In‐situ formation of an efficient trimetallic (CuZnAg) electrocatalyst for water oxidation

Abstract

Summary There is a need to develop highly efficient electrocatalysts based on non‐noble metals which can be used for water splitting. Thus, to realize an acceptable oxygen evolution reaction (OER) performance, a combination of non‐noble metals was used to improve the architecture and conducive to a facile OER. For this purpose, a binder‐free and non‐noble metal‐based trimetallic (CuZnAg) composite OER a electrocatalyst was grown at the surface of fluorine‐doped tin oxide by a facile one step in‐situ electrodeposition method using chronoamperometry. The formation and performance of the catalyst were ensured from XRD, SEM, EDX, chronoamperometry, and linear scan voltammetry. The trimetallic composite showed good results toward OER in 1 M KOH electrolyte at pH 13 at a current density of 1 mA/cm2 with an overpotential of 303 mV at a scan rate of 10 mV/sec. The results revealed robust electrochemical durability under alkaline conditions and the electrocatalyst holds great promise for OER.

Electrodeposited Trimetallic NiFeW Hydroxide Electrocatalysts for Efficient Water Oxidation

“…Moreover, a CNT‐pasted electrode composite with direct incorporation of trimetallic NiCoFe delivered relatively high OER activity (210 mV@10 mA cm −2 ) [72] . Aside from Ni‐ and Fe‐based catalysts, Cu−Zn−Ag composite electrodeposited on fluorine‐doped tin oxide showed OER activity of 303 mV at 1 mA cm −2 [73] . Other detailed performance parameters, such as overpotential, Tafel slope, and stability of the mentioned electrocatalysts, are given in Table S6.…”

“…[72] Aside from Ni-and Fe-based catalysts, CuÀ ZnÀ Ag composite electrodeposited on fluorine-doped tin oxide showed OER activity of 303 mV at 1 mA cm À 2 . [73] Other detailed performance parameters, such as overpotential, Tafel slope, and stability of the mentioned electrocatalysts, are given in Table S6.…”

Research Progress of High-Entropy Oxides as Oxygen Evolution Reaction Catalysts

“…There are three primary techniques available for producing Tafel slope plots: electrochemical impedance spectroscopy (EIS), a timed-current/timed-point approach, and voltammetry . The most used approach to date is voltammetry, yet it does not produce polarization curves at steady state.…”

“…56 There are three primary techniques available for producing Tafel slope plots: electrochemical impedance spectroscopy (EIS), a timed-current/timed-point approach, and voltammetry. 57 The most used approach to date is voltammetry, yet it does not produce polarization curves at steady state. The catalyst and the solution/electrode have resistance, which prevents the timed-current/timed-spot method from accurately reflecting the catalytic activity of the electrocatalyst, even though it can produce Tafel curves plotted from potential and current density at steady state.…”

Glycine based auto-combustion synthesis of ZnO nanoparticles as electrode material for supercapacitor

“…The economic progress and protection of the environment have the most positive impact on developing the new efficient energy storage devices [4]. Presently a remarkable share of active research is being done to hunt for new efficient energy storage method like hydrogen storage techniques, batteries like Li-S batteries and supercapacitors [4][5][6][7][8]. In searching for new energy-storing devices having features of rapid charge and discharge along with highly prolonged cycle life the supercapacitors are among the best candidates [9].…”