High-entropy effect of a metal phosphide on enhanced overall water splitting performance

Abstract

High-entropy materials has gained extensive attention owing to their unique structural characteristics and outstanding properties. The synthesis of high-entropy compounds, especially high-entropy metal phosphides have been seldom reported because of...

Two-Dimensional High-Entropy Metal Phosphorus Trichalcogenides for Enhanced Hydrogen Evolution Reaction

“…Furthermore, the electrochemical impedance spectroscopy (EIS) data were fitted with a Randles circuit (inset in Figures S9 and S10, Supporting Information) to extract the resistance (Figures S9 and S10, Supporting Information). Co 0.6 (VMnNiZn) 0.4 PS 3 NSs showed lower charge transfer resistance ( R ct ) (4.8 Ω), confirming its fast electron transfer characteristic between electrolyte and catalyst . To extract the electrochemical active surface area (ECSA) for the HER process, the double-layer capacitance ( C dl ) was calculated via an analysis of cyclic voltammetry (CV) data (Figure S11, Supporting Information).…”

“…Co 0.6 (VMnNiZn) 0.4 PS 3 NSs showed lower charge transfer resistance (R ct ) (4.8 Ω), confirming its fast electron transfer characteristic between electrolyte and catalyst. 53 To extract the electrochemical active surface area (ECSA) for the HER process, the double-layer capacitance (C dl ) was calculated via an analysis of cyclic voltammetry (CV) data (Figure S11, Supporting Information). The C dl of Co 0.6 (VMnNiZn) 0.4 PS 3 (16.5 mF cm −2 ) NSs is larger than those of CoVMnNiZnPS 3 (10.6 mF cm −2 ), Co 0.4 (VMnNiZn) 0.6 PS 3 (13.0 mF cm −2 ), Co 0.8 (VMnNiZn) 0.2 PS 3 (9.7 mF cm −2 ), and CoPS 3 (7.9 mF cm −2 ) NSs (Figure 4c), demonstrating more catalytic active sites exposed in Co 0.6 (VMnNiZn) 0.4 PS 3 NSs.…”

High entropy metal chalcogenides: synthesis, properties, applications and future directions

“…14 The so-called cocktail effect is in essence a blanket term used to describe any emergent properties which cannot be described by any of the individual components in the HE material, and is potentially the most exciting aspect of exploring these materials and has led to a number of unexpected discoveries. 4 It is important to note that these effects are not limited to HE metal alloys and have also been observed in other HE materials such as HE metal chalcogenides, borides, [15][16][17][18] carbides, [19][20][21][22] nitrides, [22][23][24][25][26] silicides, 27,28 phosphides/phosphates, [29][30][31] and fluorides. [32][33][34] Which have been extensively discussed in a recent review.…”

Electrochemically reconstructed high-entropy amorphous FeCoNiCrVB as a highly active oxygen evolution catalyst

“…Benefiting from the high-entropy effect, the overpotentials of the three ribbons intuitively disclose monotonous enhancement in the OER activity. With increasing number of metal kinds in the catalyst, the additional metal elements could increase the mixing entropy, and tailor the electronic structure, 27,28 thus resulting in the improvement of the catalytic performance. Interestingly, a clear enhancement of the OER activity could be observed upon CV-FeCoNiCrVB.…”