Electrocatalytic activity of layered MAX phases for the hydrogen evolution reaction

The hydrogen evolution reaction (HER) is important for the advancement of next-generation electrochemical energy devices. search an alternative inexpensive catalyst conversion to replace expensive and rare noble metals high priority. There has been a significant push investigate electrocatalysis various layered materials evolution. However, electrocatalytic activity MAX phases remains largely unexplored. Herein, studies (Ti2AlC, Ta2AlC, Ti2SnC, Ti3SiC2, V2AlC, Mo2TiAlC2, Cr2AlC) are conducted. Material characterization carried out understand morphology catalytic activity, respectively. From Tafel slope analysis, it was found that proton adsorption rate-limiting step all studied. Double transition-metal carbides (Mo2TiAlC2) showed better HER than single carbides.