Synthesis and Composition Study of Electrochemically Deposited Ni-P Coating with Increased Surface Area

Abstract

Nickel phosphides NixPy are a promising family of binary compounds that have shown much promise in various fields of technology, including energy storage, light absorption and heterogeneous catalysis in the reactions of biomass hydrogenation. The performance of NixPy-containing materials depends greatly on their morphology and phase composition and, in turn, on the synthesis technique. In this work, we have employed the electroplating approach to synthesize a Ni-P coating, which was treated with nitric acid in order to develop its surface area and enrich it with phosphorus. We have employed scanning electron microscopy, X-ray diffraction and 31P nuclear magnetic resonance techniques to characterize the particles separated from the coating with ultrasound for the convenience of the study. According to experimental data, the obtained powder contained a mixture of Ni3P and phosphorus oxides, which transformed into nickel phosphide phases richer with phosphorus, such as Ni5P2 and Ni12P5, after treatment at elevated temperatures. Thus, we have demonstrated that electroplating followed by acid treatment is a feasible approach for the synthesis of Ni-P coatings with increased surface area and variable phase composition.

Component Engineering of Multiphase Nickel Sulfide-Based Bifunctional Electrocatalysts for Efficient Overall Water Splitting

“…The platinum (Pt)-group materials have shown highly efficient electrocatalytic performance, but high cost and elemental scarcity significantly hinder their widespread Coatings 2023, 13,1938 2 of 14 application [21][22][23][24]. Recently, first-row transition metal-based catalysts, such as metal oxides [25,26], sulfides [27,28], selenides [29], phosphides [30][31][32][33], and hydroxides [34] of Co, Ni, and Fe, have been intensively investigated due to their high intrinsic activities and low cost. Among these, nickel sulfides with diverse crystalline phases (i.e., nickel subsulfide (Ni 3 S 2 ), nickel sulfide (NiS), and nickel disulfide (NiS 2 ), etc.)…”

The influence of saccharin adsorption on NiFe alloy film growth mechanisms during electrodeposition

“…Metal electrodeposition is one of the methods used to synthesize nano-and microdimensional lms. [26][27][28][29][30][31][32][33][34][35] Electrodeposition is an electrochemical process that allows the preparation of solid deposits of a wide range of thicknesses 27,[36][37][38][39][40][41][42] on the surface of conductive materials. It is a highly commercially relevant process, providing the basis for many industrial applications, such as electrowinning, rening, and metal plating.…”