A fascinating pH independent catalyst for hydrogen evolution reaction: Crystalline bimetallic hcp-Co Rh1- alloy nanofibers driven by thermally induced phase transition from a single phase of CoRh2O4

Iridium‐cobalt alloy nanotubes as a bifunctional electrocatalyst for pH‐universal overall water splitting

“…Since electronegativity of Ir is 2.2 and that of Co is 1.88, Ir attracts electron more strongly than Co, causing 4f peaks of Ir 0.50 Co 0.50 NT to shift negatively. Co 2p peaks at ~778 and ~780 eV correspond to metallic Co and Co 3 O 4 , respectively 27 . The observed Co 2p peaks for Ir 0.50 Co 0.50 NTs suggests that Co exists mainly as metallic Co with slight amount of the oxide at the surface due to the air contact 28,29 …”

Progress in electrocatalytic hydrogen evolution of transition metal alloys: synthesis, structure, and mechanism analysis

“…It is not easy to introduce impurities, and the temperature required is lower than that of the pyrolysis method. The corresponding alloy materials can be obtained by annealing the oxides (NiMoO 4 , 54 CoMoO 4 , 55 NiRh 2 O 4 , 56 CoRh 2 O 4 , 57 etc .) in hydrogen (Fig.…”

Impact of controlling the crystallinity on bifunctional electrocatalytic performances toward methanol oxidation and oxygen reduction in binary Pd–Cr solid solution

“…[17][18][19][20][21] Numerous studies have adopted and demonstrated the effectiveness of atomic mixing with heterogeneous transition metals in catalyst preparation, leading to signicant changes in the physicochemical properties of the metallic components. [22][23][24][25][26] This approach has resulted in a diverse range of structural and crystallographic outcomes, particularly in the case of homogeneous mixtures of multicomponent catalysts, which exhibit modied surface energies. 27,28 One notable consequence of atomic mixing is the alteration of crystallinity, which has been extensively investigated for its impact on the physical and catalytic properties of catalysts due to modied electronic structures.…”