioned cell presented good stability during 40 h of operation at 2 V; in addition, it has most of its current density degradation recovered in the beginning of the subsequent 10 h interval.

Domains: Chemical Sciences; Material chemistry

Carlos Inocêncio, Frederic Fouda-Onana, Julie Rousseau, Nadia Guignard, Teko Napporn, et al.. A Step Forward: Hydrogen Production on Cobalt Molybdenum Sulfide Electrocatalyst in Anion Exchange Membrane Water Electrolyzer. ACS Applied Energy Materials, 2022, https://doi.org/10.1021/acsaem.2c02270. ⟨10.1021/acsaem.2c02270⟩. ⟨cea-03822512⟩