Micro-pyrolysis perturbation promotes electrocatalytic activity of tetranuclear nickel clusters

Anchoring Polydopamine on ZnCo2O4 Nanowire To Facilitate Urea Water Electrolysis

“…In mechanistic discussion, The achieved higher electrochemical performance from developed core-shell structured ZnCo 2 O 4 @PDA electrode can be due to the following reasons i) The 3D skeleton structure of ZnCo 2 O 4 tends to facilitate ion transport after PDA shell deposition efficiently; ii) significant increment in active sites, evident from ECSA = 11 cm 2 for ZCOP-1.5 electrode, which is 1.8 times the value of pristine than ZCO electrode, thus highlights the enhanced ECSA; iii) rapid ionic diffusion occurring in the interface of PDA and ZnCo 2 O 4 with retaining structural integrity, as confirmed from lower charge transfer resistance in Nyquist plot; iv) Ni foam as the current collector, also acts as lower resistance pathway for charge transfer, as the core structure of ZnCo 2 O 4 is in-situ grown on the current collector. RhÀ SÀ Co 3 O 4 Ni foam 0.50 M urea 1.28 [37] VÀ Ni 3 N Ni foam 0.50 M urea 1.36 [38] Ni@NCNT GCE 0.50 M urea 1.38 [39] CoMn/CoMn 2 O 4 Ni foam 0.50 M urea 1.32 [40] NiMoO 3 S Ni foam 0.50 M urea 1.34 [41] CoFeCr LDH Ni foam 0.33 M Urea 1.31 [42] NiSe 2 À NiO GCE 0.33 M urea 1.33 [43] MnÀ Ni 3 S 2 Ni foam 0.50 M urea 1.30 [44] CoS 2 /MoS 2 Ni foam 0.50 M urea 1.29 [45] Ni 4 N/Cu 3 N Cu foam 0.50 M urea 1.34 [46] MnO 2 /MnCo 2 O 4 Ni foam 0.50 M urea 1.33 [47] NiÀ BDC GCE 0.33 M urea 1.36 [48] CoS 2 Ti-mesh 0.30 M urea 1.40 [49] SÀ MnO 2 /graphene Ni foam 0.50 M urea 1.33 [50] Ni 4 -350 C paper 0.33 M urea 1.36 [51] C-350 Ni foam 0.50 M urea 1.33 [52] [a] This study.…”

Amorphous conversion in pyrolytic symmetric trinuclear nickel clusters trigger trifunctional electrocatalysts

“…19,20 We have studied the process of coordination of molecular clusters from crystalline to amorphous and later to crystalline during pyrolysis and determined the in situ reconstruction process and information about the amorphous structure. 21 However, previous studies often focused on the stage of high-temperature pyrolysis transformation (above 400 °C), where the structure is easy to characterize and clear in crystalline materials. The transformation mechanism of tandem pyrolysis (low temperature <400 °C) in amorphous materials has not been well studied, and the difficulty of research is greater due to the lower degree of amorphous material.…”

A Comprehensive Pyrolysis Mechanism of Binuclear Chromium-Based Complexes for Superior OER Activity

“…In addition, Schiff base ligands have abundant coordination sites, so they exhibit high compatibility and are easy to coordinate with 3d transition metal ions. Schiff base ligands with a definite structure are able to coordinate with 3d transition metals. , Therefore, Salophen Schiff base ligands were prepared from o -phenylenediamine and salicylaldehyde, and we prepared a binuclear Cr complex [Cr 2 (Salophen) 2 (CH 3 OH) 2 ] ( Cr 2 ) by a hydrothermal method. Then, the Cr 2 O 3 /CrO 3 /CrN@NCs nanoelectrocatalyst was obtained by pyrolysis in a nitrogen atmosphere (Scheme ).…”