Highly efficient overall water splitting performance of gadolinium‐indium‐zinc ternary oxide nanostructured electrocatalyst

Abstract

Summary Metal oxide nanostructures gain specific interest for bifunctional electrocatalytic functions in efficient water splitting reactions. From this perspective, Gd‐In‐Zn‐based ternary oxides were solution processed and studied for oxygen and hydrogen evolution activities under different pH alkaline media. The nanostructure morphology was ascertained using high‐power analytical tools such as scanning and transmission electron microscopes. Signals obtained from X‐ray diffraction data revealed the prevalence of Gd2O3 phase in ternary oxide. Valence state of Gd, In, and Zn ions and their oxide traits was examined using X‐ray photoelectron spectroscopy. Ternary oxides of Gd‐In‐Zn showcased their overall potential for water splitting applications. Overpotential (η) for oxygen and hydrogen (OER/HER) evolution reactions was recorded to be 282 and 271 mV for ±10 mA/cm2. The results demonstrated the processed oxide as an effective OER/HER electrocatalyst with profound Tafel slopes (121/64 mV/dec for OER/HER) and excellent long‐term stability.

SmFeO 3 and SmFe 1‐x Er x O 3 based perovskite nanorods for improved oxygen and hydrogen evolution functions

“…1‐083‐2036 of Sm 2 O 3 ) 23,24 . This must be related to the improved Sm‐O micelle formation during reaction course 25,26 . X‐ray refinement procedures were additionally carried on to study the influence of Er ions over the structural characteristics of processed material.…”

Cathodic activation of synthesized highly defective monoclinic hydroxyl‐functionalizedZrO2nanoparticles for efficient electrochemical production of hydrogen in alkaline media

“…Recently, in our lab, highly stable Eu 2 O 3 /TiO 2 , PdO/TiO 2 , and ZnO/TiO 2 nanocomposites have been synthesized and demonstrated as highly active electrocatalysts for the HER in alkaline electrolytes 24,25 . In very recent studies, nanostructured Gd‐In‐Zn ternary oxide and anionic NiS 2 ‐Ni(OH) 2 nanosheets/nickel foam were reported as efficacious electrocatalysts for alkaline overall water splitting and HER 26,27 …”

“…24,25 In very recent studies, nanostructured Gd-In-Zn ternary oxide and anionic NiS 2 -Ni(OH) 2 nanosheets/nickel foam were reported as efficacious electrocatalysts for alkaline overall water splitting and HER. 26,27 Zirconia (ZrO 2 ) has many advisable physicochemical characteristics that are technologically important. These include outstanding mechanical properties, exceptional thermal stability, increased corrosion resistance, and good chemical stability and thus, has been commonly used in many applications.…”

Construction of hollow structure cobalt iron selenide polyhedrons for efficient hydrogen evolution reaction

“…Non-noble metal catalysts for HER mainly include transition metal oxides, 10,11 carbides, [12][13][14] nitrides, [15][16][17][18] phosphides, [19][20][21][22][23][24] sulfides [25][26][27][28] and selenides [29][30][31] etc. Metal selenides with various morphological peculiarities of crystal have been proved to be a kind of promising HER catalysts.…”