A novel Ni–La-Nd-Y flim on Ni foam to enhance hydrogen evolution reaction in alkaline media

RE-doped (RE = La, Ce and Er) Ni2P porous nanostructures as promising electrocatalysts for hydrogen evolution reaction

“…5b). 20,23,[37][38][39][40][41][42][43] Subsequently, Tafel slopes were evaluated to explore the kinetics process of the HER. As displayed in Fig.…”

“…19 More specifically, the introduction of RE elements is conducive to regulating the electron and geometry configuration of the host material and promoting the conductivity of the catalytic system. 20 Besides, RE elements may stabilize the reactive intermediates during the HER catalysis, which further promotes electrocatalytic stability. 21 For example, Qu and co-workers reported that Ce-doped CoP nanowires displayed superb HER properties from experimental and theoretical results.…”

Hidrojen üretimi yoluyla çevre dostu enerji üretiminin incelenmesi

“…Electrocatalysts comprising Pt, Pd, and Ir are more favorable, but the costs are very high. In order to decrease hydrogen production costs, Ni based catalyst have been widely used in electrolysis systems [11][12][13][14][15][16][17][18][19][20]. Solmaz et al [11] investigated the use of a NiZn electrode in an alkaline medium for hydrogen evolution.…”

“…But metals with high catalytic activity can be enhanced by precipitating small amounts of hydrogen gas onto carbon felt [1]. On the other hand, Ni foam electrodes should be considered as one of the low-cost, simple-to-use options for this purpose [13][14][15]. Because they have a large surface as well as the benefit of being light.…”

“…Several modified Ni foam were used as hydrogen evolution catalyst; d, f electron of transition metals and/or rare elements were used to synergize with Ni, Fe, etc. with paired d electrons improving the electrocatalytic performance of nickel foam [13][14][15][16] In order to enhance hydrogen evolution performance, the solvothermal synthesis of Ni0.6Co0.4(HCO3)2 and subsequent electrodeposition of Pt resulted in Pt particles modified NiCo hydrogen carbonate supported on nickel foam (Pt-Ni0.6-Co0.4(HCO3)2/NF) [14]. According to experimental results high exchange current density (4.2 mA cm -2 ) and low Tafel slope (39 mV dec -1 ) values were determined.…”